All Wiring Diagrams for GMC Sierra 2002 1500

AIR CONDITIONING

Compressor Wiring Diagram for GMC Sierra 2002 1500

List of elements for Compressor Wiring Diagram for GMC Sierra 2002 1500:

• (diesel)
• (gasoline)
• (right side of accumulator)
• A/c compressor clutch
• A/c compressor clutch relay
• A/c fuse 10a
• A/c high pressure recirculation switch (in a/c muffler hose)
• A/c high pressure switch (rear of compressor)
• A/c request
• A/c switch
• G100 (on left radiator support bracket)
• G102 (silverado/sierra) g105 (others) (4.3l: right front of engine, 4.8l, 5.3l, 6.0l, 8.1l: left side of engine, 6.6l: right side of engine)
• Hot at all times
• Hot in run or start
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Powertrain control module (pcm) (left front of engine compt)
• Press switch a/c high
• Relay ctrl a/c comp
• S101 (forward lamp harn)
• S102 (gasoline) s120 (diesel) (engine harn)
• Underhood fuse block (left side of engine compt, near battery)

Heater Wiring Diagram for GMC Sierra 2002 1500

List of elements for Heater Wiring Diagram for GMC Sierra 2002 1500:

• Blower motor
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Blower motor switch
• D12
• Frt hvac fuse 30a
• G200 (right side of dash, at "a" pillar)
• Hot at all times
• Hot in run
• Htr-a/c fuse 25a
• Interior lights system
• Left i/p fuse block (lower left side of dash)
• Off
• Tan
• Underhood fuse block (left side of engine compt, near battery)

Manual A/C Wiring Diagram, Base for GMC Sierra 2002 1500

List of elements for Manual A/C Wiring Diagram, Base for GMC Sierra 2002 1500:

• (diesel)
• (gasoline)
• A off mtr ctrl
• A/c comp relay ctrl
• A/c compressor clutch
• A/c compressor clutch relay
• A/c fuse 10a
• A/c high pressure recirculation switch (in a/c muffler hose)
• A/c high pressure switch (rear of compressor)
• A/c low pressure switch (right side of accumulator)
• A/c request
• A/c switch
• Air temperature actuator (bottom center of hvac control assembly)
• B mode act ctrl
• Blower motor (under right side of dash)
• Blower motor relay assembly (on hvac module, near blower motor)
• Blower relay
• Body relay block (under left side of dash)
• C ground
• Ctrl recirc door
• D recir act ctrl
• D12
• Defogger system
• E i/p lamp sply
• F temp act ctrl
• Frt hvac fuse 30a
• G act pos sig
• G100 (on left radiator support bracket)
• G102 (4.3l: right front of engine, 4.8l, 5.3l, 6.0l: left side of engine, 8.1l: left side of engine, 6.6l right side of engine)
• G200 (right side of dash, at "a" pillar)
• G203 (on upper left dash at "a" pillar)
• H 5v ref
• High
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 25a
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Interior lights system
• J rear defog rly
• K ign 3 vol
• L a/c request
• Left i/p fuse block (lower left side of dash)
• Low
• M act pos sig
• Mode actuator (left side of hvac module)
• Off
• Powertrain control module (pcm) (left front of engine of engine compt)
• Press sw a/c high
• Recirculation actuator (top of hvac module)
• Red
• S101 (forward lamp harness)
• Sp203
• Tan
• Underhood fuse block (left side of engine compt, near battery)

Manual A/C Wiring Diagram, Up Level for GMC Sierra 2002 1500

List of elements for Manual A/C Wiring Diagram, Up Level for GMC Sierra 2002 1500:

• (diesel)
• (gasoline)
• A off mtr ctrl
• A/c compressor clutch
• A/c compressor clutch relay
• A/c fuse 10a
• A/c high press sw
• A/c high pressure recirculating switch (in a/c muffler hose)
• A/c high pressure switch (rear of compressor)
• A/c low pressure switch (right side of accumulator)
• A/c request
• A/c switch
• Air temperature actuator (bottom center of hvac module)
• B mode act ctrl
• Blower motor (under right side of dash)
• Blower motor resistor assembly (on hvac module, near blower motor)
• Blower relay
• C ground
• D recir act ctrl
• D12
• Defogger system
• E i/p lamp sply
• F temp act ctrl
• Frt hvac fuse 30a
• G act pos sig
• G100 (on left radiator support bracket)
• G102 (silverado/sierra) g105 (others) (4.3l: right front of engine, 4.8l, 5.3l, 6.0l, 8.1l: left side of engine, 6.6l: right side of engine)
• G200 (right side dash, at "a" pillar)
• H 5v ref
• Hot at all times
• Hot in run
• Hot in run or start
• Htr-a/c fuse 25a
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Interior lights system
• J rear defog rly
• K ign 3 vol
• L a/c request
• Left i/p fuse block (lower left side of dash)
• M act pos sig
• Mode actuator (left side of hvac module)
• Off
• Powertrain control module (pcm) (left front of engine compt)
• Recirc door ctrl
• Recirculation actuator (top of hvac module)
• Red
• Relay ctrl a/c comp
• Right i/p fuse block (lower right side of dash)
• S101 (forward lamp harness)
• Tan
• Underhood fuse block (left side of engine compt, near battery)

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams, with Traction Control for GMC Sierra 2002 1500

List of elements for Anti-lock Brake Wiring Diagrams, with Traction Control for GMC Sierra 2002 1500:

• A4 c1
• Abs fuse 60a
• Abs ind
• Body relay block (under left side of dash, near kick panel)
• Brake fluid level sw in
• Brake fluid level switch (on left side of brake fluid reservoir)
• Brake fuse 10a
• Brake in
• Brake ind
• Brake input
• C2 f7
• C8 a
• Data link connector (dlc) (below steering column)
• Del torque
• Delivered torque
• Diesel
• Electronic brake control module (ebcm) (on left side of inner frame)
• G104 (left rear of engine block)
• G106 (right front of engine)
• G110 (left front body mount)
• G203 (upper left side of dash, at "a" pillar)
• Gas
• Ground
• Ground distribution system
• Hot at all times
• Hot in run
• Hot in run or start
• Ign 1 fuse 10a
• Ignition
• Illum lamp
• Instrument cluster
• Interior lights system
• Left front sensor (+)
• Left front sensor (-)
• Left front wheel speed sensor
• Left i/p fuse block (on lower left side of dash)
• Logic
• Low traction indicator
• Motor & solenoid pwr
• Nca
• Pnk
• Power distribution system
• Powertrain control module (pcm) (on left front of engine compt)
• Red
• Req torque
• Requested torque
• Right front sensor (+)
• Right front sensor (-)
• Right front wheel speed sensor
• S102
• S120
• Serial data
• Service trac cntl sig
• Sp203
• Splice pack sp203 (on top left side of dash, near "a" pillar)
• Stoplamp switch (on top of brake pedal bracket)
• Tan
• Trac cntl active sig
• Trac sw input
• Traction control switch
• Traction off indicator
• Underhood fuse block (at left side of engine compt, near battery)
• Vehicle speed sensor (vss) (4wd: on top left side of transfer case) (2wd: on left rear side of transmission)
• Vehicle speed sensor adapter (4wd only) (on left side of trans)
• Vss high
• Vss input
• Vss low
• Vss out

Anti-lock Brake Wiring Diagrams, without Traction Control for GMC Sierra 2002 1500

List of elements for Anti-lock Brake Wiring Diagrams, without Traction Control for GMC Sierra 2002 1500:

• A4 c1
• Abs fuse 60a
• Abs ind
• Body relay block (under left side of dash, near kick panel)
• Brake fluid level sw in
• Brake fluid level switch (on left side of brake fluid reservoir)
• Brake fuse 10a
• Brake ind
• Brake input
• C8 a
• Clutch start switch (top of clutch clutch assy)
• Cpp sw sig
• Data link connector (dlc) (below steering column)
• Diesel
• Electronic brake control module (ebcm) (on left side of inner frame)
• Engine controls system
• F6 c3
• F7 c2
• Front axle act/sw input
• Front axle actuator/ switch (on axle housing)
• G104 (left rear of engine block)
• G106 (right front of engine)
• G110 (left front body mount)
• Gas
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Ign 1 fuse 10a
• Ignition
• Instrument cluster
• Left front sensor (+)
• Left front sensor (-)
• Left front wheel speed sensor
• Left i/p fuse block (on lower left side of dash)
• Logic
• M/t only
• Motor & solenoid pwr
• Nca
• Pnk
• Powertrain control module (pcm) (on left front of engine compt)
• Red
• Right front sensor (+)
• Right front sensor (-)
• Right front wheel speed sensor
• S102
• S120
• Serial data
• Splice pack sp205 (on left side of dash, behind headlamp switch)
• Stopla,mp switch (on top of brake pedal bracket)
• Tan
• Transfer case shift control module (left side of dash, behind headlamp switch)
• Transmissions system
• Underhood fuse block (at left side of engine compt, near battery)
• Vehicle speed sensor (vss) (4wd: on top left side of transfer case) (2wd: on left rear side of transmission)
• Vehicle speed sensor adapter (4wd only) (on left side of trans)
• Vss high
• Vss input
• Vss low
• Vss output

ANTI-THEFT

Forced Entry Wiring Diagram for GMC Sierra 2002 1500

List of elements for Forced Entry Wiring Diagram for GMC Sierra 2002 1500:

• (left side of dash, below steering column)
• (not used)
• A11
• All times
• Body control module
• Door unlock
• Driver mini-wedge door jamb switch
• Driver window/door lock switch
• Ex lights ctrl
• Exterior lights system
• F10
• Front passenger mini-wedge door jamb switch
• Front passenger window/door lock switch
• G200 (upper right kick panel)
• G203 (upper left kick panel)
• Ground
• Headlights ctrl
• Headlights system
• Horn rly ctrl
• Horns system
• Hot at
• Remote keyless entry system
• Right i/p fuse block
• Right i/p fuse block (lower right side of dash)
• Sp203
• Splice pack sp203
• Tbc fuse 10a
• Underhood fuse block

Passlock Wiring Diagram for GMC Sierra 2002 1500

List of elements for Passlock Wiring Diagram for GMC Sierra 2002 1500:

• A12
• Battery
• Body control module (lower left side of dash below steering column)
• Body relay block (under left side of dash)
• Connector (below steering column)
• Cruise fuse 10a
• Data
• Data link
• F10
• G203 (upper left kick panel)
• Grd
• Hot at all times
• Hot in run
• Hot in run or start
• I/p left fuse block
• Ign 1 fuse 10a
• Ign pwr
• Key
• Lock cylinder
• Magnet
• Passlock sensor (internal to steering column)
• Pnk
• Powertrain control module (on left front of engine compt)
• Security sensor
• Sensor data
• Sensor pwr
• Sensor ret
• Sp203
• Splice pack sp205 (upper left kick panel)
• Tamper sensor
• Tbc fuse 10a
• Underhood fuse block

BODY COMPUTER

Body Computer Wiring Diagrams for GMC Sierra 2002 1500

List of elements for Body Computer Wiring Diagrams for GMC Sierra 2002 1500:

• 12v ref
• 5v ref
• A10
• A11
• A12
• Ambient light sen sig
• Ambient light sensor (top center of dash)
• Anti-theft system
• B10
• B11
• B12
• Battery
• Body control module (on lower left side of dash, below steering column)
• Body relay block (near left kick panel)
• Body relay block (under left side of dash)
• Cargo lp sw input
• Class 2 data
• Computer data lines system
• Courtesy lamp pwr
• Cruise fuse 10a
• Ctsy lp rly ctrl
• Door latch sw sig
• Door lock ctrl
• Door locks system
• Door unlock ctrl
• Driver door key sw sig
• Drl rly coil
• Engine controls system
• Exterior courtesy lps rly ctrl
• Exterior lights system
• F10
• Flash to pass sw sig
• Fog lp rly ctrl
• Front fog lp sw
• G203 (upper left kick panel)
• Ground
• Headlamp sw input
• Headlights system
• High beam input
• Horn rly ctrl
• Horns system
• Hot at all times
• Hot in run
• Hot in run & start
• Ign 1
• Ign 1 fuse 10a
• Ign 3
• Ignition key alarm switch
• Inadvertent pwr rly ctrl
• Inst panel lp pwr
• Int lp defeat sw sig
• Interior lamp ctrl
• Interior lights system
• Interior park lp pwr
• Key in ign sw sig
• Led dim sig
• Left i/p fuse block
• Lf dr open sw sig
• Lt ft dr unlk rly ctrl
• Lt seat belt sw
• Lt turn sig lamp pwr
• Nca
• Park brake switch
• Pk lp rly ctrl
• Pnk
• Power distribution system
• Power distribution system (rap)
• Prk bk sw sig
• Rap relay ctrl
• Rt turn sig lamp pwr
• Security system sen sig
• Sensor low ref
• Serial data
• Sp203
• Tan
• Tbc fuse 10a
• Tow/haul sw sig
• Tow/haul switch
• Underhood junction block
• Vss
• Warning system

COMPUTER DATA LINES

Computer Data Lines for GMC Sierra 2002 1500

List of elements for Computer Data Lines for GMC Sierra 2002 1500:

• (diesel)
• (gas)
• (not used)
• (under driver's seat) inflatable restraint sensing & diagnostic module
• A12
• Body control module (on lower left side of dash, below steering column)
• Body relay block (under left side of dash,
• Body relay block (under left side of dash, near kick panel)
• C11
• Cigar fuse 15a
• Data link connector (dlc) (under left side of dash, below steering column)
• Driver information center (dic)
• Electronic brake control module (ebcm) (on left side of inner frame)
• G103 (right rear of engine)
• G105 (left front eng block)
• G203 (upper left kick panel)
• Hot at all times
• Hvac control module (behind center of dash)
• Instrument panel cluster (ipc)
• Memory seat module (undersode of driver seat)
• Near kick panel)
• Powertrain control module (pcm) (on left front of engine compt)
• Rear wheel steering control module (at left rear of vehicle, near spare tire bracket)
• Sp205 (left side of dash)
• Splice pack sp203
• Transfer case shift control module (behind headlamp switch)
• Transmission control module (at left front of eng compt)
• Underhood fuse block (at left side of eng compt, c2 near battery)
• Underhood fuse block (at left side of engine compt, near battery)
• Vehicle interface unit (behind right side of dash)

CRUISE CONTROL

4.3L

4.3L VIN W, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500:

• 5v ref
• A10
• A12
• A13
• A14
• A15
• Acceleration pedal position sensor (behind accelerator pedal)
• App sensor 1 sig
• App sensor 2 sig
• App sensor 3 sig
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise on sw sig
• D11
• Etc fuse 15a
• Exterior lights system
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• Ign volt
• Left i/p fuse block (on lower left side of dash)
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• S103
• Serial data
• Set/coast
• Set/coast sig
• Stop lps fuse 20a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Throttle actuator control module (right rear of engine compt, near underhood fuse block)
• Throttle actuator control motor (on throttle body)
• Throttle position sensor (on throttle body assembly)
• Tp sensor 1 sig
• Tp sensor 2 sig
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

4.3L VIN W, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500:

• (a/t)
• (m/t)
• A/t
• A12
• A13
• A14
• A15
• Body relay block (under left side of dash)
• Brake fuse 10a
• Clutch start switch (top of clutch pedal)
• Clutch sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise control on/off switch
• Cruise engage in
• Cruise engage out
• Cruise fuse 10a
• Cruise on input
• D11
• Exterior lights system
• F11
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Ignition
• Instrument cluster system
• Left i/p fuse block (on lower left side of dash)
• M/t
• Nca
• Off
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• Set/coast
• Set/coast sig
• Sound systems
• Speed sensor input
• Speed sensor out
• Stop lps fuse 20a
• Stoplamp sw input
• Stoplamp switch (top of brake pedal)
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

4.8L

4.8L VIN V, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500:

• 5v ref
• A10
• A12
• A13
• A14
• A15
• Acceleration pedal position sensor (behind accelerator pedal)
• App sensor 1 sig
• App sensor 2 sig
• App sensor 3 sig
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise on sw sig
• D11
• Etc fuse 15a
• Exterior lights system
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• Ign volt
• Left i/p fuse block (on lower left side of dash)
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• S103
• Serial data
• Set/coast
• Set/coast sig
• Stop lps fuse 20a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Throttle actuator control module (right rear of engine compt, near underhood fuse block)
• Throttle actuator control motor (on throttle body)
• Throttle position sensor (on throttle body assembly)
• Tp sensor 1 sig
• Tp sensor 2 sig
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

4.8L VIN V, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500:

• (a/t)
• (m/t)
• A/t
• A12
• A13
• A14
• A15
• Body relay block (under left side of dash)
• Brake fuse 10a
• Clutch start switch (top of clutch pedal)
• Clutch sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise control on/off switch
• Cruise engage in
• Cruise engage out
• Cruise fuse 10a
• Cruise on input
• D11
• Exterior lights system
• F11
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Ignition
• Instrument cluster system
• Left i/p fuse block (on lower left side of dash)
• M/t
• Nca
• Off
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• Set/coast
• Set/coast sig
• Sound systems
• Speed sensor input
• Speed sensor out
• Stop lps fuse 20a
• Stoplamp sw input
• Stoplamp switch (top of brake pedal)
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

5.3L

5.3L VIN T, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500:

• 5v ref
• A10
• A12
• A13
• A14
• A15
• Acceleration pedal position sensor (behind accelerator pedal)
• App sensor 1 sig
• App sensor 2 sig
• App sensor 3 sig
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise on sw sig
• D11
• Etc fuse 15a
• Exterior lights system
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• Ign volt
• Left i/p fuse block (on lower left side of dash)
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• S103
• Serial data
• Set/coast
• Set/coast sig
• Stop lps fuse 20a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Throttle actuator control module (right rear of engine compt, near underhood fuse block)
• Throttle actuator control motor (on throttle body)
• Throttle position sensor (on throttle body assembly)
• Tp sensor 1 sig
• Tp sensor 2 sig
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

5.3L VIN T, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500:

• (a/t)
• (m/t)
• A/t
• A12
• A13
• A14
• A15
• Body relay block (under left side of dash)
• Brake fuse 10a
• Clutch start switch (top of clutch pedal)
• Clutch sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise control on/off switch
• Cruise engage in
• Cruise engage out
• Cruise fuse 10a
• Cruise on input
• D11
• Exterior lights system
• F11
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Ignition
• Instrument cluster system
• Left i/p fuse block (on lower left side of dash)
• M/t
• Nca
• Off
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• Set/coast
• Set/coast sig
• Sound systems
• Speed sensor input
• Speed sensor out
• Stop lps fuse 20a
• Stoplamp sw input
• Stoplamp switch (top of brake pedal)
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

6.0L

6.0L VIN U, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 6.0L VIN U, Cruise Control Wiring Diagram, with Electronic Throttle System for GMC Sierra 2002 1500:

• 5v ref
• A10
• A12
• A13
• A14
• A15
• Acceleration pedal position sensor (behind accelerator pedal)
• App sensor 1 sig
• App sensor 2 sig
• App sensor 3 sig
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise on sw sig
• D11
• Etc fuse 15a
• Exterior lights system
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• Ign volt
• Left i/p fuse block (on lower left side of dash)
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• S103
• Serial data
• Set/coast
• Set/coast sig
• Stop lps fuse 20a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Throttle actuator control module (right rear of engine compt, near underhood fuse block)
• Throttle actuator control motor (on throttle body)
• Throttle position sensor (on throttle body assembly)
• Tp sensor 1 sig
• Tp sensor 2 sig
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

6.0L VIN U, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500

List of elements for 6.0L VIN U, Cruise Control Wiring Diagram, without Electronic Throttle System for GMC Sierra 2002 1500:

• (a/t)
• (m/t)
• A/t
• A12
• A13
• A14
• A15
• Body relay block (under left side of dash)
• Brake fuse 10a
• Clutch start switch (top of clutch pedal)
• Clutch sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise control on/off switch
• Cruise engage in
• Cruise engage out
• Cruise fuse 10a
• Cruise on input
• D11
• Exterior lights system
• F11
• F12
• G103 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Ignition
• Instrument cluster system
• Left i/p fuse block (on lower left side of dash)
• M/t
• Nca
• Off
• Powertrain control module (left front of engine compt)
• Resume/accel
• Resume/accel sig
• Set/coast
• Set/coast sig
• Sound systems
• Speed sensor input
• Speed sensor out
• Stop lps fuse 20a
• Stoplamp sw input
• Stoplamp switch (top of brake pedal)
• Underhood fuse block (near battery)
• Veh stop fuse 10a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vehicle speed sensor adapter (4wd) (on left side of transmission)
• Vss high
• Vss low

DEFOGGERS

Heated Mirrors Wiring Diagram for GMC Sierra 2002 1500

List of elements for Heated Mirrors Wiring Diagram for GMC Sierra 2002 1500:

• (auto a/c)
• (auto a/c) (man a/c)
• (man a/c)
• A9 f3
• Body relay bock (left side of dash)
• C c1
• C c7
• C1 c1
• C10
• C6 k c1
• D9 c1
• Defog request
• Defogger switch/ timer
• Driver outside rearview mirror
• Driver window/ door lock switch
• Except crew cab
• F c5
• F3 c1
• G200 (right "a" pillar)
• G200 (upper right kick panel)
• G203 (left "a" pillar)
• G203 (upper left kick panel)
• Ground
• Ground distribution system
• Hot at all times
• Hot in run
• Hot in run & start
• Htd mir fuse 10a
• Hvac 1 fuse 10a
• Hvac control module (in center of dash, under radio)
• Ign 3
• Ign e fuse 10a
• Ind
• Left i/p fuse block (left side of dash)
• M c1
• Nca
• Passenger outside rearview mirror
• Passenger window/ door lock switch
• Relay ctrl
• Right i/p fuse block (lower right side of dash)
• Right i/p fuse block (on lower right side of dash)
• Rr defog fuse
• Rr defog relay
• Splice pack sp203
• Underhood fuse block (at left side of engine compartment, near battery)
• Uplevel & crew cab

Rear Defogger Wiring Diagram for GMC Sierra 2002 1500

List of elements for Rear Defogger Wiring Diagram for GMC Sierra 2002 1500:

• (auto a/c)
• (auto a/c) (man a/c)
• (man a/c)
• (pickup:right "b" pillar)
• A c1
• A c2
• A9 f3
• Body relay bock (left side of dash)
• C c1
• C1 c1
• C10
• C6 k c1
• D14 j
• D9 c1
• Except crew cab
• F3 c1
• G200 (right "a" pillar)
• G203 (left "a" pillar)
• G306 (pickup) g390 (crewcab)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• Htd mir fuse
• Hvac 1 fuse 10a
• Hvac control module (in center of dash, under radio)
• Ign
• Ign e fuse 10a
• Ind
• Left i/p fuse block (left side of dash)
• Rear window defogger grid
• Relay ctrl
• Right i/p fuse block (lower right side of dash)
• Rr defog fuse 30a
• Rr defog relay
• Splice pack sp203
• Underhood fuse block (at left side of engine compartment, near battery)
• Uplevel & crew cab

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for GMC Sierra 2002 1500

List of elements for Electronic Power Steering Wiring Diagram for GMC Sierra 2002 1500:

• 12v ref
• 5 volt ref
• B10
• Bat
• Battery
• Combination yaw rate sensor/lateral accelerometer sensor (under passenger seat)
• Computer data lines system
• G203
• Ground distribution system
• Hall a sig
• Hall b sig
• Hall c sig
• Hot at all times
• Hot in run
• Hot in run or start
• Ign 3 fuse 10a
• Ign 3 volt
• Ind sply volt
• Instrument cluster system
• Interior lights system
• Lat accel sig
• Left i/p fuse block
• Mega fuse 125a
• Mod gnd
• Mode sw sig
• Phase a ctrl
• Phase a sig
• Phase b ctrl
• Phase b sig
• Phase c ctrl
• Pos 1 sig
• Pos 2 sig
• Power distribution system
• Pulse sig
• Rear wheel position sensor (left rear of vehicle)
• Rear wheel steering control module (near spare tire bracket)
• Rear wheel steering mode select switch
• Red
• Rly gnd
• Rly volt
• Sens gnd
• Sens ret
• Sens sig
• Seo 1 fuse 15a
• Serial data
• Splice pack (left "a" pillar)
• Sply volt
• Steering gear motor assembly (near spare tire bracket)
• Steering wheel speed/ position sensor (on steering column)
• Tan
• Tan c
• Underhood fuse block
• Underhood fuse holder
• Vss
• Yaw sens sig

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for GMC Sierra 2002 1500

List of elements for Electronic Suspension Wiring Diagram for GMC Sierra 2002 1500:

• Body relay block (under left side of dash, near kick panel)
• Dimming control
• E11
• Firm
• G202 (upper left kick panel)
• G302 (on left body mount)
• G401 (on spare tire hoist bracket)
• Hot in run or start
• Illum
• Indicator
• Interior lights system
• Left front shock absorber solenoid
• Left i/p fuse block (on lower left side of dash)
• Left rear shock absorber solenoid
• Off
• Pnk
• Right front shock absorber solenoid
• Right rear shock absorber solenoid
• Selectable ride switch
• Seo ign fuse 10a
• Sp203
• Underhood fuse block (near battery)

ENGINE PERFORMANCE

4.3L

4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (bottom front of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Knock sens
• Left i/p fuse block
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• S103
• Sens gnd
• Sens rtn
• Sp205 (behind headlamp switch)
• Tan
• Under- hood junction block

4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for GMC Sierra 2002 1500:

• (left rear of engine)
• (left rear of engine) g103
• (not used)
• Air maxi fuse 30a j7
• Ecm b fuse 20a
• Engine coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump relay
• Fuel pump/ level sensor (in fuel tank)
• G102 (right front of engine)
• G103 (left rear of engine)
• G104
• G105 (left front of engine)
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Ign e fuse 10a c2
• Knock sensor (rear of engine block)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• S110
• Secondary air injection reaction pump (right rear of engine compt)
• Secondary air injection reaction relay (right rear of engine compartment)
• Secondary air injection reaction solenoid (right rear of engine compt)
• Tan
• Throttle position sensor (on throttle body assy)
• Under- hood junction block

4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• B red
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (in distributor)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• G103 (right rear of engine)
• Gnd
• Hot in run & start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• Mass airflow sensor (in air intake duct)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Pnk d
• Red
• Red e
• Red/
• Rev
• S103
• Signal
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tan b
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood junction block
• Vehicle speed sensor (left rear of transmission)

4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for GMC Sierra 2002 1500:

• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system (speed signal)
• Coil driver
• Coil wire
• Cruise control system
• Cruise eng
• Cyc sw in
• Distributor
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle actuator (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G102 (right front of engine)
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Ic timing ctrl
• Idle air control valve (top of throttle body)
• Ign
• Ign feed
• Ign1 fuse 10a
• Ignition coil
• Ignition control module (right rear of engine)
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Rpm out
• S103
• Sens gnd
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Timing
• Tp sig
• Trans rng a
• Transfer case shift control switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out

4.3L VIN X, Engine Performance Wiring Diagrams (1 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagrams (1 of 4) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Knock sens
• Left i/p fuse block
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• S103
• Sens gnd
• Sens rtn
• Sp205 (behind headlamp switch)
• Tan
• Under- hood junction block

4.3L VIN X, Engine Performance Wiring Diagrams (2 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagrams (2 of 4) for GMC Sierra 2002 1500:

• (in eng harn)
• (left rear of engine)
• (left rear of engine) g103
• (not used)
• Air maxi fuse 30a j7
• Ecm b fuse 20a
• Engine coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump relay
• Fuel pump/ level sensor (in fuel tank)
• G102 (right front of engine)
• G103 (left rear of engine)
• G104
• G105 (left front of engine)
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Hot in run & start
• Ign e fuse 10a c2
• Knock sensor (rear of engine block)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• S110
• S114
• Secondary air injection reaction pump (right rear of engine compt)
• Secondary air injection reaction relay (right rear of engine compartment)
• Secondary air injection reaction solenoid (right rear of engine compt)
• Tan
• Throttle position sensor (on throttle body assy)
• Under- hood junction block

4.3L VIN X, Engine Performance Wiring Diagrams (3 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagrams (3 of 4) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• B red
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (in distributor)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• G103 (right rear of engine)
• Gnd
• Hot in run & start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• Mass airflow sensor (in air intake duct)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Pnk d
• Red
• Red e
• Red/
• Rev
• S103
• Signal
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tan b
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood junction block
• Vehicle speed sensor (left rear of transmission)

4.3L VIN X, Engine Performance Wiring Diagrams (4 of 4) for GMC Sierra 2002 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagrams (4 of 4) for GMC Sierra 2002 1500:

• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system (speed signal)
• Coil driver
• Coil wire
• Cruise control system
• Cruise eng
• Cyc sw in
• Distributor
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle actuator (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G102 (right front of engine)
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Ho2s lo
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Ic timing ctrl
• Idle air control valve (top of throttle body)
• Ign
• Ign feed
• Ign1 fuse 10a
• Ignition coil
• Ignition control module (right rear of engine)
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk a
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Rpm out
• S103
• Sens gnd
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Timing
• Tp sig
• Trans rng a
• Transfer case shift control switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out

4.8L

4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Anti-lock brake system
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuel comp sig
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inj7
• Inj8
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Req torque
• S103
• Sens gnd
• Sens rtn
• Serial data
• Sp205 (behind headlamp switch)
• Tan
• Theft deterrent control module
• Underhood fuse block
• W/ remote function actuator
• W/o remote function actuator

4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500:

• (left rear of engine)
• (left rear of engine) g104
• (not used)
• (right front of engine)
• Coolant level switch (in coolant reservoir)
• Ecm b fuse 20a
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender (in fuel tank)
• Fuel pump relay
• G103 (left rear of engine)
• G104
• G105
• G105 (right front of engine)
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe after converter)
• Hot at all times
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S102
• S103
• S104
• Tan
• Throttle position sensor (w/o electronic throttle control) (on throttle body assy)
• Under- hood fuse block

4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body relay block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent solenoid (right front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot in run
• Hot in run & start
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Red
• Red e
• Red/
• Rev
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor adapter (4wd) (left side of trans)

4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control) (behind accelerator pedal)
• Act cntrl
• App sens 1
• App sens 2
• App sens 3
• C11
• Cruise control system
• Cruise req
• D11
• Data
• Ecm1 fuse 10a
• Ect fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (left rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature/ mass airflow sensor (in air intake duct)
• Left i/p fuse block
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 2 grd
• Sens 3 grd
• Sens grd
• Signal
• Stp lp in
• Tan
• Tan b
• Throttle actuator control (tac) module (w/ electronic throttle control) (in left rear of engine compt)
• Throttle actuator control motor (w/ electronic throttle control) (on throttle body)
• Throttle position sensor (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 10a

4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500:

• (in engine harness)
• (left rear of engine) g104
• (right front of engine) g105
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Idle air control valve (top of throttle body)
• Ign
• Ign ctrl
• Ign feed
• Ign1 fuse 10a
• Ignition coils
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Sens gnd
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Tp sig
• Trans rng a
• Transfer case shift control module (behind headlight switch)
• Underhood fuse block
• Vss high
• Vss low
• Vss out

4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Anti-lock brake system
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuel comp sig
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inj7
• Inj8
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Req torque
• S103
• Sens gnd
• Sens rtn
• Serial data
• Sp205 (behind headlamp switch)
• Tan
• Theft deterrent control module
• Under- hood fuse block
• W/ remote function actuator
• W/o remote function actuator

4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500:

• (eng harness) s114
• (left rear of engine)
• (left rear of engine) g104
• (not used)
• (right front of engine)
• Coolant level switch (in coolant reservoir)
• Ecm b fuse 20a
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (in fuel tank)
• Fuel pump relay
• G103 (left rear of engine)
• G104
• G104 (left rear of engine)
• G105
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe after converter)
• Hot at all times
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S102
• S103
• S104
• S113 (eng harness)
• Tan
• Throttle position sensor (w/o electronic throttle control) (on throttle body assy)
• Under- hood fuse block

4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body relay block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent solenoid (right front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot in run
• Hot in run & start
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Red
• Red e
• Red/
• Rev
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor adapter (4wd) (left side of trans) c2

4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control) (behind accelerator pedal)
• Act cntrl
• App sens 1
• App sens 2
• App sens 3
• C11
• Cruise control system
• Cruise req
• D11
• Data
• Ecm1 fuse 10a
• Ect fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (left rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature/ mass airflow sensor (in air induction duct)
• Left i/p fuse block
• Pnk
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 2 grd
• Sens 3 grd
• Sens grd
• Signal
• Stp lp in
• Tan
• Throttle actuator control (tac) module (w/ electronic throttle control) (in left rear of engine compt)
• Throttle actuator control motor (w/ electronic throttle control) (on throttle body)
• Throttle position sensor (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Under- hood fuse block
• Underhood fuse block
• Veh stop fuse 10a

4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500:

• (in engine harness)
• (left rear of engine) g104
• (right front of engine) g105
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Idle air control valve (top of throttle body)
• Ign
• Ign ctrl
• Ign feed
• Ign1 fuse 10a
• Ignition coils
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Sens gnd
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Tp sig
• Trans rng a
• Transfer case shift control module (behind headlight switch)
• Underhood fuse block
• Vss high
• Vss low
• Vss out

5.3L

5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Anti-lock brake system
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuel comp sig
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inj7
• Inj8
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Req torque
• S103
• Sens gnd
• Sens rtn
• Serial data
• Sp205 (behind headlamp switch)
• Tan
• Theft deterrent control module
• Underhood fuse block
• W/ remote function actuator
• W/o remote function actuator

5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500:

• (left rear of engine)
• (left rear of engine) g104
• (not used)
• (right front of engine)
• Coolant level switch (in coolant reservoir)
• Ecm b fuse 20a
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender (in fuel tank)
• Fuel pump relay
• G103 (left rear of engine)
• G104
• G105
• G105 (right front of engine)
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe after converter)
• Hot at all times
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S102
• S103
• S104
• Tan
• Throttle position sensor (w/o electronic throttle control) (on throttle body assy)
• Under- hood fuse block

5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body relay block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent solenoid (right front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot in run
• Hot in run & start
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Red
• Red e
• Red/
• Rev
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor adapter (4wd) (left side of trans)

5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control) (behind accelerator pedal)
• Act cntrl
• App sens 1
• App sens 2
• App sens 3
• C11
• Cruise control system
• Cruise req
• D11
• Data
• Ecm1 fuse 10a
• Ect fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (left rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature/ mass airflow sensor (in air intake duct)
• Left i/p fuse block
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 2 grd
• Sens 3 grd
• Sens grd
• Signal
• Stp lp in
• Tan
• Tan b
• Throttle actuator control (tac) module (w/ electronic throttle control) (in left rear of engine compt)
• Throttle actuator control motor (w/ electronic throttle control) (on throttle body)
• Throttle position sensor (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Underhood fuse block
• Veh stop fuse 10a

5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Case Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500:

• (in engine harness)
• (left rear of engine) g104
• (right front of engine) g105
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Idle air control valve (top of throttle body)
• Ign
• Ign ctrl
• Ign feed
• Ign1 fuse 10a
• Ignition coils
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Sens gnd
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Tp sig
• Trans rng a
• Transfer case shift control module (behind headlight switch)
• Underhood fuse block
• Vss high
• Vss low
• Vss out

5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (1 of 5) for GMC Sierra 2002 1500:

• (below steering column) data link connector
• (lower right rear of engine) crankshaft position sensor
• +5v
• 3-2 ss
• Anti-lock brake system
• Body control module (below steering column)
• Brk sw
• C10
• C11
• C12
• Ckp
• Cls 2 data
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuel comp sig
• G103 (left rear of engine)
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in run & start
• Ign
• Ign 0 fuse 10a
• Inj1
• Inj2
• Inj3
• Inj4
• Inj5
• Inj6
• Inj7
• Inj8
• Inja fuse 15a
• Injb fuse 15a
• Injectors
• Ks signal
• Left i/p fuse block
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev
• Pnk
• Pnk b
• Powertrain control module (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Req torque
• S103
• Sens gnd
• Sens rtn
• Serial data
• Sp205 (behind headlamp switch)
• Tan
• Theft deterrent control module
• Under- hood fuse block
• W/ remote function actuator
• W/o remote function actuator

5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (2 of 5) for GMC Sierra 2002 1500:

• (eng harness) s114
• (left rear of engine)
• (left rear of engine) g104
• (not used)
• (right front of engine)
• Coolant level switch (in coolant reservoir)
• Ecm b fuse 20a
• Engine coolant temperature sensor (left front of cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (in fuel tank)
• Fuel pump relay
• G103 (left rear of engine)
• G104
• G104 (left rear of engine)
• G105
• G403 (left frame body mount bracket)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe after converter)
• Hot at all times
• Knock sensor (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S102
• S103
• S104
• S113 (eng harness)
• Tan
• Throttle position sensor (w/o electronic throttle control) (on throttle body assy)
• Under- hood fuse block

5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (3 of 5) for GMC Sierra 2002 1500:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body relay block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Evap canister purge solenoid (top right rear of engine)
• Evap canister vent solenoid (right front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Hot in run
• Hot in run & start
• Left i/p fuse block
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk b
• Red
• Red e
• Red/
• Rev
• Stop lps fuse 20a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor adapter (4wd) (left side of trans) c2

5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (4 of 5) for GMC Sierra 2002 1500:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control) (behind accelerator pedal)
• Act cntrl
• App sens 1
• App sens 2
• App sens 3
• C11
• Cruise control system
• Cruise req
• D11
• Data
• Ecm1 fuse 10a
• Ect fuse 15a
• Fuel composition sensor (flex fuel)
• G103 (left rear of engine)
• G104 (left rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Intake air temperature/ mass airflow sensor (in air induction duct)
• Left i/p fuse block
• Pnk
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 2 grd
• Sens 3 grd
• Sens grd
• Signal
• Stp lp in
• Tan
• Throttle actuator control (tac) module (w/ electronic throttle control) (in left rear of engine compt)
• Throttle actuator control motor (w/ electronic throttle control) (on throttle body)
• Throttle position sensor (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Under- hood fuse block
• Underhood fuse block
• Veh stop fuse 10a

5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, with Isolated Grounded HO2S Sensors (5 of 5) for GMC Sierra 2002 1500:

• (in engine harness)
• (left rear of engine) g104
• (right front of engine) g105
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• G103 (left rear of engine)
• Gen f
• Gen l
• Gnd
• Hot in run & start
• Iac coil hi
• Iac coil lo
• Iat sig
• Idle air control valve (top of throttle body)
• Ign
• Ign ctrl
• Ign feed
• Ign1 fuse 10a
• Ignition coils
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Left i/p fuse block
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi
• Pc sol lo
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Prnd c
• Recirc door
• Recirc sw
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S152
• S153
• S154
• S157
• Sens gnd
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm
• Tcc sol
• Tft sens sig
• Tp sig
• Trans rng a
• Transfer case shift control module (behind headlight switch)
• Underhood fuse block
• Vss high
• Vss low
• Vss out

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for GMC Sierra 2002 1500

List of elements for Back-up Lamps Wiring Diagram for GMC Sierra 2002 1500:

• (allison trans- mission only)
• (left side of transmission) back-up lamp switch
• A trailer connector (heavy duty)
• A/t
• B/u lp fuse 25a
• B10
• Back-up alarm
• C152a
• G401 (on spare tire hoist bracket)
• G403 (left frame rail near body mount)
• Hot in run or start
• Left back-up lamp
• M/t
• Mirrors system
• Park/neutral position (pnp) switch (left side of transmission)
• Pnk
• Rear lamps junction block (front of rear bumber, on crossmember)
• Reverse switch
• Right back-up lamp
• Shift interlock system
• Trlr b/u fuse 10a
• Underhood fuse block (left side of eng compt, near battery)
• Veh b/u fuse 15a

Exterior Lamps Wiring Diagram (1 of 2) for GMC Sierra 2002 1500

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for GMC Sierra 2002 1500:

• (left side of dash)
• (left side of dash, near kick panel) body relay block
• (not used)
• (upper left kick panel) g203
• 3 bulbs
• A10
• A12
• A4 c1
• Auto
• B10
• Base
• Base except crew cab
• Bea- con switch
• Block
• Body control module (lower left side of dash)
• Body relay
• Body relay block
• Body relay block (left side of dash, near kick panel)
• C1 b12
• C1 b2
• C1 c11
• C1 f6
• C1 f7
• C10
• C11 c1
• C2 a6
• C2 a7
• C2 b6
• C2 d11
• C2 d12
• C3 c2
• C4 a
• C6 g
• Center high mounted stoplamp (chmsl)
• Chmsl fuse 10a
• Clearance lamps
• D c5
• D10
• D11
• Driver outside rear-
• Emer- gency vehicle
• Emergency vehicle roof lamp relay (left side of engine compt)
• Except sierra c3
• Ext lmps rly
• Ext- erior illum- ination lamps relay
• F12
• Fr prk fuse 10a
• Front pass- enger outside rear- view mirror
• Fuse block (under left side of dash)
• G100 (left radiator support bracket)
• G200 (upper right kick panel)
• G203 (right "b" pillar)
• G203 (upper left kick panel)
• G305 (left "b" pillar)
• Haz lp fuse 20a
• Hazard
• Head
• Headlamp switch
• Hot at all times
• Hot in run or start
• Instrument panel cluster (ipc)
• Int prk fuse 10a
• Int prk lmps
• Interior lights system
• L (not used)
• Left
• Left front marker lamp
• Left front park/ turn lamp
• Left i/p fuse block
• Left i/p fuse block (lower left side of dash)
• Left turn in
• Left turn ind
• Lr prk fuse 10a
• Lt turn fuse 10a
• Mirror
• Nca
• Normal
• Park
• Park lamp relay
• Park lps fuse 30a
• Park rly ctrl
• Pnk
• Power dist- ribution
• Provision
• Red
• Red p
• Right
• Right front marker lamp
• Right front park/ turn lamp
• Right i/p junction block (lower right side of dash)
• Right turn in
• Right turn ind
• Roof beacon relay (left "b" pillar)
• Roof c
• Roof marker lamps
• Rr prk fuse 10a
• Rt turn fuse 10a
• S100
• S101
• S200 (at roof marker lamps)
• S201
• Seo 1 fuse 15a
• Seo 2 fuse 30a
• Sierra c3
• Sp203
• Starter solenoid
• Stop lamp switch (on brake pedal support bracket)
• Stop lps fuse 20a
• Trailer circuit
• Turn fuse 20a
• Turn signal multi- function switch
• Turn/hazard flasher
• Under- hood fuse block
• Underhood fuse block (left side of eng compt, near battery)
• Uplevel
• Uplevel & crew cab
• Veh stop fuse 10a
• View
• W/ roof beacon provisions

Exterior Lamps Wiring Diagram (2 of 2) for GMC Sierra 2002 1500

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for GMC Sierra 2002 1500:

• (not used)
• (tail lamp jumper harn) s905
• (tail lamp jumper harn) s907
• (w/ dual rear wheel)
• A c3
• C1 d
• C2 a
• C2 c
• C2 d
• C3 d
• C3 h
• C4 c
• C4 d
• C4 f
• E c1
• G401 (on spare tire hoist bracket)
• Left license lamp
• Left marker lamps
• Left rear park/ turn signal lamp
• Left tail/ stop- lamp
• Marker lamps
• Rear lamps junction block (front of rear bumper, on cross- member)
• Right license lamp
• Right rear park/ turn signal lamp
• Right tail/ stop- lamp
• S903 (tail lamp jumper harn)
• S904
• S906
• Tailgate marker lamp

Trailer/Camper Adapter Wiring Diagram for GMC Sierra 2002 1500

List of elements for Trailer/Camper Adapter Wiring Diagram for GMC Sierra 2002 1500:

• (in camper wiring harn)
• (pickup)
• (utilities)
• 10a
• Body control module
• Body relay block (left side of dash)
• C1 c
• C1 c11
• C1 f2
• C10 c1
• C198
• C2 d10
• C2 f10
• C3 b3
• C3 e1
• C3 e5
• C5 a
• C5 b
• C5 c
• C5 d
• C5 f
• Camper extension
• Camper in-line connector
• Camper wiring (pickup only)
• Chmsl fuse 10a
• D10
• E10
• F c1
• G203 (upper left kick panel) (pickup) (upper left dash at "a" pillar) (utilities)
• G401 (on spare tire hoist bracket)
• Heavy duty trailer wiring
• Hot at all times
• Hot in reverse (utilities) hot at run and start (pickup)
• Hot with back-up lamp switch closed
• Hot with parklamp relay energized
• Hot with stoplamp switch depressed
• Int prk fuse 10a
• Light duty trailer wiring (pickup only)
• Nca
• Pickup only
• Red
• S400 (in camper wiring harn)
• S401 (in camper wiring harn)
• S402 (in camper wiring harn)
• S403 (in camper wiring harn)
• S404 (in camper wiring harn)
• S405
• S406
• Splice pack
• Stud 1
• Stud 1 maxi fuse 40a
• Stud 2
• Stud 2 maxi fuse 30a
• Trailer in-line connector
• Trl l trn fuse 10a
• Trl prk fuse 15a
• Trl r trn fuse 10a
• Trlr b/u fuse 15a
• Turn/ hazard switch
• Underhood fuse block (left side of eng compt, near battery)
• Utilities only
• Veh b/u fuse 15a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for GMC Sierra 2002 1500

List of elements for Ground Distribution Wiring Diagram (1 of 4) for GMC Sierra 2002 1500:

• (engine harness) (gas)
• (others) (canada)
• 4.3l
• 4wd
• A c1
• A/c
• A/c high pressure recirculating switch
• A/c low pressure switch
• Automatic transmission control (allison)
• Auxiliary
• B8 c2
• Battery relay
• Body relay block (under left side of dash)
• Brake fluid
• C d
• C1 f6
• Coil module
• Compressor clutch
• Coolant
• Coolant level switch
• Cruise control module
• D12
• Data link connector (dlc)
• Diesel
• Dual tank
• Electronic brake control module (ebcm)
• Engine
• Engine oil level switch
• Front axle actuator
• Front windshield washer fluid pump
• Fuel heater
• Fuel injection control module (ficm)
• Fuel pump & sender assembly
• Fuel pump relay
• G100 (on left front body mount)
• G102 (on right front of engine block)
• G103 (on right front of engine block)
• G103 (right rear of engine)
• G104 (left rear of engine block)
• G104 (on left front of engine block)
• G105 (left front of engine block)
• G106 (right front of engine)
• G110 (on left front body mount)
• Gas
• Glow plug/ intake heater relay assembly
• Headlamp relay
• Heated oxygen sensor (ho2s) (bank 1 sensor 1)
• Heated oxygen sensor (ho2s) (bank 1 sensor 2)
• Heated oxygen sensor (ho2s) (bank 2 sensor 1)
• Heated oxygen sensor (ho2s) (bank 2 sensor 2)
• Ign 1 relay
• Ignition
• Ignition coils (left bank) (v8 gas only)
• Ignition coils (right bank) (v8 gas only)
• Instrument panel cluster (ipc)
• Left battery
• Left daytime running lamp (drl)
• Left front fog lamp
• Left horn
• Left park/ turn signal lamp
• Level switch
• Mass air flow (maf) sensor
• Motor module
• Nca
• Oil level switch
• Other gas
• Park/ neutral position switch
• Pnk
• Power
• Powertrain control module (pcm)
• Right battery
• Right daytime running lamp (drl)
• Right front fog lamp
• Right horn
• Right park/ turn signal lamp
• S100 (forward lamp harn)
• S102 s120 (engine harness) (diesel)
• S103 (engine harness)
• S156 (eng harn)
• S157 (engine harn)
• Secondary fuel pump & sender assembly
• Starter relay
• Takeoff (pto)
• Throttle actuator control module
• Transfer case shift control module
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt)
• Underhood lamp
• V8 gas
• W/atc
• W/o atc
• Washer fluid level sensor
• Water in fuel sensor
• Windshield wiper

Ground Distribution Wiring Diagram (2 of 4) for GMC Sierra 2002 1500

List of elements for Ground Distribution Wiring Diagram (2 of 4) for GMC Sierra 2002 1500:

• (not used)
• 4wd
• A/t shift lock solenoid
• A12
• A16
• Acc power outlet
• Air temperature actuator
• Ashtray lamp
• B12
• Base
• Base except crew cab
• Base except crew cab
• Bin lamp
• Blower motor switch
• Body control module (bcm)
• Body relay block (under left side of dash)
• C10
• Center high mounted stop/ lamp
• Cigar lighter
• Clearance lamps
• Courtesy lamp relay
• Crew cab
• Data link connector (dlc)
• Dimmer switch
• Door locks relay
• Driver door key switch
• Driver door lock switch
• Driver mini wedge (door jamb switch)
• Driver outside rearview mirror
• Driver window/ door lock switch
• E13
• E16
• Emergency vehicle roof lamp relay
• Fog/ cargo lamp switch
• Front passenger door lock switch
• Front passenger mini wedge (door jamb switch)
• G203 (upper left kick panel)
• G207
• Headlamp dimmer switch
• Heated memory seat switch
• Heavy duty
• Ignition key alarm switch
• Inflatable restraint ip module switch
• Instrument panel cluster (ipc)
• Left i/p fuse block (lower left side of dash)
• Left roof marker lamp
• Luxury
• Mode actuator
• Nca
• Outside rearview mirror switch
• Park position switch
• Power door lock switch
• Power take off switch
• Power window switch
• Qs4 control module
• Radio
• Recirculation door motor
• Remote control door lock reciever
• Right roof marker lamp
• S201 (near roof marker lamps)
• Sp203
• To body relay block (page 4 of 4)
• Tow/ haul switch
• Traction control switch
• Trailer wiring
• Transfer case shift control module
• Transfer case shift control switch
• Turn/ hazard flasher
• Uplevel
• Uplevel & crew cab

Ground Distribution Wiring Diagram (3 of 4) for GMC Sierra 2002 1500

List of elements for Ground Distribution Wiring Diagram (3 of 4) for GMC Sierra 2002 1500:

• (base seat)
• (heavy duty) trailer connector
• (light duty) trailer wiring
• (not used)
• A11
• A18
• Air temperature actuator
• Auto a/c
• Base pickup
• Blower motor resistor assembly
• C10
• Centennial
• Crew cab
• Door lock switch
• Driver back heated seat element
• Driver bolster/ lumbar switch
• Driver cushion heated seat element
• Driver heated seat module
• Driver seat adjuster switch
• Except base crewcab
• Except base pickup
• Except crew cab
• Except crewcab
• Front
• Front passenger door lock switch
• Front passenger heated seat module
• Front passenger heated seat switch
• Front passenger lumbar/ bolster switch
• Front passenger mini wedge (door jamb switch
• Front passenger mini wedge (door jamb switch)
• Front passenger seat adjuster switch
• Front passenger window/ door lock switch
• Full feature seat
• G203 (upper left kick panel)
• G304 (under driver's seat)
• G305 (on left "b" pillar)
• G306 (on right "b" pillar)
• G401 (on spare tire hoist bracket)
• Hvac control module
• I/p compart- ment lamp
• Inflatable restraint sensing & diagnostic module
• Left back-up lamp
• Left i/p fuse block (lower right side of dash)
• Left license lamp
• Left rear mini wedge (door jamb switch)
• Left rear tail/ stoplamp
• Left rear turn signal lamp
• Memory seat module
• Mode actuator motor
• Nca
• Nca c
• Passenger back heated seat element
• Passenger cushion heated seat element
• Passenger outside rearview mirror
• Power seat
• Power window switch
• Radio
• Rap 2 relay
• Rear lamps junction block (front of rear bumper on crossmember)
• Rear seat audio (rsa) controller
• Recirculation actuator
• Right back-up lamp
• Right license lamp
• Right rear mini wedge (door jamb switch)
• Right rear tail/ stoplamp
• Right rear turn signal lamp
• Right rear window/ door lock switch
• Roof beacon ground
• Roof beacon relay
• Roof marker lamps
• Roof window defogger
• S201 (near roof marker lamps)
• S307 (seat harness)
• S308 (seat harness)
• S309 (seat harness)
• S314 (memory (seat harness)
• Seat belt switch
• Uplevel crewcab
• Window lock out

Ground Distribution Wiring Diagram (4 of 4) for GMC Sierra 2002 1500

List of elements for Ground Distribution Wiring Diagram (4 of 4) for GMC Sierra 2002 1500:

• (not used)
• A12
• Ashtray lamp
• Automatic day/night rearview mirror w/ compass
• Auxiliary power outlet
• B12
• Battery monitor
• Body relay block (under left side of dash)
• C10
• C11
• Centennial
• Center high mounted stop/ lamp
• Cigar lighter
• Courtesy lamp relay
• Courtesy reading lamp
• Data link connector (dlc)
• Dimmer switch
• Early
• Emergency vehicle roof lamp relay
• Except base crew cab
• F12
• Fog/ cargo lamp switch
• From sp203 (page 2 of 4)
• G207
• Heavy duty
• Ignition key alarm switch
• Inside air temperature sensor assembly
• Late
• Left vanity mirror
• Nca
• Park position switch
• Reading lamps
• Remote control door lock reciever
• Right vanity mirror
• Roof beacon switch
• S338
• Selectable ride switch
• Sierra w/ pro
• Thermo cupholder assembly
• Tow/ haul switch
• Traction control switch
• Trailer wiring
• Transfer case shift control switch
• Uplevel
• Uplevel & crew cab
• Uplevel crew cab
• Vehicle interface unit (viu)

HEADLIGHTS

Headlight Wiring Diagram for GMC Sierra 2002 1500

List of elements for Headlight Wiring Diagram for GMC Sierra 2002 1500:

• (gasoline) (diesel)
• (right front of engine)
• A11
• Al sens ref
• Al sens sig
• Ambient light sensor (on top center of dash)
• Auto
• B10
• Body control module (bcm) (lower left side of dash)
• Body relay block (under left side of dash)
• Brake sw sig
• C1 b4
• C1 d3
• C1 f7
• C2 f7
• Daytime running lamps (drl) relay
• Drl fuse 10a
• Drl relay
• E10
• E11
• E12
• E13
• Exterior lamps system (park lamp relay)
• F2 c1
• Flash- to-pass
• Fog lamp relay
• Fog lamp switch
• Fog lp relay
• Fog lp sw
• Fog lps fuse 15a
• Ftp in
• G100 (on left radiator support)
• G105 g106
• G203
• Head
• Headlamp dimmer switch
• Headlamp relay
• High
• High beam
• Hot at all times
• Hot in run or start
• Igne fuse 10a
• Left daytime running lamp
• Left fog lamp
• Left high beam headlamp
• Left low beam headlamp
• Low
• Lt hdlp fuse 15a
• Nca
• On indicator
• Park
• Park brake switch (park brake assembly)
• Pickups
• Right daytime running lamp
• Right fog lamp
• Right high beam headlamp
• Right low beam headlamp
• Rt hdlp fuse 15a
• S100
• S101
• S102 s120
• Splice pack sp203 (left side of dash)
• Tbc fuse 10a
• Underhood fuse block (left side of engine compt)
• Utilities

HORN

Horn Wiring Diagram for GMC Sierra 2002 1500

List of elements for Horn Wiring Diagram for GMC Sierra 2002 1500:

• (left side of engine compartment)
• A11
• C1 body control module (in center console)
• G100 (left radiator support bracket)
• Horn fuse 15a
• Horn relay
• Horn switch
• Hot at all times
• Left horn (left side of radiator support)
• Nca
• Right horn (right side of radiator support)
• S101
• S10o
• Underhood fuse block

INSTRUMENT CLUSTER

Driver Information Center Wiring Diagram for GMC Sierra 2002 1500

List of elements for Driver Information Center Wiring Diagram for GMC Sierra 2002 1500:

• (diesel)
• (gas)
• Battery
• Body junction block
• Body relay block
• Body relay block (under left side)
• Class 2 data
• Data link connector (below steering column)
• Driver information center
• G103 (right rear of engine)
• G105 (left front of eng block)
• Ground
• Hot at all times
• Hot in run and start
• Hot in run, start or w/ rap energized
• Ign 1 fuse 10a
• Ign 1 volt
• Instrument panel cluster
• Interior lights system
• Lamp voltage
• Left i/p fuse block (on lower left side of dash)
• Pnk
• Powertrain control module (pcm) (on left front of engine compt)
• Radio fuse 10a
• Rap volt
• Rdo 1 fuse 10a
• Sp205 (behind headlamp switch)
• Underhood fuse block (on left side of engine compt)
• Underhood junction block
• Vss
• Vss out

Instrument Cluster Wiring Diagram for GMC Sierra 2002 1500

List of elements for Instrument Cluster Wiring Diagram for GMC Sierra 2002 1500:

• (diesel)
• (gas)
• (not used)
• 4wd ind
• A10
• A11
• A12
• A4 pnk
• Abs ind
• Air bag ind
• B10
• B11
• B12
• Batt
• Body control module
• Body relay block
• Body relay block (under left side)
• Body wiring relay block
• Brake ind
• C201
• Computer data lines system
• Cruise control module
• Cruise fuse 10a
• Cruise ind
• Data lines
• Driver information center
• Eng spd
• Engine controls system
• Engine oil pressure sensor
• Exterior lights system
• Fuel gauge
• G100 (on left front body mount)
• G103 (right rear of engine)
• G105 (left front of eng block)
• G203 (upper left dash, at "a" pillar)
• G203 (upper left kick panel)
• Gnd
• High beam ind
• Hot at all times
• Hot in off, run or start
• Hot in run
• Hot in run and start
• Hour meter
• Ign
• Ign 1
• Ign 1 fuse 10a
• Ign o fuse 10a
• Igniton 1
• Illum pwr
• Illumination (6 bulbs)
• Instrument cluster
• Interior lights system
• Led dim
• Left i/p fuse block (on lower left side of dash)
• Left turn ind
• Lo washer fluid
• Logic
• Low wash
• Message center
• Nca
• Odometer
• Off/run/ start
• Oil gauge
• Oil press
• Park sw
• Park switch (part of the park brake assembly)
• Pnk
• Powertrain control module (pcm) (on left front of engine compt)
• Prnd321
• Radio
• Radio fuse 15a
• Right turn ind
• S100
• Seat belt ind
• Serial
• Service engine soon ind
• Shift ind
• Sp203
• Spare
• Speedometer
• Tach out
• Tachometer
• Temp gauge
• Trans temp gauge
• Trip
• Underhood fuse block
• Underhood fuse block (on left side of engine compt)
• Volts gauge
• Vss
• Vss out
• Wait to start
• Washer fluid level switch (in washer fluid reservoir)

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for GMC Sierra 2002 1500

List of elements for Courtesy Lamps Wiring Diagram for GMC Sierra 2002 1500:

• (diesel)
• (gas)
• (not used)
• A10
• A12
• B (not used)
• B1 (not used)
• B12
• Body control module (on lower left side of dash, below steering column)
• Body relay block (under left side of dash, near left kick panel)
• C10
• C11
• C12
• C9 c2
• Cargo lamp
• Cargo lamp switch
• Cargo lp sw
• Courtesy lamp relay
• Ctsy lp fuse 15a
• Ctsy lp rly
• D (not used)
• Dome lamp
• Dome lamp defeat switch
• Dome lamp switch
• Dome lp dft
• Dome lp sw
• G105 (left front of engine block)
• G106 (right front of engine block)
• G203 (upper left kick panel)
• Headlamp & panel dimmer switch
• Hot at all times
• Inadvert rly
• Inadvertant power relay
• Lamp request
• Left i/p courtesy lamp
• Left i/p fuse block (on lower left side of dash)
• Left mini wedge (door jamb switch)
• Lt door jamb
• Right i/p courtesy lamp
• Right mini wedge (door jamb switch)
• Rt dr jamb
• S102
• Sp203
• Tan
• Underhood fuse block (on left side of engine compt, near battery)
• Underhood off lamp assembly

Instrument Illumination Wiring Diagram (1 of 2) for GMC Sierra 2002 1500

List of elements for Instrument Illumination Wiring Diagram (1 of 2) for GMC Sierra 2002 1500:

• A12
• Ashtray lamp
• Auto
• B12
• Bezel lamp
• Bin lamp
• Body control module (on lower left side of dash, below steering column)
• Body relay block
• Body relay block (under left side of dash, near kick panel)
• C10
• Cigar lighter
• Convenience package
• Dim in
• Driver heated seat switch
• Driver power door lock switch
• Driver window door lock switch
• Except convenience package
• Front passenger door lock switch
• Front passenger heated seat switch
• Front passenger window switch
• G200 (upper right kick panel)
• G203 (upper left kick panel)
• G305 (on left "b" pillar)
• G306 (on right "b" pillar)
• H c4
• H c6
• Head
• Headlamp & panel dimmer switch
• Hot at all times
• I/p dim
• Int prk fuse 10a
• Left i/p fuse block
• Left i/p fuse block (on lower left side of dash)
• Left power door lock switch
• Left power window switch
• Left rear window switch
• Outside rearview mirror switch
• Parade mode
• Park
• Park lp rly
• Park lp sig
• Park lps fuse 30a
• Parklamp relay
• Radio
• Rear seat audio controller
• Right i/p fuse block
• Right rear window switch
• S302
• S304
• S306
• Sp203
• Underhood fuse block (on left side of engine compt, near battery)

Instrument Illumination Wiring Diagram (2 of 2) for GMC Sierra 2002 1500

List of elements for Instrument Illumination Wiring Diagram (2 of 2) for GMC Sierra 2002 1500:

• (6 bulbs)
• (auto a/c)
• (man a/c)
• (man a/c) (auto a/c)
• (under left side of dash, near kick panel) body relay block
• A except sierra denali
• A10
• B sierra denali
• Base
• Body relay block (under left side of dash, near kick panel)
• C c10
• C2 f12
• Cargo/ fog lamp switch
• Cd player
• Clock coil spring
• Driver infor- mation center
• G103 (right rear of engine)
• G200 (upper right kick panel)
• G203 (upper left kick panel)
• Hvac control module
• Illum fuse 10a
• Inflatable restraint i/p module switch
• Instrument cluster
• Lamps
• Left control switch
• Left i/p fuse block (on lower left side of dash)
• Nca
• Power take off switch (if equipped)
• Radio
• Rear wheel steering mode select switch (sierra denali)
• Right control switch
• Right i/p fuse block (on lower right side of dash)
• Roof beacon switch
• S234
• Sp203
• Traction control switch
• Transfer case shift control switch
• Underhood fuse block (on left side of engine compt, near battery)
• Up level

MEMORY SYSTEMS

Memory Seat Wiring Diagram for GMC Sierra 2002 1500

List of elements for Memory Seat Wiring Diagram for GMC Sierra 2002 1500:

• 570a
• 570b
• 5v ref
• A/t shift lock
• A3 a3
• B7 c1
• Batt pos volt
• Btsi fuse 10a
• D1 c1
• Driver seat adjuster switch
• Driver seat front vertical motor
• Driver seat front vertical position sensor
• Driver seat horizontal motor
• Driver seat horizontal position sensor
• Driver seat rear vertical motor
• Driver seat rear vertical position sensor
• Driver seat recliner motor
• Driver seat recliner motor position sensor
• Driver window door lock switch
• Front vert dn
• Front vert up
• Frt dn
• Frt up
• Ft vert dn ctrl
• Ft vert pos sen
• Ft vert up ctrl
• G304 (under driver's seat)
• Ground
• Hall effect sensor
• Hor fwd
• Hor rwd
• Horiz fwd
• Horiz fwd ctrl
• Horiz pos sen
• Horiz rwd
• Horiz rwd ctrl
• Hot at all times
• Hot in park
• Ign 3 fuse 10a
• Ign 3 volt
• Left i/p fuse block (lower left side of dash)
• Memory 1 sw
• Memory 2 sw
• Memory seat module (underside of driver's seat)
• Memory set sw
• Memory/heated seat switch
• Mir/lock fuse 3a
• Nca
• Not used
• Rcl 1
• Rcl 2
• Rear dn
• Rear up
• Rear vert dn
• Rear vert up
• Recl fwd
• Recl rwd
• Recline fwd
• Recline fwd ctrl
• Recline pos sen
• Recline rwd
• Recline rwd ctrl
• Red
• Rr vert dn ctrl
• Rr vert pos sen
• Rr vert up ctrl
• S307
• S310
• S314
• S315
• S316
• Seats circuit breaker 25a
• Sensor ground
• Set
• Shift interlock system
• Tan
• Underhood fuse block (at left side of engine compartment, near battery)

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for GMC Sierra 2002 1500

List of elements for Power Distribution Wiring Diagram (1 of 4) for GMC Sierra 2002 1500:

• (diagram 1 of 4)
• (early)
• (late)
• (not used)
• (on left side of engine compt) underhood fuse block
• A/c fuse 10a
• A/c relay
• Abs fuse 60a
• Accessory power outlet
• Air fuse 30a
• Atc fuse 20a
• Audio amplifier
• Automatic transmission control module (allison)
• Aux pwr fuse 20a
• B12
• Bat
• Battery cable junction block
• Body control module
• Body relay block (under left side of dash)
• C1 f2
• C10
• C12
• Cigar fuse 15a
• Cigar lighter
• Ctsy lp fuse 15a
• D10
• D11
• D12
• Data link connector (dlc)
• Daytime running lamp (drl) relay
• Diesel only
• Driver infor- mation center (dic)
• Driver seat
• Drl fuse 10a
• E nca
• E10
• Early
• Ecm b fuse 20a
• Electronic brake control module (ebcm)
• Engine control module (ecm)/ powertrain control module (pcm)
• Exterior illum lamps relay
• F10
• F12
• Fog lps fuse 15a
• Foglamp relay
• From air fuse b
• From fuse l block (diagram 4 of 4)
• From rap fuse c (diagram 1 of 4)
• Front blower motor resistor assembly
• Front passenger window/door lock switch
• Frt hvac fuse 30a
• Fuel pump relay
• Fusible link
• G200 (upper right kick panel)
• G203 (upper left kick panel)
• Hazard fuse 20a
• Headlamp dimmer switch
• Headlamp relay
• Headlamp switch
• Horn relay
• Hvac control module
• Inadvertent power relay
• Instrument panel cluster (ipc)
• Interior light sustem
• L nca
• Late
• Left battery
• Left generator
• Left i/p fuse block
• Luxury
• Nca
• Park lamps fuse 30a
• Parklamp relay
• Passenger seat
• Power takeoff (pto) relay
• Pwr wdo cb 25a
• Radio
• Radio fuse 15a
• Rap 1 fuse 50a
• Rap 2 fuse 50a
• Rap 2 relay
• Rdo amp fuse 25a
• Rear defogger relay
• Rear wheel steering control module
• Red
• Remote control door lock receiver
• Right generator (w/ dual generator)
• Right rear window switch
• Roof beacon relay
• Roof beacon switch
• S306 (console harness)
• S336
• S338
• Seo 1 fuse 15a
• Seo 2 fuse 30a
• Sierra denali
• Sierra pro
• Sp203
• Starter solenoid
• Stop lps fuse 20a
• Stoplamp switch
• Tbc fuse 10a
• Thermo cupholder assembly
• To ecm b fuse (diagram 1 of 4)
• To fuse block (mir/lock fuse) (diagram 4 of 4)
• To fusible link (diagram 3 of 4)
• To ign 1 relay (diagram 3 of 4)
• To ign a fuse (diagram 2 of 4)
• To park lamps fuse (diagram 1 of 4)
• Transfer case encoder motor
• Transfer case shift module
• Turn signal/ multi- function switch
• Under- hood fuse block (on left side of engine compt)
• Under- hood fuse block (on left side of engine)
• W/ 5x7 or 5y0
• W/ qs4

Power Distribution Wiring Diagram (2 of 4) for GMC Sierra 2002 1500

List of elements for Power Distribution Wiring Diagram (2 of 4) for GMC Sierra 2002 1500:

• (a/t)
• (canada built)
• (diesel)
• (early)
• (gas)
• (late)
• (m/t)
• (not used)
• (others)
• (w/ all)
• (w/o all)
• A/c relay
• A10
• A13
• Acc
• Air bag fuse 15a
• Automatic transmission (w/o allison) transmission control module (w/ allison)
• Auxilary power outlet
• B/u lp fuse 25a
• B11
• Back-up lamp switch (part of park/ neutral position switch (a/t))
• Battery monitor
• Body control module
• Body relay block (under left side of dash)
• Bulb test
• C1 a1
• C10
• C2 f6
• C3 (not used)
• Camshaft position (cmp) sensor (4.3l)
• Clutch start switch (m/t)
• Crank fuse 10a
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• D (gas) (diesel)
• Driver information center (dic)
• Drl relay
• E11
• E6 (not used)
• Eng 1 fuse 10a
• Engine control module (ecm) (diesel)
• Evaporative emission (evap) canister purge solenoid
• Evaporative emission (evap) canister vent solenoid
• Ext lps fuse 10a
• F10
• F11
• F12
• From cigar e
• Fuel heater (diesel)
• Fuse (diagram 1 of 4)
• G203 (upper left kick panel)
• Gas only
• Glow plug controller (diesel)
• Heated oxygen sensor (ho2s) (bank 1 sensor 1) (gas)
• Heated oxygen sensor (ho2s) (bank 1 sensor 2) (gas)
• Heated oxygen sensor (ho2s) (bank 2 sensor 1) (gas)
• Heated oxygen sensor (ho2s) (bank 2 sensor 2) (gas)
• I/p left fuse block (on lower left side of dash)
• Ign 1 fuse 10a
• Ign a fuse 40a
• Ign b fuse 50a
• Ign c fuse 20a
• Ign e fuse 10a
• Ign o fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Inside temperature sensor assembly
• Instrument panel cluster (ipc)
• Intake air heater (diesel) (calif. only)
• Intake air temperature (iat)/ mass air flow (maf) sensor
• Nca
• O2 a fuse 15a fuel ht fuse 15a
• O2 b fuse 15a ecm 1 fuse 10a
• Off
• Park/ neutral position switch (a/t)
• Pnk
• Pnk (canada built)
• Powertrain control module (pcm)
• Pro
• Rear defog relay
• Red
• Rr hvac fuse 30a
• Rr wiper fuse 15a
• Rr wpr fuse 25a
• Rtd fuse 30a
• Run
• S173 (ignition circuit to glow plug controller) (calif. only)
• S337
• S338
• Secondary fuel pump relay
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Sierra
• Splice pack sp203
• Start
• Starter relay
• Stud 1
• Stud 1 fuse 40a
• Stud 2
• Stud 2 fuse 30a
• To htr/ a/c fuse (diagram 3 of 4)
• To ign 1 relay (diagram 3 of 4)
• To retained accessory power relay (diagram 4 of 4)
• Traction assist switch
• Trailer connector
• Trailer wiring
• Trans control module
• Transfer case shift control switch
• Turn fuse 20a
• Turn signal/ multi- function switch
• Under- hood fuse block (on left side of engine compt)
• Underhood fuse block (on left side of engine compt)
• Vehicle interface unit (viu)
• W/ allison
• Windshield washer switch
• Windshield wiper motor module
• Ws wiper fuse 25a

Power Distribution Wiring Diagram (3 of 4) for GMC Sierra 2002 1500

List of elements for Power Distribution Wiring Diagram (3 of 4) for GMC Sierra 2002 1500:

• (diesel)
• (diesel) (gas)
• (gas)
• (not used)
• (np1)
• (np8)
• (on lower left side of dash) left i/p fuse block
• 4.3l
• 4wd fuse 15a
• Air temperature actuator
• All other gas
• Auxiliary battery relay
• B10
• Base
• Blower motor switch (manual)
• Brake fuse 10a
• C10
• C11
• C12
• C2 c1
• D10
• Diesel
• Driver heated seat switch
• E10
• E12
• Ecm 1 fuse 10a ecm prv fuse 15a
• Electronic brake control module (ebcm)
• Engine control module (ecm)/ powertrain control module (pcm)
• Etc fuse 15a (gas)
• From cruise g
• From eng 1 fuse (diagram 2 of 4) from ecm b fuse (diagram 1 of 4)
• From fuse link (diagram 1 of 4)
• From ign c f
• Front axle actuator
• Front passenger heated seat switch
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Fuel injector control module
• Fuse (diagram 2 of 4)
• Fusible link
• G104 (left rear of engine block) g106 (right front of engine)
• G114 (left rear of engine)
• Gas
• Htr/ a/c fuse 25a
• Hvac 1 fuse 10a
• Hvac control module
• Ign 1 relay
• Ign 3 fuse 10a
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition coil module
• Inj a fuse 15a (gas)
• Inj b fuse 25a 15a
• Mega fuse 125a
• Memory seat module
• Mode actuator
• Nca
• Pnk
• Rear wheel steering control module
• Rear wheel steering switch
• Recirculation actuator
• Red
• Right battery
• Right i/p fuse block (on lower right side of dash)
• S102 (engine harness) (gas)
• S104
• S120 (engine harness) (diesel)
• S152 (eng pnk harn)
• S154 (eng pnk harn)
• Stoplamp switch
• Throttle actuator control module
• Transfer case shift control module
• Under- hood fuse block (on left side of engine compt)
• Uplevel

Power Distribution Wiring Diagram (4 of 4) for GMC Sierra 2002 1500

List of elements for Power Distribution Wiring Diagram (4 of 4) for GMC Sierra 2002 1500:

• A10
• Base
• Body
• Body control module (bcm)
• C1 b4
• C1 c9
• C14
• C4 k
• C4 l
• C6 c (not used)
• C7 e
• Clock
• Coil spring (part of steering assembly)
• Door lock fuse 20a
• Door lock relay
• Door unlock relay
• Driver door lock switch
• Driver door unlock relay
• Driver information center
• Driver memory seat switch
• Driver seat adjuster switch
• Driver window/ door lock switch
• Except sierra
• F11
• From fuse block (diagram 2 of 4)
• From rap fuse d (diagram 1 of 4)
• Front passenger seat adjuster switch
• Front passenger window/ door lock switch
• Inline fuse
• Left full feature seat
• Left hand control switch
• Left i/p fuse block (on lower left side of dash)
• Left power door lock switch
• Left power seat
• Left power window/ door lock switch
• Memory seat switch
• Mir/ lock fuse 3a
• Nca
• Outside rear view mirror switch
• Pwr wdo cb 25a
• Radio
• Rap 1 relay
• Rap 2 fuse 10a (crew cab)
• Rap jmpr 30a
• Rdo 1 fuse 10a
• Rear seat audio controller
• Red
• Relay block (under left side of dash)
• Right full feature seat
• Right hand control switch
• Right i/p junction block
• Right power seat
• Seats circuit breaker 25a
• Sierra denali
• To rap 2 relay (diagram 1 of 4)
• Uplevel & 4-door
• Vehicle interface unit (viu)
• W/ ye9
• W/o ye9

POWER DOOR LOCKS

Power Door Lock Wiring Diagram, Base for GMC Sierra 2002 1500

List of elements for Power Door Lock Wiring Diagram, Base for GMC Sierra 2002 1500:

• (lower right side of i/p) right i/p fuse block
• 87a
• A12
• All times
• B11
• B12
• Battery
• Body control module (on lower left side of dash, below steering column)
• Body relay block (near left kick panel)
• C1 a11
• C1 a12
• C1 b8
• C1 f2
• C1 f4
• C211
• C4 a
• C4 d
• C4 m
• Door lock relay
• Door unlock relay
• Dr lk rly
• Dr lock fuse 20a
• Dr unlk rly
• Driver door lock actuator
• Driver door lock switch
• Drv dr unlk rly
• E10
• F10
• F12
• G203 (upper left kick panel)
• Ground
• Hot at all times
• Ign key sig
• Ignition key alarm switch (part of steering column assembly)
• Instrument panel cluster
• Left i/p fuse block (on lower left side of dash)
• Lock
• Lock fuse 15a
• Mir/ lock fuse 3a
• Nca
• Passenger door lock actuator
• Passenger door lock switch
• Powertrain control module (left front inside of engine compartment)
• Remote control door lock receiver (behind top center of dash)
• Serial data
• Splice pack
• Srl data
• Tan
• Tbc fuse 10a
• Underhood junction block (on left side of engine compt)
• Unlock
• Unlock fuse 15a
• Unlock jmpr fuse 30a
• Vss
• Vss signal

Power Door Lock Wiring Diagram, Up Level for GMC Sierra 2002 1500

List of elements for Power Door Lock Wiring Diagram, Up Level for GMC Sierra 2002 1500:

• (lower right side of i/p) right i/p fuse block
• 87a
• A12
• B11
• B12
• Battery
• Body control module (on lower left side of dash, below steering column)
• Body relay block (near left kick panel)
• C1 a11
• C1 a12
• C1 b8
• C1 f2
• C1 f4
• C11
• C211
• C4 a
• C4 d
• C4 m
• Door lock relay
• Door unlock relay
• Dr lock fuse 20a
• Driver door lock actuator
• Driver door unlock relay
• Driver window/door lock switch
• E10
• F10
• F12
• G203 (upper left kick panel)
• Ground
• Hot at all times
• Ign key switch
• Ignition key alarm switch (part of steering column assembly)
• Instrument panel cluster
• Left i/p block (on lower left side of dash)
• Lf dr unlk in
• Lock
• Lock fuse 15a
• Lock in
• Mir/lock fuse 3a
• Nca
• Passenger door lock actuator
• Passenger window/door lock switch
• Powertrain control module (left front inside of engine compartment)
• Remote control door lock receiver (behind top center of dash)
• Right i/p fuse block (on lower right side of i/p)
• Serial data
• Splice pack
• Srl data
• Tan
• Tbc fuse 10a
• Underhood junction block (on left side of engine compt)
• Unlock
• Unlock fuse 15a
• Unlock in
• Vss
• Vss signal

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for GMC Sierra 2002 1500

List of elements for Electrochromic Mirror Wiring Diagram for GMC Sierra 2002 1500:

• (behind left side of dash, at "a" pillar)
• (w/ onstar)
• (w/o onstar)
• (w/o onstar) (w/ onstar)
• A/t
• Ambient sensor
• B/u lp fuse 25a
• Back-up lamp switch (on left side of trans- mission)
• Back-up lamp switch (part of park/neutral position switch) (on left side transmission)
• Body relay block (left kick panel)
• C/m
• C1 a11
• C1 a4
• C1 b10
• C1 d8
• C1 f2
• C2 a9
• C2 f
• C2 f9
• C6 a
• C6 j
• C6 m
• Compass
• Dim fd
• Dim rtn
• Driver outside rearview mirror (utility)
• Electro-chromic
• G203
• Headlight sensor
• Hot in run or start
• Ign 1 fuse 10a
• Inside rearview mirror
• Left i/p fuse block (on lower left side of dash)
• M/t
• Nca
• Off
• Outside air temperature sensor (behind center grille)
• Pnk
• Selector switch
• Temp
• Underhood fuse block (left side of engine compt, near battery)
• Veh b/u fuse 15a

Power Mirror Wiring Diagram for GMC Sierra 2002 1500

List of elements for Power Mirror Wiring Diagram for GMC Sierra 2002 1500:

• (top left side of i/p, near "a" pillar)
• C1 m
• C2 g
• Defogger system
• Down
• Driver outside rearview mirror
• Driver power window/ door lock switch
• Fuse block
• G203
• Heating element
• Hot at all times
• Interior lights system
• L c4
• Left
• Left/ right motor
• Memory systems
• Mir/ lock fuse 3a
• Nca
• Outside rearview mirror switch
• Passenger outside rearview mirror
• Right
• Sp203
• Up/ down motor

POWER SEATS

6-Way Power Seat Wiring Diagram for GMC Sierra 2002 1500

List of elements for 6-Way Power Seat Wiring Diagram for GMC Sierra 2002 1500:

• (pickup)
• (utility)
• A (pickup)
• A (utility)
• Back
• Body relay block (under left side of dash)
• C1 c2
• C13
• Driver seat adjuster switch
• Driver seat front vertical motor
• Driver seat horizontal motor
• Driver seat rear vertical motor
• F9 a10
• Front dn
• Front pasenger seat front vertical motor
• Front passenger seat adjuster switch
• Front passenger seat horizontal motor
• Front passenger seat rear vertical motor
• Front up
• Fwd
• G304 (under driver's seat)
• Hot at all times
• Left i/p fuse block (on lower left side of dash)
• Rear dn
• Rear up
• Red
• S307
• Seat circuit breaker 25a
• Tan

Heated Seats Wiring Diagram for GMC Sierra 2002 1500

List of elements for Heated Seats Wiring Diagram for GMC Sierra 2002 1500:

• Battery
• Body relay block (under left side of dash)
• D12
• Driver back heated seat element
• Driver cushion heated seat element
• Driver heated seat assembly (under driver seat)
• Driver heated seat module
• Driver heated seat thermistor
• Driver seat heated switch
• Driver window/ door lock c1 switch
• Escalade ext
• Front passenger heated seat assembly (under passenger seat)
• G200 (upper right kcik panel)
• G203 (upper left) kick panel)
• G304 (under driver's seat)
• G305 (at left "b" pillar)
• Gnd
• Heated seat switch signal
• Heater on ind
• Hot at all times
• Hot in run
• Ign 3 fuse 10a
• Illum
• Interior lights system
• Left i/p fuse block (on lower left side of dash)
• Logic
• Nca
• Other
• Passenger back heated seat element
• Passenger cushion heated seat element
• Passenger heated seat module
• Passenger heated seat switch
• Passenger heated seat thermistor
• Ptc termistor
• Right i/p fuse block (on lower right side of dash)
• Right i/p junction block (lower right c1 side of dash)
• S309
• S314
• Seo 2 fuse 30a
• Solid state
• Sp203
• Underhood fuse block (left side of engine compartment)

Lumbar Wiring Diagram for GMC Sierra 2002 1500

List of elements for Lumbar Wiring Diagram for GMC Sierra 2002 1500:

• (pickup)
• (utility)
• B (pickup)
• B (utility)
• Body relay block (under left side of dash)
• C1 b7
• C1 c2
• C13
• Driver lumbar/ bolster switch
• Driver seat bolster m0tor
• Driver seat lumbar m0tor
• F7 a10
• G304 (under driver's seat)
• Hot at all times
• Left i/p fuse block (on lower left side of dash)
• Out
• Pass- enger lumbar/ bolster switch
• Passenger seat bolster m0tor
• Passenger seat lumbar m0tor
• Pnk
• Power seats circuit
• S307
• S309
• S310
• S311
• Seat circuit breaker 25a
• Tan

Passenger Full Feature Seat Wiring Diagram for GMC Sierra 2002 1500

List of elements for Passenger Full Feature Seat Wiring Diagram for GMC Sierra 2002 1500:

• A10
• Back
• Body relay block (behind left side of dash)
• C13
• Fr dn
• Fr up
• Front passenger seat adjuster switch
• Front passenger seat front vertical motor
• Front passenger seat horizontal motor
• Front passenger seat rear recliner motor
• Front passenger seat rear vertical motor
• Fwd
• G304 (under driver's seat)
• Hot at all times
• Left i/p fuse block (on lower left side of dash)
• Memory systems
• Power seats lumbar circuit
• Red
• Rr dn
• Rr up
• S309
• S311
• Seat circuit breaker 25a
• Tan

POWER WINDOWS

Power Window Wiring Diagram for GMC Sierra 2002 1500

List of elements for Power Window Wiring Diagram for GMC Sierra 2002 1500:

• Down
• Driver window motor
• Driver window/ door lock switch
• G203 (upper left i/p at "a" pillar)
• Hot in acc, run, bulb test, start & with rap relay energized
• Interior lights system
• Left down
• Left i/p fuse block (left side of i/p)
• Left up
• Passenger window motor
• Passenger window/ door lock switch
• Pwr wdo circuit breaker 25a
• Right down
• Right i/p fuse block (on lower right side of dash)
• Right up
• Splice pack sp203
• Tan
• Wdo dn relay
• Wdo up relay

RADIO

Radio Wiring Diagrams, Base for GMC Sierra 2002 1500

List of elements for Radio Wiring Diagrams, Base for GMC Sierra 2002 1500:

• Antenna
• Battery
• D10
• D12
• Dimmer
• G203 (upper left kick panel)
• Ground
• Hot at all times
• Hot with rap relay energized
• I/p lamp
• Ignition
• Interior lights system
• Left front door speaker
• Left i/p fuse block (on lower left side of dash)
• Left rear speaker
• Lf +
• Lf -
• Lr +
• Lr -
• Nca
• Radio
• Radio fuse 15a
• Rdo i fuse 10a
• Rf +
• Rf -
• Right front door speaker
• Right rear speaker
• Rr +
• Rr -
• Sp203
• Tan
• Underhood fuse block (on left side of engine compt)

Radio Wiring Diagrams, Up Level with OnStar for GMC Sierra 2002 1500

List of elements for Radio Wiring Diagrams, Up Level with OnStar for GMC Sierra 2002 1500:

• (data link connector)
• (in the console harness)
• Antenna
• Audio rtn
• Bare
• Battery
• Body junction block (near left kick panel)
• Body relay block
• Cd player- remote play- back device
• Cruise control module
• Dim sig in
• Dim sig out
• Dimmer
• Drain
• E&c line
• G203 (upper left kick panel)
• Ground
• Hot at all times
• Hot with rap relay energized
• I/p lamp
• Ignition
• Instrument cluster
• Interior lights system
• Left front door speaker
• Left i/p fuse block (on lower left side of dash)
• Left rear door speaker (crew cab) left rear speaker (except crew cab)
• Lf +
• Lf -
• Lr +
• Lr -
• Lt input
• Lt output
• Nca
• Pnk
• Powertrain control module (left front of engine compt)
• Radio
• Radio fuse 15a
• Radio on sig
• Rdo i fuse 10a
• Rf +
• Rf -
• Right front door speaker
• Right rear door speaker (crew cab) right rear speaker (except crew cab)
• Rr +
• Rr -
• Rt input
• Rt output
• S235
• S267
• S268
• S272
• Serial data
• Sp203
• Tan
• Underhood junction block (on left side of engine compt)
• Vehicle interface unit (in the right side of i/p near the instrument cluster)
• Vss signal

Radio Wiring Diagrams, Up Level without OnStar for GMC Sierra 2002 1500

List of elements for Radio Wiring Diagrams, Up Level without OnStar for GMC Sierra 2002 1500:

• Antenna
• Audio rtn
• Bare
• Battery
• Body junction block (near left kick panel)
• Body relay block
• Cd player- remote play- back device
• Cruise control module
• Data link connector (on left lower dash below the steering column)
• Dim sig in
• Dim sig out
• Dimmer
• Drain
• E&c line
• G203 (upper left kick panel)
• Ground
• Hot at all times
• Hot with rap relay energized
• I/p lamp
• Ignition
• Instrument cluster
• Interior lights system
• Left front door speaker
• Left i/p fuse block (on lower left side of dash)
• Left rear door speaker (crew cab) left rear speaker (except crew cab)
• Lf +
• Lf -
• Lr +
• Lr -
• Lt input
• Lt output
• Nca
• Pnk
• Powertrain control module (left front of engine compt)
• Radio
• Radio fuse 15a
• Radio on sig
• Rdo i fuse 10a
• Rf +
• Rf -
• Right front door speaker
• Right rear door speaker (crew cab) right rear speaker (except crew cab)
• Rr +
• Rr -
• Rt input
• Rt output
• Serial data
• Sp203
• Tan
• Underhood junction block (on left side of engine compt)
• Vss signal

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for GMC Sierra 2002 1500

List of elements for Shift Interlock Wiring Diagram for GMC Sierra 2002 1500:

• (upper left kick panel)
• A/t shift lock control solenoid (on steering column)
• A16
• A17
• B/u lps fuse 25a
• Btsi fuse 10a
• G203
• Hot in run or start
• Memory systems
• Nca
• Park/ neutral position switch (left side of transmission)
• Pnk
• Splice pack
• Stoplamp switch (top of brake pedal)
• Underhood fuse block

STARTING/CHARGING

Charging Wiring Diagram for GMC Sierra 2002 1500

List of elements for Charging Wiring Diagram for GMC Sierra 2002 1500:

• (not used)
• (on left front side of engine) battery cable junction block
• (w/ dual generator)
• Battery
• Body relay block (under left side of dash)
• Charge indicator control
• Computer data lines
• G100 (on left front body mount)
• G105 (left front of engine block)
• Generator (w/o dual generator) left generator (w/ dual generator)
• Generator field duty cycle signal
• Hot in run & start
• Ign 1 fuse 10a
• Instrument panel cluster
• Left battery
• Left i/p fuse block (on lower left side of dash)
• Message center
• Pnk
• Power distribution system
• Powertrain control module (pcm) or engine control module (ecm) (on left front of engine compartment)
• Red
• Right generator (w/ dual generator)
• Serial data class 2
• Solid state
• Splice pack (sp205) (on left side of dash behind headlamp switch)
• Starter solenoid
• Voltmeter

Starting Wiring Diagram for GMC Sierra 2002 1500

List of elements for Starting Wiring Diagram for GMC Sierra 2002 1500:

• (right front of engine) g106
• A/t
• Acc
• Battery cable junction block (on left front side of engine)
• Body relay block (under left side of dash)
• C10
• Clutch start switch (on top of clutch pedal bracket)
• Crank fuse 10a
• D11
• D12
• F10
• F11
• G100 (on left front body mount)
• G105 (left front of engine block)
• Ign a fuse 40a
• Ign c fuse 20a
• Ignition switch
• Left battery
• Left i/p fuse block (on lower left side of dash)
• Lock
• M/t
• Off
• Park/neutral position switch (on left side of transmission)
• Power distribution system
• Red
• Run
• S102
• Start
• Starter motor
• Starter relay
• Starter solenoid
• Starting/ charging system (charging circuit) (generator left)
• Starting/ charging system (charging circuit) (generator right) (diesel dual generator)
• Underhood fuse block (on left side of engine compt)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for GMC Sierra 2002 1500

List of elements for Supplemental Restraint Wiring Diagram for GMC Sierra 2002 1500:

• (under driver seat) g304
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• Air bag fuse 15a
• Air bag indicator
• Class 2 serial data
• Data link connector (dlc) (partial) (under left side of dash, below steering column)
• Disable signal
• Fuse block (on lower left side of dash)
• G203
• Ground
• High control
• Hot in run & start
• Ign 1 fuse 10a
• Ignition
• Indicator control
• Inflatable restraint front end discriminating sensor (on underside of radiator support)
• Inflatable restraint i/p module disable switch
• Inflatable restraint ip module
• Inflatable restraint sensing & diagnostic module (under driver's seat)
• Inflatable restraint steering wheel module
• Inflatable restraint steering wheel module coil
• Instrument panel cluster (ipc)
• Interior lights system
• Junction block-body (under left side of dash, near left kick panel)
• Low control
• Nca
• Off
• Pnk
• Sensor ground
• Sensor signal
• Shorting bar
• Solid state
• Splice pack 205 (sp205) (on left side of dash, behind headlamp switch)
• Splice pack sp203 (sp203) (on top left side of dash, near "a" pillar)

TRANSMISSION

4.3L

4.3L VIN W, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500

List of elements for 4.3L VIN W, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500:

• (not used) a
• (right rear of engine block) g103
• +5v
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual valve position switch
• A12
• Abs system
• Automatic transmission (4l60-e)
• Body control module (lower left side of dash, below steering column)
• Body relay block (under c1
• Brake fuse 10a
• Brk sw
• C11
• Cls 2 data
• D3, d2
• D4, d2
• Data link connector (under left side of dash)
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Engine coolant temperature sensor (rear of left cylinder head)
• Fluid temp sensor
• Frt axle sw
• G103 (right rear of engine block)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, bulb test & start
• Ign
• Ign0 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Instrument panel cluster (ipc)
• Left end of dash)
• Left i/p fuse block (lower left side of dash)
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Rev, lo
• S103
• Sens gnd
• Splice pack sp205 (left side of dash)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Throttle position sensor (on throttle body assy)
• Tp sig
• Trans rng a
• Underhood fuse block (left side of engine c2 compt, near the battery)
• Underhood fuse block (left side of engine compt, near battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss adapter (4wd) (left side of trans)
• Vss hi
• Vss lo
• W/ traction assist
• W/o traction assist

4.3L VIN X, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500

List of elements for 4.3L VIN X, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500:

• (not used) a
• (right rear of engine block) g103
• +5v
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual valve position switch
• A12
• Abs system
• Automatic transmission (4l60-e)
• Body control module (lower left side of dash, below steering column)
• Body relay block (under c1
• Brake fuse 10a
• Brk sw
• C11
• Cls 2 data
• D3, d2
• D4, d2
• Data link connector (under left side of dash)
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Engine coolant temperature sensor (rear of left cylinder head)
• Fluid temp sensor
• Frt axle sw
• G103 (right rear of engine block)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, bulb test & start
• Ign
• Ign0 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Instrument panel cluster (ipc)
• Left end of dash)
• Left i/p fuse block (lower left side of dash)
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Rev, lo
• S103
• Sens gnd
• Splice pack sp205 (left side of dash)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Throttle position sensor (on throttle body assy)
• Tp sig
• Trans rng a
• Underhood fuse block (left side of engine c2 compt, near the battery)
• Underhood fuse block (left side of engine compt, near battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss adapter (4wd) (left side of trans)
• Vss hi
• Vss lo
• W/ traction assist
• W/o traction assist

Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500

List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500:

• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• (under left side of dash) data link connector
• +8v ref
• +8v ref out
• 2-hi ind
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd ind lamp
• 4wd sw (lo)
• 4wd sw sig
• 4wd whl lock
• Atc fuse 20a
• Auto
• Auto 4wd
• Auxiliary battery relay
• Awd ind
• Body relay block (under c1
• Brake control
• Channel-a
• Channel-b
• Channel-c
• Channel-p
• Class ii data
• Ctrl
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Encoder logic
• Encoder motor
• Encoder rtn
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Front axle actuator
• Front prop- shaft speed sensor
• Ft axle ctrl
• Ft shaft rtn
• Ft shaft sig
• G110 (on left front body mount)
• G203 (upper left kick panel)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Ign 3 (run)
• Ign1 fuse 10a
• Illumination lamp (2)
• Instrument panel cluster
• Interior lights system
• Left i/p fuse block (lower left side of dash)
• Left side of dash)
• Lock sol out
• Logic
• Module gnd
• Motor (ccw)
• Motor (cw)
• Nca
• Neutral ind
• Pnk
• Rear prop- shaft speed sensor
• Red
• Rr shaft rtn
• Rr shaft sig
• Shift motor
• Solid state
• Splice pack sp203
• Splice pack sp205 (left side of dash)
• Tan
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt, near battery)

4.8L

4.8L VIN V, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500

List of elements for 4.8L VIN V, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500:

• (in engine harness)
• (not used) a
• (right rear of engine block) g103
• +5v
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual valve position switch
• A12
• Abs system
• Automatic transmission (4l60-e)
• Body control module (lower left side of dash, below steering column)
• Body relay block (under c1
• Brake fuse 10a
• Brk sw
• C11
• Cls 2 data
• D3, d2
• D4, d2
• Data link connector (under left side of dash)
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Engine coolant temperature sensor (front of left cylinder head)
• Except light duty w/ delphi ho2s
• Fluid temp sensor
• Frt axle sw
• G103 (right rear of engine block)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, bulb test & start
• Ign
• Ign0 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Instrument panel cluster (ipc)
• Left end of dash)
• Left i/p fuse block (lower left side of dash)
• Light duty w/ delphi ho2s
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Rev, lo
• S103
• S113
• Sens gnd
• Splice pack sp205 (left side of dash)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Throttle position sensor (on throttle body assy)
• Tp sig
• Trans rng a
• Underhood fuse block (left side of engine c2 compt, near the battery)
• Underhood fuse block (left side of engine compt, near battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss adapter (4wd) (left side of trans)
• Vss hi
• Vss lo
• W/ traction assist
• W/o traction assist

Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500

List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500:

• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• (under left side of dash) data link connector
• +8v ref
• +8v ref out
• 2-hi ind
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd ind lamp
• 4wd sw (lo)
• 4wd sw sig
• 4wd whl lock
• Atc fuse 20a
• Auto
• Auto 4wd
• Auxiliary battery relay
• Awd ind
• Body relay block (under c1
• Brake control
• Channel-a
• Channel-b
• Channel-c
• Channel-p
• Class ii data
• Ctrl
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Encoder logic
• Encoder motor
• Encoder rtn
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Front axle actuator
• Front prop- shaft speed sensor
• Ft axle ctrl
• Ft shaft rtn
• Ft shaft sig
• G110 (on left front body mount)
• G203 (upper left kick panel)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Ign 3 (run)
• Ign1 fuse 10a
• Illumination lamp (2)
• Instrument panel cluster
• Interior lights system
• Left i/p fuse block (lower left side of dash)
• Left side of dash)
• Lock sol out
• Logic
• Module gnd
• Motor (ccw)
• Motor (cw)
• Nca
• Neutral ind
• Pnk
• Rear prop- shaft speed sensor
• Red
• Rr shaft rtn
• Rr shaft sig
• Shift motor
• Solid state
• Splice pack sp203
• Splice pack sp205 (left side of dash)
• Tan
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt, near battery)

5.3L

5.3L VIN T, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500

List of elements for 5.3L VIN T, A/T Wiring Diagram, 4L60-E for GMC Sierra 2002 1500:

• (in engine harness)
• (not used) a
• (right rear of engine block) g103
• +5v
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual valve position switch
• A12
• Abs system
• Automatic transmission (4l60-e)
• Body control module (lower left side of dash, below steering column)
• Body relay block (under c1
• Brake fuse 10a
• Brk sw
• C11
• Cls 2 data
• D3, d2
• D4, d2
• Data link connector (under left side of dash)
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Engine coolant temperature sensor (front of left cylinder head)
• Except light duty w/ delphi ho2s
• Fluid temp sensor
• Frt axle sw
• G103 (right rear of engine block)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, bulb test & start
• Ign
• Ign0 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Instrument panel cluster (ipc)
• Left end of dash)
• Left i/p fuse block (lower left side of dash)
• Light duty w/ delphi ho2s
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Rev, lo
• S103
• S113
• Sens gnd
• Splice pack sp205 (left side of dash)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Throttle position sensor (on throttle body assy)
• Tp sig
• Trans rng a
• Underhood fuse block (left side of engine c2 compt, near the battery)
• Underhood fuse block (left side of engine compt, near battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss adapter (4wd) (left side of trans)
• Vss hi
• Vss lo
• W/ traction assist
• W/o traction assist

Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500

List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500:

• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• (under left side of dash) data link connector
• +8v ref
• +8v ref out
• 2-hi ind
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd ind lamp
• 4wd sw (lo)
• 4wd sw sig
• 4wd whl lock
• Atc fuse 20a
• Auto
• Auto 4wd
• Auxiliary battery relay
• Awd ind
• Body relay block (under c1
• Brake control
• Channel-a
• Channel-b
• Channel-c
• Channel-p
• Class ii data
• Ctrl
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Encoder logic
• Encoder motor
• Encoder rtn
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Front axle actuator
• Front prop- shaft speed sensor
• Ft axle ctrl
• Ft shaft rtn
• Ft shaft sig
• G110 (on left front body mount)
• G203 (upper left kick panel)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Ign 3 (run)
• Ign1 fuse 10a
• Illumination lamp (2)
• Instrument panel cluster
• Interior lights system
• Left i/p fuse block (lower left side of dash)
• Left side of dash)
• Lock sol out
• Logic
• Module gnd
• Motor (ccw)
• Motor (cw)
• Nca
• Neutral ind
• Pnk
• Rear prop- shaft speed sensor
• Red
• Rr shaft rtn
• Rr shaft sig
• Shift motor
• Solid state
• Splice pack sp203
• Splice pack sp205 (left side of dash)
• Tan
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt, near battery)

6.0L

6.0L VIN U, A/T Wiring Diagram, 4L80-E for GMC Sierra 2002 1500

List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L80-E for GMC Sierra 2002 1500:

• (in engine harness)
• (not used) a
• (right rear of engine block) g103
• +5v
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 4wd circuit (transfer case & front axle switch)
• 4wd low
• A/t fluid pressure manual valve position switch
• A/t ss
• A12
• Abs system
• Automatic transmission (4l80-e)
• Automatic transmission input shaft speed sensor (4wd) (on transmission)
• Body control module (lower left side of dash, below steering column)
• Body relay block (under c1
• Brake fuse 10a
• Brk sw
• C11
• Cls 2 data
• D3, d2
• D4, d2
• Data link connector (under left side of dash)
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Engine coolant temperature sensor (front of left cylinder head)
• Except light duty w/ delphi ho2s
• Fluid temp sensor
• Frt axle sw
• G103 (right rear of engine block)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, bulb test & start
• Ign
• Ign0 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Instrument panel cluster (ipc)
• Left end of dash)
• Left i/p fuse block (lower left side of dash)
• Light duty w/ delphi ho2s
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pnk
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Rev, lo
• S103
• S113
• Sens gnd
• Splice pack sp205 (left side of dash)
• Stoplight switch (top of brake pedal bracket)
• Tcc pwm
• Tcc pwm solenoid
• Tft sens sig
• Throttle position sensor (on throttle body assy)
• Tp sig
• Trans rng a
• Underhood fuse block (left side of engine c2 compt, near battery)
• Underhood fuse block (left side of engine compt, near battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss adapter (4wd) (left side of trans)
• Vss hi
• Vss lo
• W/ traction assist
• W/o traction assist

Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500

List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra 2002 1500:

• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• (under left side of dash) data link connector
• +8v ref
• +8v ref out
• 2-hi ind
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd ind lamp
• 4wd sw (lo)
• 4wd sw sig
• 4wd whl lock
• Atc fuse 20a
• Auto
• Auto 4wd
• Auxiliary battery relay
• Awd ind
• Body relay block (under c1
• Brake control
• Channel-a
• Channel-b
• Channel-c
• Channel-p
• Class ii data
• Ctrl
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Encoder logic
• Encoder motor
• Encoder rtn
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Front axle actuator
• Front prop- shaft speed sensor
• Ft axle ctrl
• Ft shaft rtn
• Ft shaft sig
• G110 (on left front body mount)
• G203 (upper left kick panel)
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Ign 3 (run)
• Ign1 fuse 10a
• Illumination lamp (2)
• Instrument panel cluster
• Interior lights system
• Left i/p fuse block (lower left side of dash)
• Left side of dash)
• Lock sol out
• Logic
• Module gnd
• Motor (ccw)
• Motor (cw)
• Nca
• Neutral ind
• Pnk
• Rear prop- shaft speed sensor
• Red
• Rr shaft rtn
• Rr shaft sig
• Shift motor
• Solid state
• Splice pack sp203
• Splice pack sp205 (left side of dash)
• Tan
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt, near battery)

WARNING SYSTEMS

Warning System Wiring Diagrams for GMC Sierra 2002 1500

List of elements for Warning System Wiring Diagrams for GMC Sierra 2002 1500:

• (on lower left side of dash, below steering column) body control module
• A11
• A12
• B10
• B11
• Base
• Battery
• Body relay block
• Body relay block (left side of dash, near kick panel)
• C1 f2
• C1 m
• C10
• C11
• Cruise fuse 10a
• Door jamb sw in
• Driver mini wedge switch
• Driver power window/ door lock switch
• Exterior lights
• F10
• Fuse block
• G203 (upper left kick panel)
• G304 (under driver's seat)
• Ground
• Hdlmp rly cntrl
• Headlamp switch
• Hot at all times
• Hot in run
• Hot in run or start
• Hot with park lights on
• Ign 1 fuse 10a
• Ignition 1
• Ignition 3
• Ignition key alarm switch
• Instrument cluster
• Instrument panel cluster (ipc)
• Int prk fuse 10a
• Key in ign
• Left i/p fuse block
• Left turn input
• Logic
• Nca
• Park brake sw
• Park brake switch
• Park lights in
• Pnk
• Powertrain control module (pcm) (left front of engine compartment)
• Right turn input
• Seat belt ind
• Seat belt input
• Seat belt switch (on driver's seat belt buckle)
• Serial data
• Sp203
• Sp205 (left side of dash)
• Tan
• Tbc fuse 10a
• Turn signal/ mulitfunction switch
• Underhood fuse block
• Uplevel

WIPER/WASHER

Wiper/Washer Wiring Diagram for GMC Sierra 2002 1500

List of elements for Wiper/Washer Wiring Diagram for GMC Sierra 2002 1500:

• (on left front body mount) g100
• (pick-up) (left rear of engine block) g106
• (right front of engine block) g105
• (utility)
• High
• Hot in acc & run
• Left i/p fuse block (on lower left side of dash)
• Lo pulse
• Mist
• Mux 1
• Mux 2
• Nca
• Off
• Pnk
• Pulse
• Red
• S100
• S102
• Underhood fuse block (at left side of engine compartment, near battery)
• W/w pmp fuse 15a
• Wash
• Windshield washer fluid pump (in washer fluid reservoir)
• Windshield wiper motor module (on firewall)
• Windshield wiper/ washer switch
• Ws wiper fuse 25a