ENGINE PERFORMANCE – Chevrolet Silverado 2500 2000 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Silverado 2500 2000

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (1 of 4) for Chevrolet Silverado 2500 2000:

• (attached to right rear of throttle body)
• (left rear of engine)
• (on bottom front of engine near crank pulley) crankshaft position sensor
• (on right front side of fuel tank) evaporative emissions canister vent valve
• (top right rear of engine) evaporative emissions (evap) canister purge valve
• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• 3-2 ctrl sol ctrl
• B1 c2
• Cam posit sens rtn
• Cam posit sens sig
• Camshaft position sensor (inside distributor)
• Crank posit sens rtn
• Crank posit sens sig
• Ect sens input
• Egr posit input
• Electronic brake control module (ebcm) (on left side of inner frame)
• Engine wiring harness junction block
• Evap
• G114
• G117 (right rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (in left exhaust pipe, before catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (in right exhaust pipe, before catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 2 (in right exhaust pipe, after catalytic converter)
• Ho2s sens hi
• Ho2s sens lo
• Hot in run or start
• Iat sens sig
• Idle air control (iac) valve
• Idle air ctrl (iac) a hi
• Idle air ctrl (iac) b lo
• Ign feed
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Instrument cluster system (tachometer)
• Knock sens sig
• Knock sensor (on rear of engine block)
• Map sens input
• Mass air flow sens sig
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Pnk
• Purge valve
• S103
• S104
• Sair pump rly
• Sens rtn
• Sens sig
• Tach out
• Tan
• Tcc on/off sol ctrl
• Tcc pwm sol ctrl
• Throttle posit sens
• Trans temp sens sig
• Vehicle control module (vcm) (on left front of engine compartment)
• Vehicle spd output sig
• Vehicle speed sensor (left rear side of transmission)
• Vehicle speed sensor shield
• Vss input
• Vss rtn
• Vss signal

4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Silverado 2500 2000

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (2 of 4) for Chevrolet Silverado 2500 2000:

• 1-2 shift sol
• 2-3 shift sol
• 3-2 control sol
• Automatic transmission
• B6 c3
• C ground
• C10
• C12
• D ign
• D10
• E maf sig
• E12
• E3 c2
• Eng1 fuse 10a
• Engine wiring harness junction block
• Exhaust gas recirculation valve (egr) (top front of engine, near thermostat housing)
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• G117 (right rear of engine)
• Heated oxygen sensor (ho2s) bank 1 sensor 2 (in left exhaust pipe, after catalytic converter)
• Hot in run or start
• Iat sensor
• Inja fuse 15a
• Injb fuse 15a
• Mass airflow sensor (in air intake duct)
• Nca
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Pressure control solenoid valve
• Red
• S103
• Tan
• Tcc on/off sol
• Tcc pwm sol
• Transmission fluid temperature (tft) sensor (internal)

4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Silverado 2500 2000

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (3 of 4) for Chevrolet Silverado 2500 2000:

• (in engine harn)
• (in fuel tank) fuel tank pressure sensor
• (left rear of engine)
• (right front of engine)
• 5v ref
• Air maxi fuse 30a
• Body wiring harness junction c1 block
• Engine coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (left rear side of cylinder head)
• Engine oil level switch (right side of oil pan)
• Engine wiring harness junction block
• Front axle actuator/ switch (center right side of axle housing)
• Fuse block
• G114
• G114 (left rear of engine)
• G119
• Hot at all times
• Hot in run or start
• Ign0 fuse 10a
• Ign1 fuse 10a
• Igne fuse 10a
• Instrument cluster
• Manifold absolute pressure (map) sensor (top right of engine, near fuel injectors)
• Map
• Pnk
• Red
• Red a
• Ref lo
• S102
• S104
• S105
• S106 (in engine harn)
• S107
• S108
• Secondary air injection pump relay (in engine wiring harness junction block)
• Secondary air injection reaction pump (right rear of engine compt)
• Secondary air injection reaction valve solenoid (right rear of engine compt)
• Service engine soon indicator
• Temp
• Throttle position (tp) sensor (on throttle body assembly)

4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Silverado 2500 2000

List of elements for 4.3L VIN W, Engine Performance Wiring Diagrams (4 of 4) for Chevrolet Silverado 2500 2000:

• (left frame rail near body mount)
• (right rear of engine)
• 12v battery fused
• 4wd fuse 15a
• 4wd low ind sig
• 5v ref voltage
• 5v return
• A/c comp rly ctrl
• A/c rec sw
• A/c request signal
• A/c system
• Automatic transfer case control module (above headlight switch)
• Body control module (below steering column)
• Body wiring harness junction block
• Brake fuse 10a
• Brake switch input
• C11
• Check eng lp ind out
• Clutch pedal position switch (top of clutch pedal bracket)
• Coil wire
• Comp cycling sw
• Coolant lev
• Cpp sw input
• Cruise control system
• Cruise control system, body computer system (vehicle speed signal)
• Cruise ctrl sig-eng
• Data link connector (below steering column)
• Distributor
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Egr valve cntrl
• Engine wiring harness junction block
• Est output sig
• Evap sol purge ctrl
• Four whl dr sig lo
• Fuel lev sensor
• Fuel pump relay
• Fuel pump rly ctrl
• Fuel pump/ level sensor (in fuel tank)
• Fuse block
• Fused output
• G117
• G119 (right front of engine)
• G402
• Gen term l
• Ground
• Hot at all times
• Hot in run & start
• Ign
• Ign timing sig.
• Ignition coil (top right rear of engine)
• Ignition control module (right side, top of engine)
• Ignition feed
• Manual 4wd
• Oil level signal
• Park/neutral position switch (left side of transmission)
• Pnk
• Pnk a
• Power
• Press ctrl sol hi
• Press ctrl sol lo
• Prndl a
• Prndl b
• Prndl c
• Prndl p
• Recirc door sig
• Red
• S102
• S103
• S199
• Sensor ground
• Serial data
• Serial data sig
• Sp205 (behind headlamp switch)
• Starting/char- ging system
• Stoplight switch (top of brake pedal bracket)
• Tach. sig.
• Trans press sig-bit 1
• Trans press sig-bit 2
• Trans press sig-bit 3
• Transfer case switch (on left front of transfer case)
• Vcm ground
• Vehicle control module (vcm) (on left front of engine compartment)
• Vss sig
• W/ atc

4.8L

4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000:

• (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
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuse block
• G117 (right 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
• 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
• Underhood junction block

4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000:

• (left front of engine)
• (left rear of engine)
• (left rear of engine) g114
• (not used)
• Air maxi fuse 30a c7
• 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)
• G104
• G110
• G114 (left rear of engine)
• G117 (right rear of engine)
• G402 (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 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• 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 (w/o electronic throttle control) (on throttle body assy)
• Under- hood junction block

4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge valve (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• Hot in run
• Hot in run & start
• 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
• Vehicle speed sensor (left rear of transmission)
• Vss adapter (4wd) (left side of trans)

4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control)
• Act cntrl
• App sens
• App sens 1
• App sens 2
• App sens 3
• App sense
• Cruise control system
• Cruise req
• D11
• Data
• Ect fuse 15a
• Fuse block
• G117 (right rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow sensor (in air intake duct)
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 1 rt
• Sens 2 grd
• Sens 2 rt
• Sens 3 grd
• Sens 3 rt
• 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 (dual track) (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Underhood junction block
• Veh stop fuse 10a

4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Controls Wiring Diagram, Except Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000:

• (in engine harness)
• (left front of engine) g110
• (left rear of engine) g114
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Automatic transfer case control module (above c3 headlight switch)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle switch (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• Fuse block
• G117 (right 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
• 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 switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out
• W/ atc
• W/ manual 4wd

4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000:

• (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
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuse block
• G117 (right 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
• 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
• Under- hood junction block

4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000:

• (eng harness) s114
• (left front of engine)
• (left rear of engine)
• (left rear of engine) g114
• (not used)
• Air maxi fuse 30a c7
• 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)
• G104
• G110
• G114 (left rear of engine)
• G117 (right rear of engine)
• G402 (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 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• S113 (eng harness)
• 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 (w/o electronic throttle control) (on throttle body assy)
• Under- hood junction block

4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge valve (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• Hot in run
• Hot in run & start
• 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
• Vehicle speed sensor (left rear of transmission)
• Vss adapter (4wd) (left side of trans)

4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control)
• Act cntrl
• App sens
• App sens 1
• App sens 2
• App sens 3
• App sense
• Cruise control system
• Cruise req
• D11
• Data
• Ect fuse 15a
• Fuse block
• G117 (right rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow sensor (in air intake duct)
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 1 rt
• Sens 2 grd
• Sens 2 rt
• Sens 3 grd
• Sens 3 rt
• 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 (dual track) (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Under- hood junction block
• Veh stop fuse 10a

4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000

List of elements for 4.8L VIN V, Engine Performance Wiring Diagrams, Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000:

• (in engine harness)
• (left front of engine) g110
• (left rear of engine) g114
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Automatic transfer case control module (above c3 headlight switch)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle switch (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• Fuse block
• G117 (right 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
• 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 switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out
• W/ atc
• W/ manual 4wd

5.3L

5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000:

• (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
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuse block
• G117 (right 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
• 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
• Underhood junction block

5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000:

• (left front of engine)
• (left rear of engine)
• (left rear of engine) g114
• (not used)
• Air maxi fuse 30a c7
• 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)
• G104
• G110
• G114 (left rear of engine)
• G117 (right rear of engine)
• G402 (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 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• 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 (w/o electronic throttle control) (on throttle body assy)
• Under- hood junction block

5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge valve (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• Hot in run
• Hot in run & start
• 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
• Vehicle speed sensor (left rear of transmission)
• Vss adapter (4wd) (left side of trans)

5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control)
• Act cntrl
• App sens
• App sens 1
• App sens 2
• App sens 3
• App sense
• Cruise control system
• Cruise req
• D11
• Data
• Ect fuse 15a
• Fuse block
• G117 (right rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow sensor (in air intake duct)
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 1 rt
• Sens 2 grd
• Sens 2 rt
• Sens 3 grd
• Sens 3 rt
• 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 (dual track) (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Underhood junction block
• Veh stop fuse 10a

5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Controls Wiring Diagram, Except Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000:

• (in engine harness)
• (left front of engine) g110
• (left rear of engine) g114
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Automatic transfer case control module (above c3 headlight switch)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle switch (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• Fuse block
• G117 (right 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
• 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 switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out
• W/ atc
• W/ manual 4wd

5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (1 of 5) for Chevrolet Silverado 2500 2000:

• (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
• Clutch sw
• Cmp
• Coolant lev
• D10
• E12
• Ecm1 fuse 10a
• Ecmb fuse 20a
• Ect sig
• Egr input
• Electronic suspension system
• Fuse block
• G117 (right 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
• 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
• Under- hood junction block

5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (2 of 5) for Chevrolet Silverado 2500 2000:

• (eng harness) s114
• (left front of engine)
• (left rear of engine)
• (left rear of engine) g114
• (not used)
• Air maxi fuse 30a c7
• 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)
• G104
• G110
• G114 (left rear of engine)
• G117 (right rear of engine)
• G402 (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 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• Red
• S103
• S104
• S104 (in engine harness)
• S108
• S113 (eng harness)
• 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 (w/o electronic throttle control) (on throttle body assy)
• Under- hood junction block

5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (3 of 5) for Chevrolet Silverado 2500 2000:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Body junction block
• Brake fuse 10a
• Camshaft position sensor (top center rear of engine)
• Clutch pedal position switch (top of pedal bracket)
• Evap canister purge valve (top right rear of engine)
• Evap canister vent valve (left front side of fuel tank)
• Exhaust gas recirculation valve (top right front of engine)
• F12
• Fuel tank pressure sensor (in fuel tank)
• Fuse block
• Hot in run
• Hot in run & start
• 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
• Vehicle speed sensor (left rear of transmission)
• Vss adapter (4wd) (left side of trans)

5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (4 of 5) for Chevrolet Silverado 2500 2000:

• A10
• Accelerator pedal position sensor (w/ electronic throttle control)
• Act cntrl
• App sens
• App sens 1
• App sens 2
• App sens 3
• App sense
• Cruise control system
• Cruise req
• D11
• Data
• Ect fuse 15a
• Fuse block
• G117 (right rear of engine)
• Gnd
• Ground
• Hot in run & start
• Hot in run or start
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow sensor (in air intake duct)
• Pnk
• Pnk d
• R/a input
• Red
• S/c input
• S103
• Sens 1 grd
• Sens 1 rt
• Sens 2 grd
• Sens 2 rt
• Sens 3 grd
• Sens 3 rt
• 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 (dual track) (w/ electronic throttle control) (on throttle body)
• Tp sens 1
• Tp sens 2
• Under- hood junction block
• Veh stop fuse 10a

5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000

List of elements for 5.3L VIN T, Engine Performance Wiring Diagrams, Canadian Built (5 of 5) for Chevrolet Silverado 2500 2000:

• (in engine harness)
• (left front of engine) g110
• (left rear of engine) g114
• 1-2 ss
• 2-3 ss
• 4wd low
• A/c clu
• A/c req
• A/c system
• Air pump
• Anti-lock brake system
• Anti-lock brake system (speed signal)
• Automatic transfer case control module (above c3 headlight switch)
• Cruise control system
• Cruise eng
• Ctrl
• Cyc sw in
• Delivered torq
• Egr ctrl
• Egr gnd
• Eng1 fuse 10a
• Evap canp
• Evap vent
• Front axle switch (right side of center on axle housing)
• Frt axle sw
• Fuel lev
• Fuel pmp
• Fuel sig ctrl
• Fuse block
• G117 (right 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
• 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 switch (left front of transaxle case)
• Under- hood junction block
• Vss high
• Vss low
• Vss out
• W/ atc
• W/ manual 4wd