All Wiring Diagrams for Chevrolet TrailBlazer 2004 model

AIR CONDITIONING

Automatic A/C Wiring Diagram, Long Wheel Base (1 of 3) for Chevrolet TrailBlazer 2004

List of elements for Automatic A/C Wiring Diagram, Long Wheel Base (1 of 3) for Chevrolet TrailBlazer 2004:

• (i/p harn, 15 cm from rec act breakout)
• (i/p harn, 5 cm from mode act breakout)
• 5v ref
• A/c comp status
• A/c low press sw
• A10
• A11
• A12
• Air temp door ctrl
• Air temp dr pos sig
• Air temperature actuator (left) (behind left center of dash)
• Air temperature actuator (right) (behind right center of dash)
• Ambient air temp sig
• Ambient air temperature sensor (on left center of radiator support)
• Ambient light
• Ambient light/ sunload sensor assembly (top center of dash)
• B10
• B11
• B12
• Battery
• Blower fuse 35 40a
• Blower motor
• Blower motor control module
• Blwr mtr spd ctrl
• Class 2
• Coolant bypass ctrl
• Coolant bypass valve
• Def door pos sig
• Defrost actuator (upper left center of dash)
• Defrost door ctrl
• G102 (left side of engine compartment)
• G103 (left front of engine compt)
• G201
• G302 (on lower left "b" pillar)
• Ground
• Hot at all times
• Hot in run
• Hvac control module
• Hvac i fuse 39 10a
• Hvac-b fuse 36 10a
• Ign 3
• Inside air temp ctrl
• Inside air temp sig
• Inside air temperature sensor (top of left "b" pillar, behind trim)
• Interior lights system
• Left sensor
• Low ref
• Low reference
• Lower left air temperature sensor (behind lower left of dash, on air duct)
• Lower right air temperature sensor (behind lower right of dash, on air duct)
• Lps dimming ctrl
• Lwr lt air temp sig
• Lwr rt air temp sig
• Mode actuator (upper left center of dash)
• Mode door ctrl
• Mode door pos sig
• Rear fuse block (below left rear seat)
• Recirc door cntrl
• Recirc dr pos sig
• Recirulation actuator (upper right side of dash)
• Red
• Right sensor
• S202 (i/p harn, 16.5 cm from strng col conn breakout)
• S211 (i/p harn, 16 cm from sp201)
• S216
• S217
• S271 (i/p harn, 14.5 cm from dash comp lamp breakout)
• S302 (5 cm from main harn breakout)
• Solid state
• Sp201 (right front of lower console)
• Sp201 (right frt of lower console)
• Tan
• Under- hood fuse block (left side of engine compt)
• Upper left air temperature sensor (behind upper left center of dash)
• Upper right air temperature sensor (behind upper right center of dash)
• Uppr lt air temp sig
• Uppr rt air temp sig

Automatic A/C Wiring Diagram, Long Wheel Base (2 of 3) for Chevrolet TrailBlazer 2004

List of elements for Automatic A/C Wiring Diagram, Long Wheel Base (2 of 3) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (forward lamp harn, 20 cm from windshield washer pump breakout)
• (left radiator support) g103
• +5v ref
• 0-12v pulse
• 4.2l 5.3l
• 5.3l 4.2l
• A/c compressor clutch
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of eng compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line near a/c comp)
• A/c relay 44
• A12
• Ambient light sens
• B11
• B12
• Body control module (beneath left rear seat, on rear fuse block)
• Comp rly cntrl
• Cooling fan
• Cooling fan relay
• D11
• Data link connector (on bottom of left side of dash)
• Eng fan fuse 20 10a
• F10
• F12
• G103 (left radiator support)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• Hall sensor
• High spd maf
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Low ref
• Low reference
• Lt sunload sens sig
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• Rt sunload sens sig
• S101
• S103 (fwd lamp harn, 8 cm from rear washer pump breakout)
• S113
• S232 (w/ immobilizer) (dash harn, 10 cm from steering column connector)
• Serial data
• Sp205 (behind left of dash)
• Underhood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram, Long Wheel Base (3 of 3) for Chevrolet TrailBlazer 2004

List of elements for Automatic A/C Wiring Diagram, Long Wheel Base (3 of 3) for Chevrolet TrailBlazer 2004:

• (lower console harness, between aux hvac module & c309)
• (lower console harness,near aux hvac module)
• (not used)
• (on lower right "d" pillar) g402
• 30a
• 5v reference
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Auc hvac enable
• Aux act door ctlr
• Aux air temp dr ctlr
• Aux air temp dr pos
• Aux blwr mtr
• Aux mode door ctrl
• Aux mode dr pos sig
• Auxiliary air temperature actuator
• Auxiliary blower motor (on right side of cargo area, behind trim panel)
• Auxiliary blower motor control processor (in rear hvac module, behind right rear interior panel)
• Auxiliary blower motor fuse
• Auxiliary console mode actuator
• Auxiliary mode actuator (below center of dash)
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery
• Class 2 data
• Console mode dr ctrl
• Ctrl mode dr pos sig
• Front auxiliary blower motor switch
• G201
• Ground auxiliary hvac control module
• Hot at all times
• Interior lights system
• Low reference
• Off
• Rear
• Rear fuse block (below left rear seat)
• Red
• Rr hvac fuse 13 30a
• S307 (console harness)
• S324
• S325
• S326
• S402
• Sp201 (right front of lower console)

Automatic A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Automatic A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2004:

• (i/p harn, 15 cm from mode act breakout)
• (i/p harn, 15 cm from rec act breakout)
• 5v ref
• A/c comp status
• A/c low press sw
• A10
• A11
• A12
• Air temp door ctrl
• Air temp dr pos sig
• Air temperature actuator (left) (behind left center of dash)
• Air temperature actuator (right) (behind right center of dash)
• Ambient air temp sig
• Ambient air temperature sensor (on left center of radiator support)
• Ambient light
• Ambient light/ sunload sensor assembly (top center of dash)
• B10
• B11
• B12
• Battery
• Blower fuse 35 40a
• Blower motor
• Blower motor control module
• Blwr mtr spd ctrl
• Class 2
• Def door pos sig
• Defrost actuator (upper left center of dash)
• Defrost door ctrl
• G102 (left side of engine compartment)
• G201
• G302 (on lower left "b" pillar)
• Ground
• Hot at all times
• Hot in run
• Hvac control module
• Hvac i fuse 39 10a
• Hvac-b fuse 36 10a
• Ign 3
• Inside air temp ctrl
• Inside air temp sig
• Inside air temperature sensor (top of left "b" pillar, behind trim)
• Interior lights system
• Left sensor
• Low ref
• Low reference
• Lower left air temperature sensor (behind lower left of dash, on air duct)
• Lower right air temperature sensor (behind lower right of dash, on air duct)
• Lps dimming ctrl
• Lwr lt air temp sig
• Lwr rt air temp sig
• Mode actuator (upper left center of dash)
• Mode door ctrl
• Mode door pos sig
• Rear fuse block (below left rear seat)
• Recirc door cntrl
• Recirc dr pos sig
• Recirulation actuator (upper right side of dash)
• Red
• Right sensor
• S202 (i/p harn, 16.5 cm from strng col conn breakout)
• S211 (i/p harn, 16 cm from sp201)
• S216
• S217
• S271 (i/p harn, 14.5 cm from dash comp lamp breakout)
• S302 (5 cm from main harn breakout)
• Solid state
• Sp201 (right front of lower console)
• Sp201 (right frt of lower console)
• Tan
• Under- hood fuse block (left side of engine compt)
• Upper left air temperature sensor (behind upper left center of dash)
• Upper right air temperature sensor (behind upper right center of dash)
• Uppr lt air temp sig
• Uppr rt air temp sig
• W/ rear a/c

Automatic A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Automatic A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (forward lamp harn, 20 cm from windshield washer pump breakout)
• (left radiator support) g103
• (not used)
• (w/ rear a/c)
• +5v ref
• 0-12v pulse
• 4.2l
• 4.2l 5.3l
• 5.3l
• A/c compressor clutch
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of eng compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line near a/c comp)
• A/c relay 44
• A12
• Ambient light sens
• Aux blwr hi spd
• Aux blwr lo spd
• Aux mode dr
• Auxiliary blower motor (w/ rear a/c) (below center of dash)
• Auxiliary console mode actuator (w/ rear a/c) (below center of dash)
• Auxiliary hvac control module
• B11
• B12
• Batt
• Body control module (beneath left rear seat, on rear fuse block)
• Class 2 data
• Comp rly cntrl
• Cooling fan
• D11
• Data link connector (on bottom of left side of dash)
• Eng fan fuse 20 10a
• F10
• F12
• Fan relay
• G103 (under left radiator support)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• G201
• Ground
• Hall sensor
• High spd maf
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Low ref
• Low reference
• Lt sunload sens sig
• Mode
• Off
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• Rt sunload sens sig
• S101
• S103 (fwd lamp harn, 8 cm from rear washer pump breakout)
• S113
• S232 (w/ immobilizer) (i/p harn, 10 cm from steering column connector)
• S307 (console harn)
• Serial data
• Sp201 (right front of lower console)
• Sp205 (behind left of dash)
• Underhood fuse block (left side of engine compt)

Compressor Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Compressor Wiring Diagram for Chevrolet TrailBlazer 2004:

• (dash harn, 10 cm from steering column connector) (w/ immobilizer) s232
• (left radiator support) g103
• +5v ref
• 4.2l 5.3l
• 5.3l 4.2l
• A/c compressor clutch
• A/c comp status
• A/c fuse 30 10a
• A/c low press sw
• A/c low pressure switch (at right rear of eng compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line near a/c comp)
• A/c relay 44
• A12
• B11
• B12
• Class 2
• Comp rly cntrl
• D11
• Data link connector (on bottom of left side of dash)
• F10
• F12
• G102 (left side of engine compartment)
• G107 (lower left side of engine)
• G201
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac 1 fuse 39 10a
• Hvac control module
• Hvac-b fuse 36 10a
• Ign 3
• Ign e fuse 22 10a
• Low ref
• Power
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• S103 (fwd lamp harn, 8 cm from rear washer pump breakout)
• S202 (dash harn, 16.5 cm from strng col conn breakout)
• S211 (dash harn, 16 cm from sp201)
• Serial data
• Sp201 (right frt of lower console)
• Sp205 (on lower left side of dash)
• Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Long Wheel Base (1 of 3) for Chevrolet TrailBlazer 2004

List of elements for Manual A/C Wiring Diagram, Long Wheel Base (1 of 3) for Chevrolet TrailBlazer 2004:

• (below right side of dash) blower motor resistor assembly
• (i/p harn, 15 cm from rec act breakout)
• (i/p harn, 5 cm from mode act breakout)
• (not used
• 5v ref
• A/c comp status
• A/c low press sw
• A10
• A11
• A12
• Air temp door ctrl
• Air temp dr pos sig
• Air temperature actuator (left) (behind left center of dash)
• Air temperature actuator (right) (behind right center of dash)
• B10
• B11
• B12
• Battery
• Blower fuse 35 40a
• Blower motor (below right side of dash)
• Blower motor relay
• Class 2
• Coolant bypass valve
• Def door pos sig
• Defrost actuator (upper left center of dash)
• Defrost door ctrl
• G102 (left side of engine compartment)
• G103 (left front of engine compt)
• G201
• Ground
• High
• Hot at all times
• Hot in run
• Htr water ctrl sol
• Hvac control module
• Hvac fuse 44 30a
• Hvac i fuse 39 10a
• Hvac-b 10a
• Ign 3
• Interior lights system
• Low
• Low ref
• Lps dimming ctrl
• Med1
• Med2
• Med3
• Mode actuator (upper left center of dash)
• Mode door ctrl
• Mode door pos sig
• Off
• Off blwr mtr cntrl
• Rear fuse block (below left rear seat)
• Recirc door cntrl
• Recirulation actuator (upper right side of dash)
• Red
• S202 (i/p harn, 16 cm from strng col conn breakout)
• S211 (i/p harn, 16 cm from sp201)
• S216
• S217
• Solid state
• Sp201 (right front of lower console)
• Sp201 (right frt of lower console)
• Tan
• Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Long Wheel Base (2 of 3) for Chevrolet TrailBlazer 2004

List of elements for Manual A/C Wiring Diagram, Long Wheel Base (2 of 3) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (forward lamp harn, 20 cm from windshield washer pump breakout)
• (left radiator support) g103
• +5v ref
• 0-12v pulse
• 4.2l 5.3l
• 5.3l 4.2l
• A/c compressor clutch
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of eng compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line near a/c comp)
• A/c relay
• Comp rly cntrl
• Cooling fan
• D11
• Data link connector (on bottom of left side of dash)
• E12
• Eng fan fuse 20 10a
• F12
• Fan relay
• G103 (left side of radiator support)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• Hall sensor
• High spd maf
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Low ref
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• S101
• S103 (fwd lamp harn, 8 cm from rear washer pump breakout)
• S113
• S232 (w/ immobilizer) (dash harn, 10 cm from steering column connector)
• Serial data
• Sp205 (behind left of dash)
• Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Long Wheel Base (3 of 3) for Chevrolet TrailBlazer 2004

List of elements for Manual A/C Wiring Diagram, Long Wheel Base (3 of 3) for Chevrolet TrailBlazer 2004:

• (lower console harness, between aux hvac module) & c309)
• (not used)
• (on lower right "d" pillar) g402
• 30a
• 5v reference
• A10
• A11
• A12
• Auc hvac enable
• Aux act door ctlr
• Aux air temp dr ctlr
• Aux air temp dr pos
• Aux blwr mtr auxiliary hvac control module
• Aux mode door ctrl
• Aux mode dr pos sig
• Auxiliary air temperature actuator
• Auxiliary blower motor (on right side of cargo area, behind trim panel)
• Auxiliary blower motor control processor (in rear hvac module, behind right rear interior panel)
• Auxiliary blower motor fuse
• Auxiliary mode actuator (below center of dash)
• B10
• B11
• B12
• Battery
• Class 2 data
• Console mode actuator
• Console mode dr ctrl
• Ctrl mode dr pos sig
• Dimming ctrl
• Front auxiliary blower motor switch
• G201
• Ground
• Hot at all times
• Interior lights system
• Low reference
• Off
• Rear
• Rear fuse block (below left rear seat)
• Red
• Rr hvac fuse 13 30a
• S307 (console harness)
• S324
• S325
• S326
• S402
• Sp201 (right front of lower console)

Manual A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Manual A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2004:

• (below right side of dash) blower motor resistor assembly
• (i/p harn, 15 cm from rec act breakout)
• (i/p harn, 5 cm from mode act breakout)
• 5v ref
• A/c comp status
• A/c low press sw
• A10
• A11
• A12
• Air temp door ctrl
• Air temp dr pos sig
• Air temperature actuator (left) (behind left center of dash)
• Air temperature actuator (right) (behind right center of dash)
• Aux hvac enable
• B10
• B11
• B12
• Battery
• Blower fuse 35 40a
• Blower motor (below right side of dash)
• Blower motor relay
• Class 2
• Def door pos sig
• Defrost actuator (upper left center of dash)
• Defrost door ctrl
• G102 (left side of engine compartment)
• G201
• Ground
• High
• Hot at all times
• Hot in run
• Hvac control module
• Hvac fuse 44 30a
• Hvac i fuse 39 10a
• Hvac-b fuse 36 10a
• Ign 3
• Interior lights system
• Low
• Low ref
• Lps dimming ctrl
• Med1
• Med2
• Med3
• Mode actuator (upper left center of dash)
• Mode door ctrl
• Mode door pos sig
• Off
• Off blwr mtr cntrl
• Rear fuse block (below left rear seat)
• Recirc door cntrl
• Recirulation actuator (upper right side of dash)
• Red
• S202 (i/p harn, 16 cm from strng col conn breakout)
• S211 (i/p harn, 16 cm from sp201)
• S216
• S217
• Solid state
• Sp201 (right front of lower console)
• Sp201 (right frt of lower console)
• Tan
• Under- hood fuse block (left side of engine compt)
• W/ rear a/c

Manual A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Manual A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (forward lamp harn, 20 cm from windshield washer pump breakout)
• (left radiator support) g103
• (not used)
• (w/ rear a/c)
• +5v ref
• 0-12v pulse
• 4.2l 5.3l
• 5.3l 4.2l
• A/c compressor clutch
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of eng compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line near a/c comp)
• A/c relay 44
• Aux dr mtr cntrl
• Aux hvac enable
• Auxiliary console mode actuator (w/ rear a/c) (under lower console)
• Auxiliary hvac control module
• Bi lvl
• Comp rly cntrl
• Cooling fan
• D11
• Data link connector (on bottom of left side of dash)
• Eng fan fuse 20 10a
• F10
• F12
• Fan relay
• Floor
• G103 (left radiator support)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• G201
• Ground
• Hall sensor
• High spd maf
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Ign voltage
• Lo ref
• Low ref
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• S101
• S103 (fwd lamp harn, 8 cm from rear washer pump breakout)
• S113
• S232 (w/ immobilizer) (dash harn, 10 cm from steering column connector)
• S307 (console harn)
• Serial data
• Sp201 (right front of lower console)
• Sp205 (behind left of dash)
• Underhood fuse block (left side of engine compt)
• Upper
• W/ rear a/c

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram, with Traction Control for Chevrolet TrailBlazer 2004

List of elements for Anti-lock Brakes Wiring Diagram, with Traction Control for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (on bottom left side of dash) data link connector (dlc)
• 4.2l
• 5.3l
• Abs fuse 33 60a
• Abs pump
• Anti-lock indicator
• Auto a/c
• B10
• Body control module (bcm) (beneath left rear seat, on rear fuse block)
• Brake fluid level switch (on brake master cylinder fluid reservoir)
• Brake fluid lvl sig
• Brake fuse 51 10a
• Brake indicator
• C11
• Cruise control system
• Delivered torque sig
• Delivered torque signal
• Electronic brake control module (ebcm) (on inner left frame rail, beside transmission)
• G107 (on lower left side of engine)
• G201 (ground splice pack, near right front of lower console)
• G304 (on outside of left frame rail, near electronic brake control module)
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac 1 fuse 39 10a
• Ign e fuse 22 10a
• Ignition 3
• Instrument panel cluster
• Interior lights system
• Ipc/dic fuse 24 10a
• Left front wheel speed sensor
• Lf whl spd sens ref
• Lf whl spd sens sig
• Man a/c
• Pnk
• Powertrain control module (pcm) (4.2l: on upper left side of engine, 5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• Red
• Requested torque sig
• Requested torque signal
• Rf whl spd sens ref
• Rf whl spd sens sig
• Right front wheel speed sensor
• S211
• S239
• Serial data
• Sp201
• Sp205 (behind left of dash, near headlamp switch connector)
• Stop lamp switch (above brake pedal, on bracket)
• Tan
• Tcc brake switch sig
• Trac active telltale
• Trac disable telltale
• Traction active indicator
• Traction control switch
• Traction disable sw
• Traction disable switch
• Traction disabled indicator
• Underhood fuse block (left side of engine compt)
• Vehicle speed signal
• Vss

Anti-lock Brakes Wiring Diagram, without Traction Control for Chevrolet TrailBlazer 2004

List of elements for Anti-lock Brakes Wiring Diagram, without Traction Control for Chevrolet TrailBlazer 2004:

• (on bottom left side of dash) data link connector (dlc)
• 4.2l
• 5.3l
• A10
• Abs fuse 33 60a
• Abs pump
• Anti-lock indicator
• B10
• Body control module (bcm) (beneath left rear seat, on rear fuse blck)
• Brake fluid level switch (on brake master cylinder fluid reservoir)
• Brake fuse 51 10a
• Brake indicator
• C11
• Cruise control system
• Electronic brake control module (ebcm) (on inner left frame rail, beside transmission)
• G107 (on lower left side of engine)
• G304 (on outside of left frame rail, near electronic brake control module)
• Hot at all times
• Hot in run
• Hot in run or start
• Ign 3
• Ign e fuse 22 10a
• Instrument panel cluster
• Ipc/dic fuse 24 10a
• Left front wheel speed sensor
• Lf sens low ref
• Lf sens sig
• Lvl sens sig
• Pnk
• Powertrain control module (pcm) (4.2l: on upper left side of engine, 5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• Red
• Rf sen low ref
• Rf sens sig
• Right front wheel speed sensor
• S239
• Serial data
• Sp205 (behind left of dash, near headlamp switch connector)
• Stop lamp switch (above brake pedal, on bracket)
• Tan
• Tcc brake sw
• Underhood fuse block (left side of engine compt)
• Vehicle speed signal
• Vss

ANTI-THEFT

Forced Entry Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Forced Entry Wiring Diagram for Chevrolet TrailBlazer 2004:

• (behind left side of dash, near headlamp switch connector) splice pack sp205
• (in body harn,
• 4.2l
• 5.3l
• A10
• A11
• A12
• A14
• Ajar
• B10
• B11
• B13
• B17
• Battery b+
• Body control module (beneath left rear seat, on rear fuse block)
• C (xuv)
• C4 b11
• Class 2 data
• Data link connector (dlc) (on bottom left side of dash)
• Door ajar sig
• Door ajar switch
• Down
• Driver door latch assembly
• Driver door module (below driver's door switch panel)
• E12
• Endgate key cylinder switch
• Endgate module (xuv) (center of endgate)
• Exterior lights system
• F10
• F14
• F8 c2
• Front passenger door latch assembly
• Front passenger door module (below front passenger door switch panel)
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• Ground
• Head- lamps system
• Headlamp relay ctrl
• Horn relay ctrl
• Horns system
• Hot at all times
• Instrument panel cluster
• K (except xuv)
• Key cyl down sig
• Key cyl up sig
• Key switch
• Key switch sig
• Left rear door jamb switch
• Liftgate ajar sig
• Liftgate ajar switch
• Liftgate module (except xuv) (center of liftgate)
• Liftglass ajar sig
• Liftglass ajar switch
• Ll ajar sig
• Low ref
• Lower left endgate actuator
• Lr door ajar sig
• Nca
• Parklamp relay ctrl
• Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Rear fuse block
• Rear fuse block (below left rear seat)
• Right rear door jamb switch
• Rr door ajar sig
• S302
• S914 (left side of endgate)
• S915 (center of endgate)
• Security
• Splice pack sp306
• Tan
• Tbc 2 fuse 7 10a
• Tbc 3 fuse 4 10a
• Tbc 4 fuse 40 10a
• Tbc 5 fuse 32 10a
• Trunk, tailgate, fuel doors system
• Ul ajar sig
• Under right rear seat)
• Upper left endgate actuator
• Upper right endgate actuator
• Ur ajar sig

Pass-Key Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Pass-Key Wiring Diagram for Chevrolet TrailBlazer 2004:

• 12v ref
• 4.2l
• 5.3l
• A11
• B10
• B11
• Battery
• Body control module (beneath left rear seat)
• Computer data lines
• Data
• Data link connector (under left side of dash)
• F14
• G302 (lower left "b" pillar)
• Ground
• Hot at all times
• Instrument panel cluster
• Nca
• Passlock sensor (at ignition switch)
• Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• Rtn
• S302
• Security ind
• Sensor ret
• Sensor sig
• Serial data
• Splice pack sp205 (behind left side of dash)
• Tbc 1 fuse 31 10a
• Underhood fuse block (left side of engine compt)

BODY CONTROL MODULES

Body Control Modules Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Body Control Modules Wiring Diagram for Chevrolet TrailBlazer 2004:

• (gmc)
• 12v ref
• 5v ref
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A3 bat positive voltage a4
• Accessory voltage
• Air conditioning system
• Ambient light sen sig
• Ambient lt sen lo ref
• Anti-theft system
• B1 c1
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• Back up lamp pwr
• Bat positive voltage
• Bat postive voltage
• Bcm class 2 ser data
• Body control module (beneath left rear seat, on rear fuse block)
• C4 b11
• Class 2 serial data
• Computer data lines system
• Courtesy lamp pwr
• Courtesy lps pwr
• Courtesy lps sig
• D12
• Door lock rly ctrl
• Door locks system
• Door unlock rly ctrl
• Drl def on ind ctrl
• Drl def sw sig
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• E5 c2
• Exterior lights system
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• F8 c2
• Flash-to-pass sw sig
• Fog lamp relay ctrl
• Front fog lps sw sig
• G302 (on lower left "b" pillar)
• Ground
• Head hi beam rly ctrl
• Head lo beam rly ctrl
• Headlights system
• Headlp wash rly ctrl
• Headlps high beam pwr
• Headlps on ind ctrl
• Headlps sw on sig
• Headlps wash sw sig
• Horn relay ctrl
• Horns system
• Hot at all times
• Hot in acc or run
• Hot in acc, run or start
• Hot in run
• Hot in run or start
• I/p dimmer sw lo ref
• I/p lamps dimming ctrl
• Ign 1 voltage
• Ign b voltage
• Ign d voltage
• Inclne sen alrm on sig
• Int lps defeat sw sig
• Interior light system
• Interior lights system
• Key in ign sw sig
• Left sunload sen sig
• Lf door ajar sw sig
• Lr pwr wnd lkout ctrl
• Lr pwr wnd sw dn ctrl
• Lr pwr wnd sw up ctrl
• Midgate ajar ind sw
• Midgate sw up sig
• Nca
• Park brake sw sig
• Park brake switch (on parking brake assembly)
• Park lamp rly ctrl
• Park lps sw sig
• Pnk
• Power distribution system
• Power windows system
• Rap relay ctrl
• Rear fog lp rly ctrl
• Rear fog lps sw sig
• Rear fuse block
• Rear washer rly ctrl
• Rear washer sw sig
• Rear wiper/washer sw
• Remote radio ctrl sig
• Right sunload sen sig
• Rr door ajar sw sig
• Rr pwr wnd lkout ctrl
• Rr pwr wnd sw dn ctrl
• Rr pwr wnd sw up ctrl
• S302
• Security sys lo ref
• Security sys sen sig
• Sound systems
• Tan
• Tbc 1 fuse 31 10a
• Tbc 2 fuse 7 10a
• Tbc 3 fuse 4 10a
• Tbc 4 fuse 40 10a
• Tbc 5 fuse 32 10a
• Tbc acc fuse 31 3a
• Tbc ig fuse 50 3a
• Tbc ign 1 fuse 16 10a
• Tbc run fuse 52 3a
• Trunk, tailgate, fuel doors system
• Underhood fuse block
• Warning systems
• Windsh wiper sw sig 2
• Wiper/washer system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Computer Data Lines Wiring Diagram for Chevrolet TrailBlazer 2004:

• (not used)
• 4.2l
• 5.3l
• A11
• Audio amplifier
• Auxiliary hvac control module (under lower console)
• B11
• Body control module (beneath left rear seat, on rear fuse block)
• Cigar fuse 13 20a
• Class 2 serial data
• Data link connector (dlc) (on bottom left side of dash)
• Digital radio receiver
• Digital video disc (dvd) player
• Driver door module (in left front door)
• Driver memory seat module (below left front seat)
• Electronic brake control module (ebcm) (on inner left frame rail, beside transmission)
• F14
• Front passenger door module (below front passenger door switch panel)
• G102 (left side of underhood compt, near rear of underhood fuse block)
• G201 (ground splice pack, near right front of lower console)
• Hot at all times
• Hvac control module (center of dash)
• Inflatable restraint sensing & diagnostic module (below rear of center console)
• Instrument panel cluster
• Liftgate module (center of liftgate)
• Lwb w/ auto a/c
• Manual a/c
• Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Radio
• S202
• S232 (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout)
• Splice pack sp201 (at lower right front of lower console)
• Splice pack sp205 (behind left side of dash, near headlamp switch connector)
• Splice pack sp306 (in body harn, under right rear seat)
• Swb w/ auto a/c
• Tan
• Theft deterrent control module
• Transfer case shift control module (behind lower left side of dash)
• Underhood fuse block (on left side of eng compt)
• Vehicle communication interface module (swb: under right rear seat) (lwb: right rear floor pan)
• W/ immobilizer
• W/ traction control
• W/o immobilizer
• W/o traction control

COOLING FAN

Cooling Fan Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Cooling Fan Wiring Diagram for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (forward lamp harn, 20 cm from windshield washer pump breakout) s113
• 4.2l
• 5.3l
• Clutch cntrl
• Cooling fan
• Fan fuse 20 10a
• Fan relay
• Fan speed sig
• G103 (under left radiator support)
• G108 (lower left side of engine)
• Ground
• Hall sensor
• Hot in run or start
• Low ref
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• Underhood fuse block (left side of engine compt)

CRUISE CONTROL

4.2L VIN S

4.2L VIN S, Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2004:

• 5 volt ref
• Accelerator pedal position sensor (above accelerator pedal, on bracket)
• App sensor 1
• App sensor 2
• B10
• B4 c1
• C9 c2
• Close
• Cruise release
• E3 c3
• Electronic brake control module (on inner left frame rail, beside transmission)
• Exterior lights system
• Hot at all times
• Hot in run
• Hot in run and start
• Hvac i fuse 39 10a
• Ign e fuse 22 10a
• Low ref
• On sw
• On/off switch
• Open
• Pnk
• Powertrain control module (on upper left side of engine)
• Rear fuse block (below left rear seat)
• Res/accel sw
• Res/accel switch
• Set/coast sw
• Set/coast switch
• St/lp fuse 12 25a
• Stop lamp input
• Tac motor ctrl 1
• Tac motor ctrl 2
• Tan
• Tcc/brake switch (above brake pedal, on bracket)
• Throttle body (throttle actuator control motor)
• Tp sensor 1
• Tp sensor 2
• Turn signal/ multifunction switch
• Underhood fuse block (on left side of engine compartment)
• Veh stop fuse 34 15a
• Vehicle speed sensor (vss) (on left rear of transfer case)
• Vehicle speed sig
• Vss hi
• Vss lo

5.3L VIN P

5.3L VIN P, Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2004:

• 5 volt ref
• Accelerator pedal position sensor (above accelerator pedal, on bracket)
• App sensor 1
• App sensor 2
• B10
• B4 c1
• C9 c2
• Close
• Cruise release
• E12 c1
• E3 c3
• Electronic brake control module (on inner left frame rail, beside transmission)
• Etc fuse 23 15a
• Exterior lights system
• G108 (lower left side of engine)
• Ground
• Hot at all times
• Hot in run and start
• Hot in run rear fuse block (below left rear seat)
• Hvac i fuse 39 10a
• Ign e fuse 22 10a
• Ign voltage
• Low ref
• On sw
• On/off switch
• Open
• Pnk
• Powertrain control module (near lower left front of engine)
• Res/accel sw
• Res/accel switch
• Set/coast sw
• Set/coast switch
• St/lp fuse 12 25a
• Stop lamp input
• Tac motor ctrl
• Tan
• Tcc/brake switch (above brake pedal, on bracket)
• Throttle actuator control module (attached to throttle shaft)
• Throttle body (throttle actuator control motor)
• Tp sensor 1
• Tp sensor 2
• Turn signal/ multifunction switch
• Underhood fuse block (on left side of engine compartment)
• Veh stop fuse 34 15a
• Vehicle speed sensor (vss) (on left rear of transfer case)
• Vehicle speed sig
• Vss hi
• Vss lo

DEFOGGERS

Defoggers Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Defoggers Wiring Diagram for Chevrolet TrailBlazer 2004:

• (except xuv)
• (xuv)
• (xuv) (except xuv)
• A1 c2
• B11
• Bat
• Coil
• Computer data lines system
• Driver door module (ddm) (below driver door switch panel)
• Driver outside rearview mirror
• Egm 2 lgm 2 fuse 3 30a
• Except xuv
• Front passenger door module (fpdm) (below front passenger door switch panel)
• G401 (lower left "d" pillar)
• G402 (lower right "d" pillar)
• Grd
• Hot at all times
• Htr
• Hvac control module (center of dash)
• Liftgate module (except xuv) (center of liftgate) endgate module (xuv) (center of endgate)
• Nca
• Passenger outside rearview mirror
• R def
• Rear fuse block (below left rear seat)
• Rear window defogger grid
• S411
• S904
• S905
• S911
• Serial data
• Sply volt
• Tan
• Xuv

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Electronic Suspension Wiring Diagram for Chevrolet TrailBlazer 2004:

• (i/p harn, 8.5 cm from c100 breakout)
• 4.2l
• 4wd fuse 15a
• 5.3l
• Air suspension compressor assembly (except xl: behind right rear wheelwell, on frame rail, xl : on left rear frame rail, near spare tire)
• Air suspension inflator switch (xl: on left side of cargo area, on trim panel, except xl: on right side of cargo area, on trim panel)
• B11
• Battery
• Control
• Ecas fuse 30a
• G305 (on outside of left frame rail, near fuel tank)
• Ground
• Hot at all times
• Hot in run
• Ign 3
• Instrument panel cluster
• Led signal
• Left rear air suspension sensor (on frame rail, near left rear suspension arm)
• On/off
• Powertrain control module (4.2l: on upper left side of eng) (5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• Red
• Right rear air suspension sensor (on frame rail, near right rear suspension arm)
• S117
• S306
• Sensor ret
• Sensor sig
• Speed sens
• Tan
• Transmissions system
• Underhood fuse block (on left side of engine compt)
• Vss

ENGINE PERFORMANCE

4.2L VIN S

4.2L VIN S, Engine Performance Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Engine Performance Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2004:

• 4wd low sig
• 5 volt ref
• A/c compr rel
• A/c press sens
• Accelerator pedal position sensor (above accelerator pedal)
• Air conditioning system
• Air pump relay
• Anti lock brakes system
• App sens 1 sig
• App sens 2 sig
• B10
• Battery
• Body control module (bcm) (beneath left rear seat)
• Cc on sw input
• Cls 2 data
• Cool fan clutch
• Cooling fan sp
• Cooling fans system
• Crank voltage
• Cruise control system
• Data link connector (on bottom left side of dash)
• Eng spd sig out
• F14
• Fuel tank press
• Fuel tank pressure sensor (top left rear of fuel tank)
• Hot at all times
• Hot in accy, run or start
• Hot in run & start
• Iat sens sig
• Ign 0 fuse 47 10a
• Ign 0 input
• Ign 1 volt
• Ign e fuse 22 10a
• Instrument cluster system
• Instrument panel cluster
• Intake air temperature sensor (in air intake duct, top right of engine)
• Lo ref
• Low ref
• Malfunction indicator lamp
• Mil ctrl
• Pcm b fuse 10 20a
• Pnk
• Pnp sw input
• Powertrain control module (upper left side of engine)
• Prim fuel lvl
• Rear fuse block
• Res/acc sw
• S232 (i/p harn, near breakout to steering column)
• S239
• S320
• Set/cruise sw
• Sp205
• Starting/ charging system
• Stop lamp volt
• Strt enable rel
• Tan
• Tcc rel sw sig
• Tcc/brake switch (above brake pedal, on bracket)
• Theft deterrent control module (in steering column, on lock cylinder)
• Transmission controls (transfer case circuit)
• Underhood fuse block
• Vss
• Vss signal out
• W/ immob
• W/ immobilizer
• W/o immob
• W/o immobilizer

4.2L VIN S, Engine Performance Wiring Diagram (2 of 5) for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Engine Performance Wiring Diagram (2 of 5) for Chevrolet TrailBlazer 2004:

• A11
• Air fuse 56 60a
• Air sol fuse 54 15a
• Air sol relay
• D11
• E11
• Eng i fuse 26 10a
• Engine oil pressure switch (right side of engine block)
• Evaporative emission canister purge solenoid (on throttle body)
• Evaporative emission canister vent solenoid (at rear of fuel tank)
• F/pmp relay
• Fuel pump/ & sender assembly (in fuel tank)
• G107 (lower left side of engine)
• G305 (on outside of left frame rail, near fuel tank)
• Hot at all times
• Hot in run & start
• Nca
• Pcm b fuse 10 20a
• Pnk
• Red
• Secondary air injection pump
• Secondary air injection pump relay
• Secondary air injection solenoid
• Under- hood fuse block
• Vehicle speed sensor (left rear of transfer case)

4.2L VIN S, Engine Performance Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Engine Performance Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2004:

• 1310
• (left rear of engine block) crankshaft position sensor
• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• 3-2 shift sol
• 5v ref
• Anti lock brakes system
• Cam pos sol hi
• Camshaft actuator solenoid assembly (right front of cylinder head)
• Ckp sens sig
• Deliv torque sig
• Ect sens sig
• Engine coolant temperature sensor (left front of engine block)
• Evap can prg ctl
• Evap can vent
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• G108 (lower left side of engine)
• Gfd cyc sig
• Ground powertrain control module (upper left side of engine)
• H02 hi sig b1 s2
• H02s hi sig b1 s1
• H02s lo sig b1 s2
• Heated oxygen sensor 1 (on exhaust manifold, right side of engine)
• Heated oxygen sensor 2 (downstream of catalytic converter)
• Ho2s htr lo b1 s1
• Ho2s htr lo b1 s2
• Ho2s lo sig b1 s1
• Hot in run & start
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 ctrl
• Ic 5 ctrl
• Ic 6 ctrl
• Injectors
• Low ref
• Manifold absolute pressure sensor (upper left side of engine)
• Map sens sig
• Nca
• O2 fuse 29
• Oil pres sw sig
• Pc sol high ctrl
• Pc sol low ctrl
• Pcm i fuse 28 15a
• Pnk
• Powertrain control module (upper left side of engine)
• Prim fuel pmp rel
• Req torque sig
• S104
• Starting/ charging system
• Tan
• Tcc pwm sol
• Tcc sol vlv ctrl
• Trns rg sw sig a
• Under- hood fuse block
• Vss high sig
• Vss low signal

4.2L VIN S, Engine Performance Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Engine Performance Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2004:

• (lower left side of transmission) park/neutral position switch
• 1-2 shift solenoid
• 2-3 shift solenoid
• 3-2 shift solenoid
• Automatic transmission
• Automatic transmission fluid
• C10
• Ctrl
• D10
• D2 sw
• D3 sw
• D4 sw
• E10
• F10
• G108 (lower left side of engine)
• G109 (lower left side of engine)
• Gnd
• Ign
• Ignition coils
• Lo sw
• Nca
• Pnk
• Pnk a
• Pressure control solenoid
• Red
• Rev sw
• Solenoid tcc pmw red
• Spark plug
• Tan
• Tcc solenoid red
• Temperature sensor
• Under- hood fuse block
• Under- hood junction block
• Valve

4.2L VIN S, Engine Performance Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, Engine Performance Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2004:

• 839
• (not used)
• 12v ref
• 5v ref
• Air sol relay
• Camshaft position sensor (right front of cylinder head)
• Charging system
• Cooling fans system
• Cpm sens sig
• Damping l/d sig
• Gen turn on sig
• Hot in run & start
• Ign 1 voltage
• Knock sensor 1 (front) (lower left front of engine block)
• Knock sensor 2 (rear) (lower left rear of engine block)
• Ks 1 sig
• Ks 2 sig
• Low oil press sw
• Low ref
• Pnk
• Powertrain control module (upper left side of engine)
• Red
• Tac fuse 23 10a
• Tac motor
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tfp sw sig a
• Tfp sw sig b
• Tfp sw sig c
• Tft sens sig
• Throttle body (throttle position sensor) (on throttle body)
• Tp sens 1 sig
• Tp sens 2 sig
• Trs sig b
• Trs sig c
• Trs sig p
• Under- hood fuse block

5.3L VIN P

5.3L VIN P, Engine Performance Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Engine Performance Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2004:

• (engine harness)
• (right rear of engine) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c press +5v
• A/c system
• Abs system
• Batt volt
• C12
• Ckp 12v ref
• Ckp sig
• Cls 2 data
• Cmp low ref
• Cmp sig
• Computer data lines system
• Cooling fans system
• D12
• Ect sig
• Engine coolant temperature sensor (left front of engine block, near generator)
• Fan clutch
• Ftp +5v
• G108 (lower left side of engine)
• Gnd
• Ho2s hi 1,1
• Ho2s hi 1,2
• Ho2s hi 2,1
• Ho2s hi 2,2
• Ho2s lo 1,1
• Ho2s lo 1,2
• Ho2s lo 2,1
• Ho2s lo 2,2
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign 0 fuse 47 10a
• Ign 0 volt
• Ign 1 volt
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj a fuse 55 15a
• Inj b fuse 56 15a
• Injectors
• Ks 1 signal
• Ks 2 signal
• Low ref
• Map +5v
• Map low ref
• O2a fuse 53 15a
• O2b fuse 54 15a
• Pcm b fuse 10 20a
• Pnk
• Powertrain control module (lower left front of engine)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Rear fuse block (below left rear seat)
• Red
• Req torq sig
• S100
• S101
• S102
• S320
• Serial data
• Start relay
• Starting/ charging system
• Tan
• Tcc/brk sig
• Tft low ref
• Underhood fuse block (left side of engine compt)

5.3L VIN P, Engine Performance Wiring Diagram (2 of 5) for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Engine Performance Wiring Diagram (2 of 5) for Chevrolet TrailBlazer 2004:

• (chassis harness) s359
• Camshaft position sensor (top rear of engine block)
• F/pmp relay
• Fuel pump & sender assembly (inside fuel tank)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• G305 (on left frame rail, near fuel tank)
• Heated oxygen sensor (bank 1 sensor 1) (left exhaust pipe, ahead of converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exhaust pipe, behind converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exhaust pipe, ahead of converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exhaust pipe, behind converter)
• Hot at all times
• Knock sensor 1
• Knock sensor 2
• Nca
• Park/ neutral position switch (on lower left side of trans- mission)
• Pcm b fuse 10 20a
• Pnk
• Red
• S101
• S306
• Tan
• Underhood fuse block (left side of engine compt)

5.3L VIN P, Engine Performance Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Engine Performance Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2004:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Engine oil pressure (eop) sensor
• Evaporative emission (evap) canister purge solenoid (left side of engine block)
• Evaporative emission canister vent solenoid (at rear of fuel tank)
• Fluid temp sensor
• Fuel tank pressure sensor (top left rear of fuel tank)
• Manifold absolute pressure sensor (on top of engine)
• Pnk
• Pressure control solenoid
• Red
• Rev
• Tan
• Tcc pwm sol
• Tcc sol
• Vehicle speed sensor (left rear of transfer case)

5.3L VIN P, Engine Performance Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Engine Performance Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2004:

• (above accelerator pedal) accelerator pedal position sensor
• App sens 1
• App sens 2
• B10
• Canister fuse 15 10a
• Cruise control
• Cruise control system
• Cruise on
• Data
• E12
• Exterior lights system
• G108 (lower left side of engine)
• Ground
• Hot at all times
• Hot in run or start
• Iat
• Ign 1 volt
• Intake air temperature (iat)/ mass airflow (maf) sensor (in air intake duct)
• Low ref
• Maf
• Pnk
• R/a input
• Rear fuse block (below left rear seat)
• Red
• Ref low
• S/c input
• S101
• St/lp fuse 12 15a
• Stop- lamp switch (top of brake pedal bracket)
• Stp lp in
• Tac cntrl
• Tac ctrl
• Tac fuse 23 15a
• Tan
• Throttle actuator control module (lower left front of engine)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of engine compt)
• Veh stop fuse 34 15a

5.3L VIN P, Engine Performance Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2004

List of elements for 5.3L VIN P, Engine Performance Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2004:

• (ignition coil harness)
• (lower left side of engine) g109
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low
• A/c clu rly
• A/c press sens
• A/c system
• A12
• Anti-lock brakes system
• Cmp 12v ref
• Cool fan spd
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Ctrl
• Delivered torq
• Eng i fuse 26 10a
• Engine speed
• Engine speed signal
• Evap purge
• Evap vent ctrl
• Fuel lev sig
• Fuel press sig
• G108 (lower left side of engine)
• Gen field
• Gen on sig
• Gnd
• Ho2s htr 1,1
• Ho2s low 1,2
• Ho2s low 2,1
• Ho2s low 2,2
• Hot in run & start
• Hot in start
• Iat low ref
• Iat sig
• Ign
• Ign ctrl 1
• Ign ctrl 2
• Ign ctrl 3
• Ign ctrl 4
• Ign ctrl 5
• Ign ctrl 6
• Ign ctrl 7
• Ign ctrl 8
• Ign e fuse 22 10a
• Ignition coils
• Instrument cluster system
• Instrument panel cluster
• Low ref
• Low ref bank 1
• Low ref bank 2
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm i fuse 28 10a
• Pmp rly ctrl
• Pnk
• Powertrain control module (lower left front of engine)
• Press sens sig
• Prnd c sig
• Red
• Ref lo
• S101
• S108
• S109
• S118
• S119
• S128
• S129
• S239
• Spark plug
• Starting/ charging system
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmission system (transfer case circuit)
• Underhood fuse block (left side of engine compt)
• Vss high sig
• Vss low sig
• Vss out

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Back-up Lamps Wiring Diagram for Chevrolet TrailBlazer 2004:

• 4.2l
• 5.3l
• A9 c1
• B/u lmp volt
• B12
• B13
• B13 c4
• B2 c1
• Backup fuse 27 15a
• Backup lamp
• Battery
• Body control module (bcm) (beneath left rear seat on rear fuse block)
• C3 b4
• G108 (lower left side of engine)
• G401 (lower left "d" pillar)
• G402 (lower right "d" pillar)
• Hot at all times
• Hot in run or start
• Left taillamp circuit board
• Mirrors system (automatic day/ night mirror)
• Nca
• Park/ neutral position switch
• Park/neutral position switch (on left side of transmission, above fluid pan)
• Pnk
• Powertrain control module (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Rear fuse block (below left rear seat)
• Right taillamp circuit board
• S401
• S402
• Ser data
• Serial data
• Sp205 (behind left of dash, near headlamp switch connector)
• Tbc 5 fuse 32 10a
• Tr sw a
• Tr sw b
• Tr sw c
• Tr sw p
• Trailer connector
• Trlr b/u fuse 4 10a
• Under- hood fuse block (on left side of engine compt)

Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004:

• (left side of rear frame crossmember) g403
• 4.2l
• 5.3l
• A a
• A10
• A14
• B g
• B gmc, olds
• Back-up lamps circuit
• Body control module (bcm) (beneath left rear seat on rear fuse block)
• Buick only
• C3 e5
• Chevy, buick a
• D10
• Elek brk fuse 19 30a
• Except buick
• F park fuse 37 10a
• G102 (rear of underhood fuse block)
• G103 (on left side of radiator support)
• G107 (lower left side of engine)
• G201 (right front of lower console)
• Hazard switch
• Headlamp switch
• Hot at all times
• Hot in run and start
• Ign e fuse 22 10a
• Instrument panel cluster (ipc)
• Left
• Left cornering lamp
• Left front marker lamp
• Left front park/ turn signal lamp b g
• Lt turn sig
• Nca
• Park lamp relay 30
• Park lamps (buick only)
• Pnk
• Powertrain control module (pcm) (on upper left side of engine)
• Prk lmp on
• Prk lmp rly
• Rear fuse block (below left rear seat)
• Red
• Right
• Right cornering lamp
• Right front marker lamp
• Right front park/ turn signal lamp
• Rt turn sig
• S103
• S104
• S106
• S107
• S211
• S227
• S239
• Sp201 (lower right front of lower console)
• Tan
• Throttle actuator control module (attached to throttle shaft)
• To tr park fuse 42 (diagram 2 0f 2)
• Trailer connector
• Trailer fuse 32 30a
• Trl l trn fuse 51 10a
• Trl r trn fuse 50 10a
• Turn signal/ multi- function switch
• Under- hood fuse block (on left side of engine compt)
• Underhood fuse block (on left side of engine compt)

Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004:

• (chevy, olds, buick)
• (gmc)
• (license lamp harn)
• Battery
• C1 d3
• Center high mount stop lamp (chmsl)
• D xuv
• Driver door module (ddm) (below driver door switch panel)
• Driver outside rearview mirror (w/ mirror turn signal indicator)
• Except xuv c
• Flash fuse 52 25a
• From a f park fuse 37 (diagram 1 0f 2)
• Front passenger door module (fpdm) (below passenger door switch panel)
• G201 (right front of lower console)
• G302 (lower left "b" pillar)
• G401 (lower left "d" pillar)
• G402 (lower right "d" pillar)
• Ground
• Hazard sw
• Hot at all times
• Left clearance lamps
• Left taillamp circuit board
• License lamps
• Lr lamp volt
• Lr park fuse 14 10a
• Lt trn sig voltage
• Lt turn fuse 38 10a
• Lt turn sig
• Mirror lt turn sig
• Mirror rt turn sig
• Nca
• Passenger outside rearview mirror (w/ mirror turn signal indicator)
• Rear fuse block (below left rear seat)
• Right clearance lamps
• Right taillamp circuit board
• Rr lamp volt
• Rr park fuse 17 10a
• Rt trn sig voltage
• Rt turn fuse 43 10a
• Rt turn sig
• S312
• S322
• S360
• S401
• S402
• S902
• S909
• S912
• Sp201 (lower right front of lower console)
• Special editions only
• St/lp fuse 12 25a
• Stoplamp sw
• Stoplamp switch
• Tan
• Tr park fuse 42 10a
• Turn signal/hazard flasher module (behind lower left side of dash)
• Underhood fuse block (on left side of engine compt)
• Veh chmsl fuse 16 10a
• Veh stop fuse 34 15a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (1 of 6) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (chevy, buick)
• (not used)
• (olds, gmc)
• (on lower left side of eng) g109
• (w/ all wheel drive)
• (w/ driver information center display)
• (w/ high pressure headlamp washer)
• (w/ premium performance enhanced audio speaker system)
• (w/ wiring provisions)
• 4.2l
• 5.3l
• A/c low pressure switch
• A12
• A18
• Amplifier ground shield
• Bare
• Battery
• Buick
• C10
• C304 a8
• Coolant bypass valve (w/ long wheelbase)
• Cooling fan
• D10
• Data link connector
• Digital radio receiver (if equipped)
• E10
• F10
• G101 (left side of underhood compt, near front of underhood fuse block)
• G102 (left side of underhood compt, near rear of underhood fuse block)
• G103 (left front of eng compt, on left side of radiator support)
• G104 (on underside of hood, near underhood compt lamp)
• G105 (under hood compt, on firewall, near i/p harn pass-through)
• G106 (on eng side of left front wheel well)
• G109 (on lower left side of engine)
• G110 (on lower left side of engine)
• Hazard lamp switch
• Headlamp dimmer switch
• Headlamp washer fluid pump
• Horn assembly
• Hvac module
• 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 key alarm switch
• Inflatable restraint sensing and diagnostic module (sdm)
• Instrument panel cluster (ipc)
• Onstar ground shield
• Radio
• Radio ground shield
• Rear window washer fluid pump
• Right cornering lamp (if equipped)
• Right front fog lamp
• Right front marker lamp
• Right front park lamp
• Right front park/turn signal lamp
• Right front turn signal lamp
• Right headlamp
• Right headlamp leveling actuator (if equipped)
• S103 (forward lamp harn, 8 cm from the rear washer pump motor breakout)
• S110
• S113 (forward lamp harn, 20 cm from windshield washer pump breakout, toward eng cooling fan breakout
• S128
• S129
• S202 (i/p harn, 16.5 cm from steering column connector breakout, toward dlc breakout)
• S227
• Tan
• Transfer case shift control module
• Turn signal/ multifunction switch
• Underhood fuse block (on left side of eng compt)
• W/ front and side, driver and passenger inflatable restraint system seat)
• W/ gps1
• Windshield washer fluid level switch
• Windshield washer fluid pump
• Windshield wiper motor
• Windshield wiper/ washer switch

Ground Distribution Wiring Diagram (2 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (2 of 6) for Chevrolet TrailBlazer 2004:

• (except xuv) c3
• (w/ automatic temperature control)
• (w/ custom console roof interior)
• (w/ long wheelbase except xuv)
• (w/ moisture sensitive pulse windshield wiper system)
• (w/ rear seat enter- tainment package)
• (xuv) c3
• A11
• B11
• Bare
• Body control module (bcm)
• Breakout for c700 toward g302)
• Cargo lamp
• Digital video disc (dvd) player
• Driver lumbar adjuster switch
• Driver memory seat module (w/ memory)
• Driver seat adjuster switch
• Driver seat belt switch
• Driver vanity mirror lamp
• Dvd ground shield
• Except xuv
• G302 (on lower left "b" pillar)
• Garage door opener (if equipped)
• Inside air temepature sensor assembly
• Inside rearview mirror
• Left center courtesy reading lamp
• Left clearance lamp
• Left courtesy/ reading lamp
• Left courtesy/ reading lamp (w/ long wheelbase except xuv)
• Left quarter glass switch
• Left rear courtesy reading lamp
• Left rear window switch
• Lock relay 18
• Long wheelbase
• Nca
• Onstar ground shield 1
• Outside moisture sensor
• Power roof switch
• Rap relay 22 (w/ long wheelbase)
• Rear fuse block (below left rear seat)
• Right clearance lamp
• Right courtesy reading lamp (second row)
• Right courtesy/ reading lamp (w/ long wheelbase except xuv)
• Right front courtesy reading lamp
• Right quarter glass switch
• Right rear door latch assembly
• Right vanity mirror lamp
• S311 (under driver 4.5 cm from lumbar switch breakout toward body connector)
• S312 (main headliner harn, 80 cm from c308 breakout, toward front courtesy reading lamp)
• S322 (headliner harn, 16 cm from isrvm breakout, sun shade toward right mirror lamp)
• S350 (headliner harn, 3.5 cm from left quarterglass breakout, toward courtesy lamp breakout)
• Seat belt switch
• Short wheelbase
• Sunroof switch (w/ sun- roof)
• Unlock relay 24
• Voice recorder (w/ recall recorder convenience)
• W/ deluxe seat front bucket seat
• Xuv

Ground Distribution Wiring Diagram (3 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (3 of 6) for Chevrolet TrailBlazer 2004:

• (chevrolet, gmc w/ traction control)
• (oldsmobile w/ traction control)
• (w/ automatic temperature controls)
• (w/ manual temperature controls)
• (w/ uk6)
• (w/ xuv)
• (w/o uk6)
• 4wd
• A16
• Automatic transmission shift lock actuator
• Auxiliary blower motor (short wheelbase & xuv w/ manual temperature control)
• Auxiliary hvac control module
• Auxiliary mode actuator
• Auxiliary power outlet (w/ gmc conversion name plt)
• Auxiliary rsa/hvac control module
• B16
• Blower motor assembly (w/ automatic temperature controls)
• Blower motor control module
• Blower motor resistor assembly
• C201
• Cigar lighter
• Console auxiliary power outlet
• Data link connector
• Electronic adjustable pedal (eap) relay (if equipped)
• Front auxiliary power outlet
• G201 (ground splice pack, near right front of lower console)
• Headlamp switch
• Hvac control module
• Ignition lock solenoid
• Inflatable restraint steering wheel module coil
• Instrument panel cluster (ipc)
• Inverting driver module
• Lower left steering wheel control switch assembly
• Lower right steering wheel control switch assembly
• Nca
• Radio
• Rear wiper/ washer switch
• Recirulation actuator (w/ manual temperature controls)
• S211 (i/p harn, 16 cm from sp 201 breakout, toward dlc)
• S226 (ground circuit splice, in steering column)
• S307 (console harn)
• Splice pack sp201 (lower right front of lower console)
• Steering wheel
• Traction control switch
• Transfer case control switch (if equipped)
• Transfer case shift control module
• Turn/ signal hazard flasher module
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• W/ automatic temperature controls
• W/ long wheelbase
• W/ manual temperature controls
• W/ short wheelbase

Ground Distribution Wiring Diagram (4 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (4 of 6) for Chevrolet TrailBlazer 2004:

• (chevy)
• (not used)
• (olds, gm)
• (w/ deluxe front bucket seats)
• (w/ vehicle communication system)
• (w/ wiring provisions)
• 4.2l
• 5.3l
• A/c compressor clutch assembly
• Bare
• Brake fluid level switch
• Buick
• Eap relay 49
• Electronic brake control module (ebcm)
• F/pump relay 41
• Fan relay 45
• Front axle actuator (if equipped)
• Front passenger door module (fpdm)
• G107 (on lower
• G108 (on lower
• G303 (on lower right "b" pillar)
• G304 (on outside of left frame rail, near electronic brake control module)
• Hdm relay 46
• Ignition 1 relay 58
• Intake air temperature (iat)/mass air flow (maf) sensor
• Left cornering lamp (if equipped)
• Left front fog lamp
• Left front marker lamp
• Left front park lamp
• Left front park/turn signal lamp
• Left front turn signal lamp
• Left headlamp
• Left headlamp leveling actuator (if equipped)
• Left side of eng)
• Nca
• Nca l
• Onstar microphone ground shield 2
• Park/ neutral position (pnp) switch
• Passenger lumbar adjuster switch
• Passenger seat adjuster switch
• Powertrain control module (pcm)
• Right rear door latch assembly
• Right rear window switch
• S101 (5.3l)
• S107 (forward lamp harn, 4.5 cm from left signal breakout, toward left headlamp breakout)
• S303 (5 cm from main harn, breakout for c700, toward g302)
• S317 (under driver 4.5 cm from lumbar switch breakout toward body connector)
• Secondary air injection (air) solenoid
• Throttle actuator control (tac) module
• Underhood fuse block (on left side of eng compt)
• Vehicle communication interface module (vcim)
• W/ power adjustable pedal

Ground Distribution Wiring Diagram (5 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (5 of 6) for Chevrolet TrailBlazer 2004:

• Air suspension compressor assembly (w/ air auto level control)
• C2 d
• Fuel pump & sender assembly
• G305 (on outside of left frame rail, near fuel tank)
• G306 (on body panel, rear of left rear door)
• Gmc
• Left backup lamp
• Left midgate latch
• Left quarter glass switch (w/ long wheelbase)
• Midgate latch release switch
• Midglass motor
• Nca
• Power roof module
• Right backup lamp
• Right midgate latch
• Right quarter glass switch (w/ long wheelbase)
• S306
• S351
• S354
• S355
• Secondary air injection (air) pump (short wheelbase w/ 4.2l)
• Sunroof module (w/ long wheelbase)
• Theft deterrent alarm (w/ immobilizer)
• W/ long wheelbase except xuv
• Xuv

Ground Distribution Wiring Diagram (6 of 6) for Chevrolet TrailBlazer 2004

List of elements for Ground Distribution Wiring Diagram (6 of 6) for Chevrolet TrailBlazer 2004:

• xuv
• (w/ right rear window electric defogger)
• Audio amplifier
• Auxiliary blower motor control processor (w/ long wheelbase)
• Cargo lamp
• Center high mounted stoplamp (chmsl)
• Coil
• Endgate latch relay
• Endgate module (lgm)
• Endgate window regulator
• Except xuv
• G401 (on lower left "d" pillar)
• G402 (on lower right "d" pillar)
• G403 (on left side of rear frame crossmember)
• Left license lamp
• Left rear cargo lamp
• Left tail lamp circuit board
• Left taillamp circuit board
• Liftgate module (lgm)
• Nca
• Rear auxiliary power outlet
• Rear window defogger grid
• Rear window wiper motor
• Right license lamp
• Right rear cargo lamp
• Right tail lamp circuit board
• Right taillamp circuit board
• S401
• S401 (body harn, 7.5 cm from g402 breakout) (short wheelbase) (body harn, 13 cm from g402 breakout) (long wheelbase)
• S402
• S901 (in liftgate)
• S902 (license lamp harness)
• S902 (license plate harness)
• S905
• S911 (lower center of endgate)
• S912
• Trailer connector
• W/ long wheelbase
• W/ premium performance enhanced audio speaker system)
• W/ short wheelbase

HEADLIGHTS

Headlights Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Headlights Wiring Diagram for Chevrolet TrailBlazer 2004:

• (near rear of underhood fuse block)
• (right front of lower console)
• (right front of lower console) splice pack sp201
• A c2
• A12
• Ambient light sensor (top center of dash)
• Ambient light/ sunload sensor assembly (top center of dash)
• Auto
• Automatic a/c
• B10
• B14
• B14 c4
• B3 c2
• Beam select
• Body control module (bcm) (below left rear seat)
• C12 c2
• C2 c2
• C2 d1
• C4 f1
• C4 f2
• Coils fuse 14 10a
• Drl defeat
• E1 c4
• E11
• E2 c4
• E6 c1
• F10
• Flash to pass
• Fog lp fuse 11 10a
• Foglamp relay 39
• Front fog lamp
• Front fog lamp switch
• G102
• G103 (left side of radiator support)
• G107 (lower left side of engine)
• G108 (lower left side of engine)
• G201
• Hdlmp on sig
• Hdlp washer switch
• Head
• Head- lamp on
• Headlamp driver module relay 46
• Headlamp hi-beam headlamp relay 43
• Headlamp switch
• Hot at all times
• Ind ctrl
• Interior lights system
• Left front fog lamp
• Left head- lamp
• Left high beam headlamp
• Left low beam headlamp
• Low ref
• Lt high hdlp fuse 5 10a
• Lt low hdlp fuse 6 10a
• Manual a/c
• Nca
• Park
• Pnk
• Rear fuse block (below left rear seat)
• Right front fog lamp
• Right head- lamp
• Right high beam headlamp
• Right low beam headlamp
• Rly ctrl
• Rt hi hdlp fuse 2 10a
• Rt low hdlp fuse 3 10a
• S103
• S107
• S113
• S227
• Sense sig
• Sw on input
• Tan
• Turn signal/ multifunction switch
• Underhood fuse block (left side of eng compt)
• Wipe sw sig
• Wiper/ washer system

HORN

Horn Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Horn Wiring Diagram for Chevrolet TrailBlazer 2004:

• "a" note horn
• "f" note horn
• Body control module (beneath left rear seat, on rear fuse block)
• E12
• F4 c4
• G103 (left front of eng compt, on left side radiator support)
• Horn assembly
• Horn fuse 21 15a
• Horn relay
• Horn relay control
• Horn switch
• Hot at all times
• S113
• Turn signal/ multifunction switch
• Underhood fuse block (on left side of engine compt)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Instrument Cluster Wiring Diagram for Chevrolet TrailBlazer 2004:

• (i/p harn, 8.5 cm from c100 breakout) s117
• 12v
• 2761 (or 720)
• 4.2l
• 5 volt ref
• 5.3l
• A10
• A11
• A12
• A15
• Abs ind
• Air bag ind
• Air suspension compressor assembly
• B10
• B11
• B12
• Batt
• Battery ind
• Brake ind
• Change eng oil ind
• Check gauges ind
• Class 2
• Class 2 data
• Computer data lines system
• Cruise ind
• Data
• Dic
• Dic fuel sig
• Dic set/reset
• Dic sw sig
• Dic toggle sw
• Driver seat belt switch (in left front seat belt buckle)
• Ect sens sig
• Eng speed
• Eng speed sig
• Engine controls system
• Engine coolant temperature sensor (left front of eng block)
• Engine oil pressure sensor (5.3l) (at top rear of eng block)
• Engine oil pressure switch (4.2l) (right side of engine block)
• Exterior lights system
• Fuel
• Fuel gauge
• Fuel level
• Fuel pump & sender assembly (inside fuel tank)
• G102 (near underhood fuse block)
• G103 (on left side of radiator support)
• G201 (at lower
• G302 (lower left "b" pillar)
• Ground
• High beam ind
• Hot at all times
• Hot in run or start
• Ign 1
• Ign e fuse 22 10a
• Illumination (8 bulbs)
• Inflatable restraint sensing and diagnostic module (below rear of center console)
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Interior lights system
• Ipc/dic fuse 24 10a
• Left turn
• Left turn ind
• Lo washer fluid
• Logic
• Low fuel ind
• Low ref
• Malfunction indicator lamp (service engine soon)
• Mil ctrl
• Nca
• Odometer
• Oil gauge
• Oil pres sig
• Oil press sw
• Personal- ization
• Pnk
• Powertrain control module (pcm) (4.2l: on upper left side of eng) (5.3l: near lower left front of engine)
• Prnd321
• Radio
• Reduce eng power ind
• Right front of lower console)
• Right turn
• Right turn ind
• S113
• S202
• S226
• S239
• S359
• Seat belt ind
• Seat belt switch
• Security ind
• Select
• Service 4wd/awd ind
• Shift ind
• Sp201
• Speedometer
• Steering wheel control assembly
• Tachometer
• Tailgate ajar ind
• Temp gauge
• Trip
• Underhood fuse block (left side of engine compt)
• Volts gauge
• Vss
• Windshield washer fluid level switch (in windshield washer fluid reservoir)

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004:

• (not used)
• A12 c2
• Ajar
• Anti- theft system
• B17
• B18
• Batt +
• Body control module (beneath left rear seat, on rear fuse block)
• C1 a12
• C2 b10
• C4 b3
• Cargo lamp
• Courtesy
• Courtesy lamp switch
• Data
• Dome
• Door ajar input
• Driver door jamb switch
• Driver door module (below door switch panel)
• End gate dome
• Endgate drop handle
• Endgate drop switch
• Endgate module
• Endgate swing handle
• Endgate swing switch
• Except xuv
• F10 c2
• F11
• F12
• Front passenger door jamb switch
• Front passenger door module (below door switch panel)
• G201
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• G401 (lower left "d" pillar)
• Headlamp switch
• Hot at all times
• Interior lamp defeat switch
• Lamp cntrl
• Lamp on
• Lamp supp
• Left rear door jamb
• Lift gate ajar input
• Lift glass ajar input
• Liftgate ajar switch
• Liftgate latch assembly
• Liftgate module
• Lmp defeat
• Long wheelbase
• Low ref
• Lower left ajar input
• Lower left endgate actuator
• Lr dr sig
• Nca
• Reading
• Rear fuse block (below left rear seat)
• Right rear door jamb
• Rr dr sig
• S901
• S914 (left side of endgate)
• S915 (center of endgate)
• Serial data class 2
• Sp201 (right front of lower console)
• Sp205 (behind left side of dash)
• Sp306 (in body harn, under right rear seat)
• Tan
• Tbc 3 fuse 4 10a
• Tbc 4 fuse 40 10a
• To courtesy/ reading lamps (diagram 2 of 2)
• Upper left ajar input
• Upper left endgate actuator
• Upper right ajar input
• Upper right endgate actuator
• W/ special edition
• Xuv
• Xuv & short wheelbase

Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004:

• (headliner harness, 17 cm from the left sunshade mirror lamp breakout) s331
• (headliner harness, 26 cm from the left front dome/reading lamp, toward the left sunshade mirror lamp) s390
• Cargo lamp
• Courtesy
• Except xuv
• From rear fuse block (diagram 1 of 2)
• G302 (on lower left "b" pillar)
• G401 (lower left "d" pillar)
• G402 (lower right "d" pillar)
• Left cargo lamp
• Left center courtesy/ reading lamp
• Left front courtesy/ reading lamp
• Left front vanity mirror lamp
• Left rear courtesy/ reading lamp
• Left rear reading lamp
• Reading
• Right cargo lamp
• Right center courtesy/ reading lamp
• Right front courtesy/ reading lamp
• Right front vanity mirror lamp
• Right rear courtesy/ reading lamp
• Right rear reading lamp
• S312
• S332
• S333 (in headliner harn, 13 cm from breakout to cargo lamp)
• S350
• S353
• S391 (in headliner harn, 6.5 cm from breakout to left quarterglass)
• S401
• S402
• Xuv

Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004:

• (headliner harn, 25 cm from breakout to sunshade mirror lamp) s329
• (overhead console harness) s330
• (w/ rear audio cntrls)
• (w/ rear audio cntrls) (w/o rear audio cntrls)
• (w/o rear audio cntrls)
• Auxiliary hvac control module
• B c1
• B1 a1
• B1 b16
• B13
• B9 c1
• Batt +
• Body control module (beneath left rear seat, on rear fuse block)
• C1 c
• C4 b2
• Computer data lines system
• Data
• Front auxiliary blower motor switch
• G201 (right front of lower console)
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• Garage door opener
• Headlamp switch
• Hot at all times
• Hvac control module
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Left quarter glass switch
• Left rear window switch
• Long wheel base
• Long wheelbase
• Lower left
• Lower right
• Nca
• Power roof switch (xuv)
• Pwm
• Pwm ctrl
• Radio
• Rear fuse block (below left rear seat)
• Rear window wiper/ washer switch
• Right quarter glass switch
• Right rear window switch
• S211
• S230 (dash harness, 5 cm from the sp201 breakout, toward the i/p auxiliary power breakout)
• S302
• S303
• S307
• S322
• S323
• S332
• Short wheel base
• Short wheelbase & xuv
• Sp201 (right front of lower console)
• Steering wheel control switches
• Sunroof switch
• Tbc 2 fuse 7 10a
• Tbc 5 fuse 32 10a
• Traction control switch (gmc, chevy)
• Traction control switch (olds, buick)
• Transfer case shift control switch (4wd)
• Upper left
• Upper right
• Voice recorder

Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004:

• (behind left side of dash) sp205
• 2wd
• 4 hi
• 4 lo
• 5v ref
• A10
• Afwd
• Ahl/ drl defeat indicator
• B10
• B14
• Body control module (beneath left rear seat, on rear fuse block)
• C1 l
• C2 c
• C2 c2
• C2 e
• Data
• Dim input
• Driver door module (below driver door switch panel)
• Driver memory seat module
• E11
• Electronic brake control module (on inner left frame rail beside transmission)
• Except xuv
• Front fog lamp indicator
• G201 (right front of lower console)
• Gmc, chevy
• Head lamp on indicator
• Headlamp switch
• Illum
• Inverting driver module (in the center console)
• K c1
• Led dim
• Low ref
• Low trac ind
• Mem pwr
• Memory/ heated seat switch
• Nca
• Olds, buick
• Pnk
• Rear fuse block (below left rear seat)
• S307
• S346 (body harn, 5-15 cm from left front seat, toward c500)
• Sp201 (right front of lower console)
• Sp306 (in body harn, under right rear seat)
• Trac off ind
• Traction control switch
• Transfer case shift control module (behind lower left side of dash)
• Transfer case shift control switch
• Underhood fuse block (on left side of engine compt)
• W/ memory seats
• Xuv

MEMORY SYSTEMS

Adjustable Pedal Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Adjustable Pedal Wiring Diagram for Chevrolet TrailBlazer 2004:

• 5v ref
• Adj pedal fwd sig
• Adj pedal rwd sig
• Adj pedal sensor sig
• Aft
• B10
• Back up fuse 27 15a
• Bat (+)
• C1 e6
• C2 e7
• Class 2 serial data
• Computer data lines system
• Driver door module (below driver door switch panel)
• Driver memory seat module (below left front seat)
• Driver memory set switch
• Driver seat lumbar position sensor (forward/ rearward)
• Eap fuse 15a
• Eap relay
• Electronic adjustable pedals (eap) switch
• Electronic adjustable pedals assembly
• Electronic adjustable pedals relay (left side of dash, on pedal assembly)
• Exit
• Fore
• Fuse holder
• G108 (lower left side of engine)
• G201 (right front of lower console)
• Hot at all times
• Illum ctrl
• Low ref
• Lum horiz pos sen sig
• Mem 1
• Mem 2
• Memory 1 sw
• Memory 2 sw
• Nca
• Park/ neutral
• Park/neutral position (pnp) switch
• Pnk
• Red
• S101
• S211
• S304
• S305
• Splice pack sp201
• Tan
• Underhood fuse block (left side of engine compt)

Driver"s Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Driver"s Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2004:

• (in driver's seat 24 cm from seat module connector 2)
• (in driver's seat harn, 17 cm from seat module connector 2) s313
• 5v ref
• A10
• A11
• A12
• Adj pedal fwd sig
• Adj pedal rwd sig
• Adj pedal sensor sig
• Adjustable pedals circuit
• B10
• B11
• B12
• Bat (+)
• Batt (+)
• Battery (+) voltage
• C2 c1
• Class 2 data
• Class 2 serial data
• Computer data lines system
• D tan
• Driver door module (below driver door switch panel)
• Driver lumbar adjuster switch
• Driver memory seat module (below left front seat)
• Driver memory seat switch
• Driver seat adjuster switch
• Driver seat front position sensor
• Driver seat front vertical motor
• Driver seat horizontal motor
• Driver seat horizontal position sensor
• Driver seat lumbar horizontal motor
• Driver seat lumbar position sensor (forward/ rearward)
• Driver seat rear position sensor
• Driver seat rear vertical motor
• Driver seat recline motor
• Driver seat recline position sensor
• Drvr htd seat low ref
• Drvr htd seat them sig
• Egm/dsm fuse 23 10a
• Except xuv
• Exit
• F red
• Frt dwn
• Frt up
• Frt vert dn sw sig
• Frt vert mtr dn ctrl
• Frt vert mtr pos sen
• Frt vert mtr up ctrl
• Frt vert up sw sig
• Fwd
• G302 (on lower left "b" pillar)
• Gnd
• Heated seat pwr
• Horiz fwd sw sig
• Horiz mtr fwd ctrl
• Horiz mtr pos sen sig
• Horiz mtr rwd ctrl
• Horiz rwd sw sig
• Hot at all times
• Illum ctrl
• Lgm/dsm fuse 6 10a
• Low ref
• Lum fwd sw sig
• Lum horiz pos sen sig
• Lum mtr fwd ctrl
• Lum mtr rwd ctrl
• Lum rwd sw sig
• Mem 1
• Mem 2
• Memory 1 sw
• Memory 2 sw
• Pass htd seat back
• Pass htd seat ctrl
• Pass htd seat cushion
• Pass htd seat low ref
• Pass htd seat them sig
• Pnk
• Rear fuse block
• Rear vert dn sw sig
• Rear vert up sw sig
• Rec fwd
• Rec rwd
• Recline fwd sw sig
• Recline mtr fwd ctrl
• Recline mtr pos sen sig
• Recline mtr rwd ctrl
• Recline rwd sw sig
• Red
• Rr dwn
• Rr up
• Rr vert mtr dn ctrl
• Rr vert mtr up ctrl
• Rwd
• S304
• S305
• S311
• S314
• Seats circuit breaker 8 30a
• Seats system (heated seats)
• Tan
• Vert mtr pos sen sig
• Xuv

Memory Mirrors Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Memory Mirrors Wiring Diagram for Chevrolet TrailBlazer 2004:

• 5v ref
• Bat (+)
• Class 2 serial data
• Computer data lines system
• Down
• Down sig
• Driver
• Driver door module (below driver door switch panel)
• Driver memory seat switch
• Driver outside rearview mirror
• Driver sig
• Exit
• Front passenger door module (below front passenger door switch panel)
• Horiz pos sig
• Horizontal
• Ign voltage
• Illum ctrl
• Left
• Left sig
• Low ref
• Mem
• Memory 1 sw
• Memory 2 sw
• Mir common
• Mir down ctrl
• Mir right ctrl
• Outside rearview mirror switch
• Pass
• Passenger sig
• Pnk
• Red
• Right
• Right sig
• Tan
• Up sig
• Vert pos sig
• Vertical

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (1 of 7) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• (i/p harn, 18 cm (7in) from the a/t pnk
• (not used)
• (olds & buick)
• (short wheelbase w/ manual temperature control)
• (w/ short wheelbase or xuv)
• 1-2 shift solenoid (1-2 ss) valve
• 2-3 shift solenoid (2-3 ss) valve
• 3-2 shift solenoid 3-2 ss) valve
• 4wd fuse 48 15a
• 5.3l
• A11
• A18
• Abs fuse 33 60a
• Acc
• Air suppression compressor assembly (w/ auto air level control)
• Atc fuse 8 30a
• Automatic transmission
• Automatic transmission shift lever
• Auxiliary hvac control mode actuator
• Auxiliary mode actuator
• B11
• Battery
• Battery fuse 48 125 a
• Body control module (bcm)
• C175
• Crank fuse 17 10a
• Defrost actuator
• Electronic brake control module
• Electronic brake control module (ebcm)
• Elek brk fuse 19 30a
• F11
• Flat- wire
• Front axle actuator
• Fusible link (8 ga-red)
• Generator
• Hvac control module
• Hvac control module (w/ manual temperature control)
• Hvac fuse 44 30a
• Hvac i fuse 39 10a
• Ign a fuse 34 40a
• Ign o fuse 47 10a
• Ignition switch
• Left mode temperature actuator
• Lock
• Mode actuator
• Ohms
• Pnk
• Powertrain control module (pcm)
• Rear fuse block
• Recirculation actuator
• Red
• Right air temperature actuator
• Run
• S133
• S309
• Shift lever connector breakout) s320
• Start
• Starter
• Starter relay
• Tbc ig fuse 50 3a
• To blower fuse 35 (diagram 2 of 7)
• To brake fuse 51 (diagram 2 of 7)
• To rear fuse block lgm/dsm fuse 6 (diagram 4 of 7)
• Torque converter clutch (tcc) solenoid valve
• Torque converter clutch pulse width modulation (tcc pwm) solenoid valve
• Traction control switch
• Traction control switch (w/ automatic temperature control)
• Trailer connector
• Trailer fuse 32 30a
• Transfer case encoder motor
• Transfer case shift control module
• Transfer case shift control switch
• Turn/signal multifunction switch
• Under- hood fuse block
• Underhood fuse block

Power Distribution Wiring Diagram (2 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (2 of 7) for Chevrolet TrailBlazer 2004:

• (1)
• (2)
• (2) w/o traction control powertrain management
• (4.2l)
• (from rear l fuse block (diagram 4 of 7)
• (w/ gmc conversion name plt)
• 4.2l
• 5.3l
• A20
• Acc
• Air fuse 56 60a
• Air suspension compressor assembly
• Aux pwr 1 fuse 46 20a
• Aux pwr 2 fuse 15 20a (xuv)
• B10
• B15
• Blower fuse 35 40a
• Blower motor control module
• Blower motor resistor assembly
• Body control module (bcm)
• Brake fuse 51 10a
• C11
• Center high mounted stop lamp (chmsl)
• Cigar fuse 13 20a
• Cigar lighter
• Console auxiliary power outlet
• Control powertrain management
• Data link connector (dlc)
• E10
• Ecas fuse 1 30a
• Flash fuse 52 25a
• From b elek brk fuse 19 (diagram 1 of 7)
• From hvac i c fuse 39 (diagram 1 of 7)
• Front auxiliary power outlet
• Frt wpr fuse 33 25a
• G201 (ground splice pack, near right front of lower console)
• G402 (lower right "d" pillar)
• Gmc
• Ign b fuse 36 40a
• Ignition switch
• Instrument panel cluster (ipc)
• Ipc/dic fuse 24 10a
• Left tail- lamp assembly
• Lock
• Nca
• Others
• Outside moisture sensor
• Pnk
• Powertrain control module (pcm)
• Rain fuse 29 10a
• Rear auxiliary power outlet (xuv)
• Rear fuse block
• Red
• Right tail- lamp assembly
• Run
• S250
• S307
• S402
• Secondary air injection (air) pump relay
• Splice pack sp201
• St/lp fuse 12 25a
• Start
• Stoplamp switch
• Tbc acc fuse 31 3a
• Tbc run fuse 52 3a
• Throttle actuator control module
• To pcm b fuse 10 (diagram 3 of 7)
• To underhood fuse block (diagram 3 of 7)
• Turn/ signal hazard flasher module
• Under- hood fuse block
• Underhood fuse block
• Veh chmsl fuse 16 10a
• Veh stop fuse 34 15a
• W/ auto hvac
• W/ manual hvac
• W/ traction (1)
• Windshield wiper motor

Power Distribution Wiring Diagram (3 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (3 of 7) for Chevrolet TrailBlazer 2004:

• (4.2l)
• (4.2l) (5.3l)
• (not used)
• 4.2l
• 5.3l
• Air sol fuse 54 15a
• Air sol relay
• Automatic transmission shift lever
• Backup fuse 27 15a
• Body control module (bcm)
• Btsi fuse 25 10a
• C12
• C304
• Canister vent fuse 15 10a
• Coils fuse 14 10a
• E10 f8
• E12
• Eap relay
• Eng 1 fuse 26 10a
• Evaporative emission (evap) canister purge solenoid
• Evaporative emission (evap) canister vent solenoid
• F/pmp relay 41
• Fan fuse 20 10a
• Fan relay 45
• From flash fuse 52 d (diagram 2 of 7)
• From ignition switch (diagram 2 of 7)
• From pcm i fuse 28 f (diagram 3 of 7)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Hdlp-hi relay 43
• Headlamp driver module (hdm) relay 46
• Headlights system
• Heated oxygen sensor (ho2s) sensor 1
• Heated oxygen sensor (ho2s) sensor 2
• Ign e fuse 22 (diagram 4 of 7)
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Inflatable restraint sensing and diagnostic module (sdm)
• Left headlamp
• Lt hi hdlp fuse 5 10a
• Lt low hdlp fuse 6 10a
• Nca
• O2 fuse 29 10a
• Park/neutral position (pnp) switch
• Pcm b fuse 10 20a
• Pcm i fuse 28 15a 10a
• Pnk
• Powertrain control module (pcm)
• Right headlamp
• Rt hi hdlp fuse 2 10a
• Rt low hdlp fuse 3 10a
• S104
• S220
• Secondary air injector dump relay
• Sir fuse 18 10a
• Stop lamp switch
• Tac fuse 23 10a
• Tbc 1 fuse 31 10a
• Theft deterrent alarm (if equipped)
• To ignition relay 58 (diagram 6 of 7)
• To o2 fuse 29 (diagram 3 of 7)
• Trailer connector
• Trlr b/u fuse 4 10a
• Under- hood fuse block

Power Distribution Wiring Diagram (4 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (4 of 7) for Chevrolet TrailBlazer 2004:

• (except xuv) (xuv)
• (i/p harn, above dash left lower panel, 11 cm from steering column toward dlc) s239
• (w/ rear e
• (w/ rear f
• (w/ rear radio ctrl) (others)
• (w/o rear d
• A16 a2
• A19
• All except manual a/c temperature control
• Amp fuse 11 20a
• Auxiliary hvac control module
• Body control module (bcm)
• C10
• Cobra intention module (dealer installed)
• Communication system)
• D10
• D12
• Ddm fuse 10 10a
• Digital radio receiver
• Digital video disc (dvd) player
• Driver door module (ddm)
• Driver memory seat module (w/ deluxe front bucket seat, w/ 6-way power seat adjuster)
• E12
• From backup fuse 27 g (diagram 3 of 7)
• From hvac b fuse 36 h (diagram 4 of 7)
• From underhood fuse block, battery fuse 48 (diagram 1 of 7)
• Front passenger door module (fpdm)
• Garage door opener
• Headlamp leveling switch (if equipped)
• Hvac b fuse 36 10a
• Hvac control module
• Ign e fuse 22 10a
• Inclination sensor (if equipped)
• Inside rearview mirror
• Instrument panel cluster (ipc)
• Inverting driver module
• Left headlamp leveling actuator (if equipped)
• Left rear window switch
• Lgm/dsm fuse 19 10a (except xuv)
• Liftgate module (lgm)
• Long wheelbase except xuv
• Lt doors circuit breaker 2 25a
• Oh batt/onstar fuse 27 fuse 26 10a
• Olds w/ traction control powertrain management
• Park/ neutral position (pnp) switch
• Pdm fuse 12 10a
• Pnk
• Radio
• Radio amplifier (w/ premium radio)
• Radio fuse 41 15a
• Rear fuse block
• Red
• Right headlamp leveling actuator (if equipped)
• Right rear window switch
• Rt doors circuit breaker 1 25a
• S340 (overhead console harn)
• S341
• S374
• Seat enter- tainment package and garage door opener)
• Seat enter- tainment package, w/ garage door opener)
• Seat enter- tainment package, w/o garage door opener)
• Short wheelbase & xuv w/ rear radio control
• Stop lamp switch
• Tbc ign 1 fuse 16 10a
• To aux pwr 1 fuse 46 (diagram 2 of 7)
• To hvac b fuse 36 (diagram 4 of 7)
• To ign 1 relay 58 (diagram 6 of 7) (5.3l only)
• To pcm 1 relay 28 (diagram 6 of 7) (5.3l only)
• To rear fog lamp relay 45 (diagram 5 of 7)
• Traction control switch
• Turn/ signal mult- function switch
• Under- hood fuse block
• Vehicle communication interface module (w/ vehicle
• Voice recorder (w/ recorder recall con- venience)

Power Distribution Wiring Diagram (5 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (5 of 7) for Chevrolet TrailBlazer 2004:

• (buick, chev, olds)
• (chev, buick)
• (diagram 4 of 7)
• (diagram 5 of 7)
• (gmc)
• (gmc, olds)
• (license lamp harn) s909
• (not used)
• (others)
• (others) b
• (w/ long wheelbase) h
• (w/ short wheelbase) g
• A10
• A11
• A12
• Auxiliary blower motor
• Auxiliary blower motor control processor
• B d
• B10
• B13
• B17
• Blower motor auxiliary fuse 30a
• Body control module (bcm)
• D (gmc)
• D10
• Driver door module (ddm)
• Exterior lights system
• F park fuse 37 10a
• Flat wire
• From amp fuse 11 i
• From amp fuse 11 j
• From tbc 4 fuse 40 (diagram 5 of 7)
• Front passenger door module (fpdm)
• G h
• G302 (on lower left "b" pillar)
• Instrument panel cluster (ipc)
• Left clearance lamp
• Left front marker lamp
• Left front park/turn signal lamp
• Left license lamp
• Left quarter glass switch
• Left taillamp assembly
• Left taillamp circuit board
• Left taillamp circuit board (chevy)
• Lgm 2 fuse 3 30a (except xuv)
• Liftgate module (lgm)
• Lr park fuse 14 10a
• Lt turn fuse 38 10a
• Nca
• Others
• Park lp relay 50
• Power tops system
• Rear fuse block
• Rear window wiper motor
• Retained accessory power (rap) relay 22
• Right clearance lamp
• Right front marker lamp
• Right front park/turn signal lamp
• Right license lamp
• Right quarter glass switch
• Right taillamp assembly
• Right taillamp circuit board
• Rr fog fuse 5 10a (except xuv)
• Rr fog lp relay 45 (except xuv)
• Rr hvac fuse 13 30a (except xuv)
• Rr park fuse 17 10a
• Rr wiper circuit breaker 9 15a (except xuv)
• Rt turn fuse 43 10a
• S301
• S302
• S360
• Sunroof fuse 20 fuse 28 20a
• Sunroof module
• Tan
• Tbc 2 fuse 7 10a
• Tbc 3 fuse 4 10a
• Tbc 4 fuse 40 10a
• Tbc 5 fuse 32 10a
• To rr wiper circuit breaker 9 (diagram 5 of 7)
• To vent wdo fuse (diagram 5 of 7)
• Tr park fuse 42 10a
• Trailer connector
• Trailer connectors
• Trl l trn fuse 51 10a
• Trl r trn fuse 50 10a
• Turn/signal hazard flasher module
• Turn/signal multifunction switch
• Under- hood fuse block
• Underhood fuse block
• Vent wdo fuse 20 20a
• W/ long wheelbase (except xuv)
• W/ long wheelbase except xuv

Power Distribution Wiring Diagram (6 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (6 of 7) for Chevrolet TrailBlazer 2004:

• (5.3l)
• (diagram 4 of 7)
• C12
• C2 c12
• D12
• E12
• Eng 1 fuse 26 10a
• Etc fuse 23 15a
• Evaporative emission (evap) canister purge solenoid)
• From ign e fuse 22 (diagram 4 of 7)
• From pcm b fuse 10 (diagram 3 of 7)
• From tbc ign 1 fuse 16 o
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• G107 (on lower left side of eng)
• Heated oxygen sensor (h02s) bank 1 sensor 1
• Heated oxygen sensor (h02s) bank 1 sensor 2
• Heated oxygen sensor (h02s) bank 2 sensor 1
• Heated oxygen sensor (h02s) bank 2 sensor 2
• Ign 1 relay 58 (5.3l only)
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Inj a fuse 55 15a
• Inj b fuse 56 15a
• Intake air temperature (iat) mass air flow (maf) sensor
• Nca
• O2 a fuse 53 15a
• O2 b fuse 54 15a
• Pcm 1 fuse 28 10a
• Pnk
• Powertrain control module (pcm)
• S100
• S102
• S108
• S109
• Throttle actuator control (tac) module
• To seats circuit breaker 8 (diagram 7 of 7)
• Under- hood fuse block

Power Distribution Wiring Diagram (7 of 7) for Chevrolet TrailBlazer 2004

List of elements for Power Distribution Wiring Diagram (7 of 7) for Chevrolet TrailBlazer 2004:

• (diagram 6 of 7)
• (diagram 7 of 7)
• Driver lumbar adjuster switch
• Driver seat adjuster switch
• Egm #2 fuse 3 30a
• Egm/dsm fuse 23 10a
• Endgate latch relay
• Endgate module (egm)
• Endgate window regulator
• Endglass reg circuit breaker 9 30a
• From ign 1 relay 58 s
• From roof fuse 25 t
• Memory seat module driver
• Midgate reg circuit breaker 13 25a
• Midglass motor
• Passenger lumbar adjuster switch
• Passenger seat adjuster switch
• Power latch fuse 19 15a
• Power roof module
• Rear fuse block
• Rear window wiper motor
• Roof fuse 25 10a
• Roof reg circuit breaker 6 30a
• S318 (driver's seat main harn, 7cm from body conn breakout, toward seat back connector)
• S319 passenger's seat main harn, 7cm from body conn breakout, toward seat back connector)
• S910 (lower center of endgate, in harness)
• Seats circuit breaker 8 30a
• To endglass reg circuit breaker 9 (diagram 7 of 7)
• W/ memory driver seat
• W/o memory driver seat

POWER DOOR LOCKS

Power Door Locks Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Power Door Locks Wiring Diagram for Chevrolet TrailBlazer 2004:

• (except xuv)
• (xuv)
• A12
• A13
• B10
• Batt
• Body control module (beneath left rear seat)
• C10
• C4 a13
• C4 a5
• D10
• Ddm fuse 10a
• Door ajar
• Driver door jamb switch
• Driver door lock actuator
• Driver door lock switch
• Driver door module (below driver door switch panel)
• Endgate module
• F10
• Front passenger door jamb switch
• Front passenger door lock actuator
• Front passenger door module (below front pass door switch panel)
• G302 (lower left "b" pillar)
• G302 (on lower left "b" pillar)
• G303 (lower right "b" pillar)
• G303 (on right "b" pillar)
• Ground
• Hot at all times
• Latch relay
• Left rear door jamb switch
• Left rear door lock actuator
• Liftgate door lock actuator
• Liftgate module
• Lock
• Lock ctrl
• Lock relay
• Lock relay 18
• Locks fuse 21 10a
• Low ref
• Lr door ajar
• Lt doors c.b. 2 25a
• Nca
• Passenger door lock switch
• Pdm fuse 10a
• Power
• Rear fuse block (below left rear seat)
• Right rear door jamb switch
• Right rear door lock actuator
• Rr door ajar
• Rt doors c.b. 1 25a
• S302
• S303
• Serial data
• Sp205 (lower right front of lower console)
• Sp306 (body harn, under right rear seat)
• Tan
• Trunk, tailgate, fuel doors system
• Unlock
• Unlock ctrl
• Unlock relay
• Unlock relay 24

POWER MIRRORS

Automatic Day/Night Mirror Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Automatic Day/Night Mirror Wiring Diagram for Chevrolet TrailBlazer 2004:

• Air temp sensor
• Ambient air temperature sensor (on left center of radiator support)
• B12
• B6 c2
• Back up lamp voltage output c3
• Back up voltage
• Body control module (beneath left rear seat, on rear fuse block)
• Computer data lines system
• E10
• E12
• G302 (on lower left "b" pillar)
• Ground
• Hot in run and start
• Ign 1
• Ign e fuse 22 10a
• Inside rearview mirror
• Low ref
• Nca
• On/off
• Photo sensor
• Pnk
• Rear fuse block (below left rear seat)
• S239
• S322
• Serial data
• Underhood fuse block (left side of engine compt)

Power Mirrors Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Power Mirrors Wiring Diagram for Chevrolet TrailBlazer 2004:

• 5v ref
• Battery
• C10
• Class 2 serial data
• Computer data lines system
• D10
• Ddm fuse 10 10a
• Down
• Down sig
• Driver
• Driver door module (below driver door panel switch)
• Driver outside rearview mirror
• Driver sig
• Front passenger door module (below front passenger door switch panel)
• G302 (lower left "b" pillar)
• G303 (lower right "b" pillar)
• Ground
• Horiz pos sig
• Horizontal
• Hot at all times
• Ign voltage
• Left
• Left sig
• Low ref
• Lt doors circuit breaker 2 25a
• Mir common
• Mir down ctrl
• Mir right ctrl
• Outside rearview mirror switch
• Pass
• Passenger outside rearview mirror
• Passenger sig
• Pdm fuse 12 10a
• Pnk
• Rear fuse block (below left rear seat)
• Red
• Right
• Right sig
• Rt doors circuit breaker 1 25a
• S302
• S303
• Tan
• Up sig
• Vert pos sig
• Vertical

POWER SEATS

8-Way Adjustable Power Seat Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for 8-Way Adjustable Power Seat Wiring Diagram for Chevrolet TrailBlazer 2004:

• Driver seat adjuster switch
• Driver seat front vertical motor
• Driver seat horizontal motor
• Driver seat rear vertical motor
• Driver seat recline motor
• Front passenger seat adjuster switch
• Fwd
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• Hot at all times
• Passenger seat front vertical motor
• Passenger seat horizontal motor
• Passenger seat rear vertical motor
• Passenger seat recline motor
• Rear fuse block (below left rear seat)
• Rwd
• S302
• S303
• S318
• S319
• Seats circuit breaker 30a
• Tan

Driver Heated Seat Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Driver Heated Seat Wiring Diagram for Chevrolet TrailBlazer 2004:

• (on lower left "b" pillar) g302
• A11
• A12
• B10
• B11
• B12
• Back only ind
• Back only indicator
• Back only select
• Bat (+)
• Batt
• Batt (+)
• Batt + voltage
• C2 a5
• C2 c1
• C2 c10
• C2 d3
• Class 2 serial data
• Computer data lines system
• Ddm fuse 10a
• Driver back heated seat element
• Driver cushion heated seat element
• Driver door module (below driver door switch panel)
• Driver memory seat module (below left front seat)
• Egm/dsm fuse 6 10a (xuv)
• Except xuv
• G302 (on lower left "b" pillar)
• Gnd
• Ground
• Heat mode select
• Heated seat pwr
• Heated seat therm sig
• Hi heat ind
• Hi heat indicator
• Hot at all times
• Lgm/dsm fuse 19 10a (except xuv)
• Low heat ind
• Low heat indicator
• Low ref
• Lt doors c.b. 2 25a
• Med heat ind
• Med heat indicator
• Nca
• Rear fuse block (below left rear seat)
• S309
• S311
• Seats circuit breaker 8 30a
• Serial data
• Xuv

Lumbar Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Lumbar Wiring Diagram for Chevrolet TrailBlazer 2004:

• Driver lumbar adjuster switch
• Driver seat lumbar horizontal motor
• Fwd
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• Hot at all times
• Passenger lumbar adjuster switch
• Passenger seat lumbar horizontal motor
• Pnk
• Rear fuse block (below left rear seat)
• Rwd
• S302
• S303
• S318
• S319
• Seats circuit breaker 30a

Passenger"s Heated Seat Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Passenger"s Heated Seat Wiring Diagram for Chevrolet TrailBlazer 2004:

• A10
• B12
• Back only ind
• Back only indicator
• Back only select
• Bat (+)
• Batt
• Batt (+)
• Batt + voltage
• C2 a3
• C2 a5
• C2 d3
• Computer data lines system
• D10
• Driver memory seat module (below left front seat)
• Egm/dsm fuse 23 10a (xuv)
• Element ctrl
• Except xuv
• Front passenger back heated seat element
• Front passenger cushion heated seat element
• Front passenger door module (below front pass door switch panel)
• G302 (on lower left "b" pillar)
• G303 (on right "b" pillar)
• Gnd
• Ground
• Heat mode select
• Heated seat pwr
• Hi heat ind
• Hi heat indicator
• Hot at all times
• Lgm/dsm fuse 6 10a (except xuv)
• Low heat ind
• Low heat indicator
• Low ref
• Med heat ind
• Med heat indicator
• Nca
• Pdm fuse 10a
• Pnk
• Rear fuse block (below left rear seat)
• Rt doors c.b. 1 25a
• S311
• S316
• Seats circuit breaker 8 30a
• Serial data
• Tan
• Temp sens sig
• Xuv

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Power Top/Sunroof Wiring Diagram for Chevrolet TrailBlazer 2004:

• A12
• A12 hot with rap energized c3
• Battery positive voltage
• Body control module (bcm) (beneath left rear seat, on rear fuse block)
• Close
• G302 (on lower left "b" pillar)
• G306 (on body panel, rear of left rear door)
• Ground
• Hot at all times
• Long- wheel base
• Nca
• Open
• Rap relay 22 (longwheel base)
• Rear fuse block (below left rear seat)
• S302
• Short- wheel base
• Sun roof motor (above headliner, at rear of sun roof assembly)
• Sun roof switch
• Sun roof switch close signal
• Sun roof switch low reference
• Sun roof switch open signal
• Sunroof fuse 28 20a
• Vent wdo fuse 20 20a

POWER WINDOWS

Power Windows Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Power Windows Wiring Diagram for Chevrolet TrailBlazer 2004:

• (body harn, 5-15 cm from breakout for tan right front seat) s347
• (lower left "b" pillar)
• A6 nca
• B5 nca
• B6 nca
• B7 nca
• B8 nca
• B9 nca
• Battery
• Body computer module (bcm) (beneath left rear seat, on rear fuse block)
• Class 2 data
• Ddm fuse 10 10a
• Down
• Down input
• Down output
• Down signal output
• Driver door module (below drivers door switch panel)
• Driver memory seat module
• Drivers window motor
• Drivers window switch
• Front pass window switch
• Front passenger door module (below front passenger door switch panel)
• Front passenger window motor
• G302
• G303 (lower right "b" pillar)
• Ground
• Hot at all times
• Left rear window motor
• Left rear window switch
• Lockout indicator
• Lockout switch
• Lr down sig
• Lr lockout control
• Lr up sig
• Lt door circuit breaker 2 25a
• Motor down control
• Motor up control
• Passenger memory seat module
• Rear fuse block (below left rear seat)
• Right rear window control
• Right rear window motor
• Right rear window switch
• Rr down sig
• Rr lockout control
• Rr up sig
• Rt door circuit breaker 1 25a
• Splice pack sp205 (behind left side of dash)
• Splice pack sp306 (body harn, under right rear seat)
• Switch power
• Switch pwr
• Tan
• Up input
• Up output
• Up signal output
• W/ memory seats
• Window dn
• Window up

Rear Quarter Windows Wiring Diagram, Long Wheel Base for Chevrolet TrailBlazer 2004

List of elements for Rear Quarter Windows Wiring Diagram, Long Wheel Base for Chevrolet TrailBlazer 2004:

• A12
• Body control module (bcm) (below left rear seat, on rear fuse block)
• Close
• G302 (lower left "b" pillar)
• G306 (rear of left rear door)
• Hot at all times
• Left quarter glass switch
• Nca
• Open
• Rap relay 22
• Rear fuse block (below left rear seat)
• Right quarter glass switch
• S301
• S302
• Vent wdo fuse 20a

RADIO

Base Radio Wiring Diagram, with Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Base Radio Wiring Diagram, with Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004:

• (near the right front of the lower console) g201
• A10
• A11
• A12
• A16
• A4 (swb & xuv)
• Antenna
• Auxiliary hvac control module
• B10
• B11
• B12
• B16 (lwb except xuv)
• B6 b6
• Bare
• Digital radio antenna
• Digital radio receiver
• Drain wire
• Engine controls system
• G102 (left side of underhood compartment, near rear of underhood fuse block)
• Ground
• Hot at all times
• Hvac b fuse 36 10a
• L aud sig +
• L aud sig -
• Lf out +
• Lf out -
• Lr low level audio sig +
• Lr low level audio sig -
• Lr out +
• Lr out -
• Lr speaker out +
• Lr speaker out -
• Nca
• R aud sig +
• Radio
• Radio fuse 41 15a
• Radio on sig
• Rear fuse block (below left rear seat)
• Remote l sig
• Remote out -
• Rf out +
• Rf out -
• Rr low level audio sig +
• Rr low level audio sig -
• Rr out +
• Rr out -
• Rr speaker out +
• Rr speaker out -
• S202
• S307
• Serial data
• Sp201 (at lower right front of lower console)
• Sp205 (below left of dash, near headlamp switch connector)
• Tan
• Vehicle communication interface module (long wheelbase, right rear floor pan) (short wheelbase, under right rear seat)
• Vss

Base Radio Wiring Diagram, with Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Base Radio Wiring Diagram, with Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004:

• Body control module (beneath left rear seat, on rear fuse block)
• Inflatable restraint steering wheel module coil
• Lf door speaker
• Lf door tweeter speaker
• Lr door speaker
• Nca
• Pnk
• Radio control signal
• Rf door speaker
• Rf door tweeter speaker
• Rr door speaker
• Seek down
• Seek prog
• Seek up
• Seek voice
• Serial data
• Source down
• Source up
• Steering wheel
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Volume down
• Volume up
• Wiper/ washer system

Base Radio Wiring Diagram, without Rear Seat Audio for Chevrolet TrailBlazer 2004

List of elements for Base Radio Wiring Diagram, without Rear Seat Audio for Chevrolet TrailBlazer 2004:

• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Antenna
• B10
• B11
• B12
• B13
• B14
• B15
• Body control module (beneath left rear seat, on rear fuse block)
• G102 (left side of underhood compartment, near rear of underhood fuse block)
• Ground
• Hot at all times
• Inflatable restraint steering wheel module coil
• Lf door speaker
• Lf door tweeter speaker
• Lf out +
• Lf out -
• Lr door speaker
• Lr out +
• Lr out -
• Nca
• Pnk
• Radio
• Radio control signal
• Radio fuse 41 15a
• Rear fuse block (below left rear seat)
• Rf door speaker
• Rf door tweeter speaker
• Rf out +
• Rf out -
• Rr door speaker
• Rr out +
• Rr out -
• Seek down
• Seek prog
• Seek up
• Seek voice
• Serial data
• Source down
• Source up
• Sp205 (behind left of dash, near headlamp switch)
• Steering wheel
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Volume down
• Volume up
• Wiper/ washer system

DVD Player/Voice Recorder Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for DVD Player/Voice Recorder Wiring Diagram for Chevrolet TrailBlazer 2004:

• Audio common
• B(+)
• Bare
• C221
• Cl 2 ser data
• Computer data lines system
• Delete
• Digital radio receiver
• Digital video disk (dvd) player
• Drain wire
• G302 (on lower left "b" pillar)
• Ground
• Hot at all times
• Interior lights system
• L audio sig (+)
• Logic
• Oh batt/ onstar fuse 27 10a
• Play
• R audio sig (+)
• Radio
• Rear fuse block (below left rear seat)
• Rec
• S322
• S332
• Voice recorder

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004:

• (near the right front of the lower console) g201
• A10
• A11
• A12
• A16
• A4 (swb & xuv)
• Antenna
• Auxiliary hvac control module
• B10
• B11
• B12
• B16 (lwb except xuv)
• B6 b6
• Bare
• Digital radio antenna
• Digital radio receiver
• Drain wire
• Engine controls system
• G102 (left side of underhood compartment, near rear of underhood fuse block)
• Ground
• Hot at all times
• Hvac b fuse 36 10a
• Illum dim
• Interior lights system (early production)
• L aud sig +
• L aud sig -
• Lf out +
• Lf out -
• Lr low level audio sig +
• Lr low level audio sig -
• Lr out +
• Lr out -
• Lr speaker out +
• Lr speaker out -
• Mute signal
• Nca
• Pnk
• R aud sig +
• Radio
• Radio fuse 41 15a
• Radio on sig
• Rear enable
• Rear fuse block (below left rear seat)
• Remote l sig
• Remote out -
• Rf out +
• Rf out -
• Rr low level audio sig +
• Rr low level audio sig -
• Rr out +
• Rr out -
• Rr speaker out +
• Rr speaker out -
• S202
• S307
• Serial data
• Sp201 (at lower right front of lower console)
• Sp205 (below left of dash, near headlamp switch connector)
• Tan
• Vehicle communication interface module (long wheelbase, right rear floor pan) (short wheelbase, under right rear seat)
• Vss

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004:

• (lower right "d" pillar g402
• A a
• A10
• A11
• A12
• Amp fuse 11 20a
• Audio amplifier (behind right side panel of the rear compartment)
• B10
• B11
• B12
• Bare
• Body control module (beneath left rear seat, on rear fuse block)
• Drain wire
• G102 (near rear of underhood fuse block)
• G401 (lower left "d" pillar)
• Ground
• Hot at all times
• Inflatable restraint steering wheel module coil
• Left front door speaker
• Left front i/p speaker
• Left rear door speaker
• Lf low lev aud sig +
• Lf low lev aud sig -
• Lf mid spkr out +
• Lf mid spkr out -
• Lf spkr out +
• Lf spkr out -
• Long wheelbase
• Lr low lev aud sig +
• Lr low lev aud sig -
• Lr spkr out +
• Lr spkr out -
• Mute sig
• Nca
• Pnk
• Radio control signal
• Radio on sig
• Rear fuse block (beneath left rear seat)
• Rear seat aud enable sig
• Rf low lev aud sig +
• Rf low lev aud sig -
• Rf mid spkr out +
• Rf mid spkr out -
• Rf spkr out +
• Rf spkr out -
• Right front door speaker
• Right front i/p speaker
• Right rear door speaker
• Rr low lev aud sig +
• Rr low lev aud sig -
• Rr spkr out +
• Rr spkr out -
• S202
• S401
• S402
• Seek down
• Seek prog
• Seek up
• Seek voice
• Serial data
• Short wheelbase
• Source down
• Source up
• Steering wheel
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Volume down
• Volume up
• Wiper/ washer system

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 2) for Chevrolet TrailBlazer 2004:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• Bare
• Digital radio antenna
• Digital radio receiver
• Drain wire
• Engine controls system
• G102 (left side of underhood compartment, near rear of underhood fuse block)
• Ground
• Hot at all times
• Illum dim
• Interior lights system (early production)
• L aud sig +
• L aud sig -
• Lf out +
• Lf out -
• Lr out +
• Lr out -
• Mute signal
• Nca
• Pnk
• R aud sig +
• Radio
• Radio fuse 41 15a
• Radio on sig
• Rear enable
• Rear fuse block (below left rear seat)
• Remote l sig
• Remote out -
• Rf out +
• Rf out -
• Rr out +
• Rr out -
• S202
• Serial data
• Sp205 (below left of dash, near headlamp switch connector)
• Tan
• Vehicle communication interface module (long wheelbase, right rear floor pan) (short wheelbase, under right rear seat)
• Vss

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 2) for Chevrolet TrailBlazer 2004:

• (lower right "d" pillar g402
• A a
• A10
• A11
• A12
• Amp fuse 11 20a
• Audio amplifier (behind right side panel of the rear compartment)
• B10
• B11
• B12
• Bare
• Body control module (beneath left rear seat, on rear fuse block)
• Drain wire
• G102 (near rear of underhood fuse block)
• G401 (lower left "d" pillar)
• Ground
• Hot at all times
• Inflatable restraint steering wheel module coil
• Left front door speaker
• Left front i/p speaker
• Left rear door speaker
• Lf low lev aud sig +
• Lf low lev aud sig -
• Lf mid spkr out +
• Lf mid spkr out -
• Lf spkr out +
• Lf spkr out -
• Long wheelbase
• Lr low lev aud sig +
• Lr low lev aud sig -
• Lr spkr out +
• Lr spkr out -
• Mute sig
• Nca
• Pnk
• Radio control signal
• Radio on sig
• Rear fuse block (beneath left rear seat)
• Rear seat aud enable sig
• Rf low lev aud sig +
• Rf low lev aud sig -
• Rf mid spkr out +
• Rf mid spkr out -
• Rf spkr out +
• Rf spkr out -
• Right front door speaker
• Right front i/p speaker
• Right rear door speaker
• Rr low lev aud sig +
• Rr low lev aud sig -
• Rr spkr out +
• Rr spkr out -
• S202
• S401
• S402
• Seek down
• Seek prog
• Seek up
• Seek voice
• Serial data
• Short wheelbase
• Source down
• Source up
• Steering wheel
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Volume down
• Volume up
• Wiper/ washer system

Premium Sound Radio Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004

List of elements for Premium Sound Radio Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2004:

• (console harness)
• (near the right front of the lower console) g201
• A10
• A11
• A12
• A16
• A4 (swb & xuv)
• Antenna
• Auxiliary hvac control module
• B10
• B11
• B12
• B16 (lwb except xuv)
• B6 b6
• Bare
• C307
• Digital radio antenna
• Digital radio receiver
• Drain wire
• Engine controls system
• G102 (left side of underhood compartment, near rear of underhood fuse block)
• Ground
• Hot at all times
• Hvac b fuse 36 10a
• Illum dim
• Interior lights system (early production)
• L aud sig +
• L aud sig -
• Lf out +
• Lf out -
• Lr low level audio sig +
• Lr low level audio sig -
• Lr out +
• Lr out -
• Lr speaker out +
• Lr speaker out -
• Nca
• Not used
• R aud sig +
• Radio
• Radio fuse 41 15a
• Radio on sig
• Rear fuse block (below left rear seat)
• Remote l sig
• Remote out -
• Rf out +
• Rf out -
• Rr low level audio sig +
• Rr low level audio sig -
• Rr out +
• Rr out -
• Rr speaker out +
• Rr speaker out -
• S202
• S307
• Serial data
• Sp201 (at lower right front of lower console)
• Sp205 (below left of dash, near headlamp switch connector)
• Tan
• Vehicle communication interface module (long wheelbase, right rear floor pan) (short wheelbase, under right rear seat)
• Vss

Premium Sound Radio Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004

List of elements for Premium Sound Radio Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2004:

• (lower right "d" pillar g402
• A a
• A10
• A11
• A12
• Amp class 2 serial data
• Amp fuse 11 20a
• Audio amplifier (behind right side panel of the rear compartment)
• B10
• B11
• B12
• Bare
• Body control module (beneath left rear seat, on rear fuse block)
• Drain wire
• G102 (near rear of underhood fuse block)
• G401 (lower left "d" pillar)
• Ground
• Hot at all times
• Inflatable restraint steering wheel module coil
• Left front door speaker
• Left front i/p speaker
• Left rear door speaker
• Lf low lev aud sig +
• Lf low lev aud sig -
• Lf mid spkr out +
• Lf mid spkr out -
• Lf spkr out +
• Lf spkr out -
• Long wheelbase
• Lr spkr out +
• Lr spkr out -
• Nca
• Noise reduction microphone (in upper console)
• Pnk
• Radio control signal
• Rear fuse block (beneath left rear seat)
• Rf low lev aud sig +
• Rf low lev aud sig -
• Rf mid spkr out +
• Rf mid spkr out -
• Rf spkr out +
• Rf spkr out -
• Right front door speaker
• Right front i/p speaker
• Right rear door speaker
• Rr spkr out +
• Rr spkr out -
• S202
• S401
• S402
• Seek down
• Seek prog
• Seek up
• Seek voice
• Serial data
• Short wheelbase
• Source down
• Source up
• Sp306 (body harn, under right rear seat)
• Steering wheel
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Volume down
• Volume up
• Wiper/ washer system

SHIFT INTERLOCK

Ignition Lock Solenoid Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Ignition Lock Solenoid Wiring Diagram for Chevrolet TrailBlazer 2004:

• A/t shift lever (closed in park)
• G201
• Hot in acc, run & start
• Ign 0 fuse 47 10a
• Ignition lock cyl switch
• Ignition lock cylinder control actuator
• Pnk
• Rear fuse block (below left rear seat)
• S320
• Sp201 (right front of lower console)

Shift Interlock Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Shift Interlock Wiring Diagram for Chevrolet TrailBlazer 2004:

• (4.2l)
• (5.3l)
• A/t shift lever
• A/t shift lock
• A/t shift lock control solenoid
• Backup fuse 27 15a
• Btsi fuse 25 10a
• E10
• G201
• Hot in run & start
• Park lock solenoid
• Park/ neutral position (pnp) switch (on left side of transmission)
• Pnk
• S211
• Sp201 (right front of lower console)
• Stoplamp switch (above brake pedal, on bracket)
• Underhood fuse block (left side of engine compt)

STARTING/CHARGING

Charging Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Charging Wiring Diagram for Chevrolet TrailBlazer 2004:

• (4.2l)
• (4.2l: on upper left side of engine) (5.3l: near lower left front of engine) powertrain control module (pcm)
• (5.3l)
• 4.2l
• 5.3l
• Battery
• Battery voltage
• Charge indicator
• Class 2
• Class 2 data
• Field duty cycle sig
• Fusible link (8 ga- red)
• G101 (left side
• G106 (left front wheel well)
• G110 (on lower left side of engine)
• Generator
• Generator on signal
• Hot at all times
• Instrument panel cluster (ipc)
• Ipc/dic fuse 24 10a
• Not used
• Of engine compt)
• Red
• S110
• Sp205 (behind left side of i/p)
• Starter
• Under- hood fuse block (on left side of engine compt)
• Volts

Starting Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Starting Wiring Diagram for Chevrolet TrailBlazer 2004:

• (4.2l)
• (4.2l) (5.3l)
• (5.3l)
• 4.2l
• 4.2l only
• 5.3l
• A10
• A5 a5
• A8 a8
• Acc
• Batt
• Battery
• C1 c1
• C2 c1
• C2 c2
• Crank fuse 17 10a
• Crank sig req
• Crank volt
• F10 f10
• F11
• F6 a6
• F8 d8
• Fusible link (8 ga- red)
• G101 (left side of engine compt)
• G106 (left front wheel well)
• G110 (on lower left side of engine)
• Generator
• Hot in run or start
• Ign a fuse 34 40a
• Ign e fuse 22 10a
• Ignition switch
• Lock
• Off
• P/n
• Park/ neutral position (pnp) switch (on lower left side of transmission)
• Pnk
• Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Red
• Run
• S110
• Start
• Starter
• Starter relay 47
• Starter rly
• Under- hood fuse block (left side of engine compt)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Supplemental Restraints Wiring Diagram for Chevrolet TrailBlazer 2004:

• (near the rear of underhood fuse block) g102
• (on lower left b-pillar) g302
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• Air bag indicator
• Anti-theft system
• Bar
• C1 a1
• Case ground
• Class 2 serial data
• Data link connector (dlc) (partial) (on bottom left side of dash)
• Driver seat
• Ground
• High control
• Hot in on & start
• Ign
• Ignition
• Inflatable restraint i/p module
• Inflatable restraint sensing & diagnostic module (below rear of center console)
• Inflatable restraint steering wheel module
• Inflatable restraint steering wheel module coil
• Instrument panel cluster (ipc)
• Left electronic frontal sensor (efs) (left front of frame)
• Left front inflatable restraint side impact module (in left front seat back)
• Left inflatable restraint side impact sensor (in left front door)
• Left seat belt switch
• Low control
• Low reference
• Nca
• Pnk
• Right electronic frontal sensor (efs) (right front of frame)
• Right front inflatable restraint side impact module (in right front seat back)
• Right inflatable restraint side impact sensor (in right front door)
• S232 (in the i/p harness, 33.5 cm (13.2 in) before breakout to inflatable restraint sensing & diagnostic module near c304)
• S232 (w/immobilizer)
• Shorting
• Shorting bar
• Signal
• Solid state
• Sp205 (on lower left side of dash)
• Srs fuse 18 10a
• Stage 1
• Stage 2
• Tan
• Underhood fuse block (on left side of engine compt)
• Voltage

TRANSMISSION

A/T Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for A/T Wiring Diagram for Chevrolet TrailBlazer 2004:

• (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout)
• 1-2 shift red solenoid valve
• 2-3 shift red solenoid valve
• 3-2 shift red solenoid valve
• 4wd lo
• Automatic trans- mission fluid pressure manual valve position switch
• Automatic transmission
• Automatic transmission fluid temperature sensor
• Automatic transmission shift lever
• Battery
• Body control module (bcm) (beneath left rear seat)
• Class 2 data
• D2 c1
• D2 sw
• D3 sw
• D4 sw
• Data link connector (bottom left side of dash)
• Down (3-2)
• E3 c2
• Ect ref
• Ect sig
• Engine coolant temperature sensor (left front of engine block, near generator)
• F14
• F5 c1
• G108 (lower left side of engine)
• Ground
• Hot at all times
• Hot in accy, run or start
• Hot in run or start
• Ign 0 fuse 10a
• Ignition
• Ignition 1
• Ing e fuse 10a
• Instrument panel cluster (ipc)
• Lo sw
• Mil ind
• Park/neutral position switch (left side of transmission)
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pcs sol (hi)
• Pcs sol (lo)
• Pnk
• Powertrain control module (near lower left front of engine)
• Pressure control solenoid valve
• Prndl a in
• Prndl b in
• Prndl c in
• Prndl p in
• Rear fuse block (below left rear seat)
• Red
• Rev sw
• S101
• S232
• S239
• S320
• Serial data
• Service engine soon
• Solenoid
• Splice pack sp205 (behind left side of dash)
• Ss a (1-2)
• Ss b (2-3)
• Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror
• Tan
• Tcc
• Tcc pmw red
• Tcc pwm
• Tcc red
• Tfp sw a
• Tfp sw b
• Tfp sw c
• Tft ref
• Tft sig
• Theft deterent control module
• Throttle actuator control (tac) module
• Transfer case circuit (w/ 2-spd transfer case)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (on left rear of transfer case)
• Vss (hi)
• Vss (lo)
• W/ immob
• W/ immobilizer
• W/o immob
• W/o immobilizer

Transfer Case Wiring Diagram, 2 Speed for Chevrolet TrailBlazer 2004

List of elements for Transfer Case Wiring Diagram, 2 Speed for Chevrolet TrailBlazer 2004:

• (below left side of dash) data link connector
• (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout)
• (on lower left side of engine)
• +5v ref
• +8v ref
• 1.1k
• 2 hi
• 2 hi ind
• 2.2k
• 2wd
• 4 hi
• 4 hi ind
• 4 lo
• 4 lo ind
• 4.2l
• 4wd fuse 15a
• 4wd lo sig
• 5.1k
• 5.3l
• Afwd
• Afwd ind
• Atc fuse 25a
• Axle act
• Axle sw
• B11
• Battery
• Brake
• C2 a11
• Class 2 data
• E11
• E5 c3
• Encoder
• Encoder gnd
• Encoder p
• Front axle actuator (on inner flange of front axle)
• Front sig hi
• Front sig lo
• G102 (left side of underhood compt, near rear of underhood fuse block)
• G107
• G201
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Ing e fuse 10a
• Instrument panel cluster (ipc)
• Interior lights system
• Lock sol
• Logic
• Motor
• Motor ctrl a
• Motor ctrl b
• Neut
• Neutral
• Neutral ind
• Pnk
• Powertrain control module (4.2l: upper left side of engine) (5.3l: near lower left front of engine)
• Propshaft speed sensor (left front) (left front of transfer case)
• Propshaft speed sensor (right rear) (right rear of transfer case)
• Rear fuse block (below left rear seat)
• Rear sig hi
• Rear sig lo
• Red
• S202
• S232
• S239
• Service 4wd/ awd
• Sp201 (at lower right front of lower console)
• Splice pack sp205 (behind left side of dash)
• Sw sig
• Tan
• Tcc/brake switch, traction control switch, multi-function switch, headlamp leveling switch, rearview mirror
• Theft deterent control module
• Transfer case encoder motor (on top of transfer case)
• Transfer case shift control module (behind lower left side of dash)
• Transfer case shift control switch
• Under- hood fuse block (left side of engine compt)
• Underhood fuse block (left side of engine compt)
• W/ immobilizer

Transfer Case Wiring Diagram, Single Speed for Chevrolet TrailBlazer 2004

List of elements for Transfer Case Wiring Diagram, Single Speed for Chevrolet TrailBlazer 2004:

• (behind left side of dash) splice pack sp205
• (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout)
• (left side of underhood compt, near rear of underhood fuse block)
• +5v ref
• A11
• Atc fuse 25a
• B6 c2
• Battery
• Class 2 data
• Data link connector (on bottom left side of dash)
• Encoder
• Encoder gnd
• Encoder sig
• Front sig hi
• Front sig lo
• G102
• G201
• Ground
• Hot at all times
• Hot in run or start
• Ing e fuse 10a
• Instrument panel cluster (ipc)
• Logic
• Motor
• Motor ctrl a
• Motor ctrl b
• Nca
• Pnk
• Propshaft speed sensor (left front) (left front of transfer case)
• Propshaft speed sensor (right rear) (right rear of transfer case)
• Rear sig hi
• Rear sig lo
• Red
• S202
• S232
• S239
• Service 4wd/ awd
• Sp201 (right front of lower console)
• Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror, inverting driver module (olds)
• Theft deterent control module
• Transfer case encoder motor (on top of transfer case)
• Transfer case shift control module (behind lower left side of dash)
• Underhood fuse block (left side of engine compt)
• W/ immobilizer

4.2L VIN S

4.2L VIN S, A/T Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for 4.2L VIN S, A/T Wiring Diagram for Chevrolet TrailBlazer 2004:

• (i/p harn, 10 cm from steering column breakout, toward headlamp switch breakout)
• 1-2 shift red solenoid valve
• 2-3 shift red solenoid valve
• 3-2 shift red solenoid valve
• 4wd lo
• A2 c1
• Accelerator pedal position sensor (on bracket, above accelerator pedal)
• App 1 +5v
• App 1 lo
• App 1 sig
• App 2 +5v
• App 2 lo
• App 2 sig
• Automatic trans- mission fluid pressure manual valve position switch
• Automatic transmission
• Automatic transmission fluid temperature sensor
• Automatic transmission shift lock actuator
• Battery
• Body control module (bcm) (beneath left rear seat)
• C2 a7
• Class 2 data
• D2 c1
• D2 sw
• D3 sw
• D4 sw
• Data link connector (below left side of dash)
• Down (3-2)
• E3 c2
• Ect ref
• Ect sig
• Engine coolant temperature sensor (left front of engine block, near generator)
• F14
• G108 (lower left side of engine)
• Ground
• Hot at all times
• Hot in accy, run or start
• Hot in run or start
• Ign 0 fuse 10a
• Ignition
• Ignition 1
• Ing e fuse 10a
• Instrument panel cluster (ipc)
• Lo sw
• Mil ind
• Park/neutral position switch (left side of transmission)
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pcs sol (hi)
• Pcs sol (lo)
• Pnk
• Powertrain control module (upper left side of engine)
• Pressure control solenoid valve
• Prndl a in
• Prndl b in
• Prndl c in
• Prndl p in
• Rear fuse block (below left rear seat)
• Red
• Rev sw
• S232
• S239
• S320
• Service engine soon
• Solenoid
• Splice pack sp205 (behind left side of dash)
• Ss a (1-2)
• Ss b (2-3)
• Stop lamp switch, traction control switch, multi-function switch, headlamp leveling switch, inside rearview mirror, inverting driver module (olds)
• Stoplamp in
• Tac fuse 10a
• Tan
• Tcc
• Tcc pmw red
• Tcc pwm
• Tcc red
• Tfp sw a
• Tfp sw b
• Tfp sw c
• Tft ref
• Tft sig
• Theft deterent control module
• Throttle actuator control motor (on throttle body)
• Tp 1 +5v
• Tp 1 lo
• Tp 1 sig
• Tp 2 +5v
• Tp 2 lo
• Tp 2 sig
• Trailer brake control unit
• Transfer case circuit (w/ 2-spd transfer case)
• Underhood fuse block (left side of engine compt)
• Veh stop fuse 34 15a
• Vehicle speed sensor (4wd/awd: left rear of transfer case) (2wd: left rear of transmission)
• Vss (hi)
• Vss (lo)
• W/ immob
• W/ immobilizer
• W/o immob
• W/o immobilizer

WARNING SYSTEMS

Warning Systems Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Warning Systems Wiring Diagram for Chevrolet TrailBlazer 2004:

• (left side of underhood compt, near rear of underhood fuse block)
• (on lower left "b" pillar) g302
• (right front of lower console) splice pack sp201
• 5.3l 4.2l
• A12
• A15
• Auto
• B10
• Belt sw input
• Body control module (bcm) (beneath left rear seat, on rear fuse block)
• Class 2 serial data
• Computer data lines system
• Door ajar
• Dr ajar input
• Driver door latch assembly
• Driver door module (ddm) (below driver's door switch panel)
• Driver seat belt switch (in left front seat belt buckle)
• Drl defeat
• F10
• Front passenger door module (fpdm) (below front passenger door switch panel)
• G102
• G201
• G302 (on lower left "b" pillar)
• G303 (on lower right "b" pillar)
• Hdlmp on sig
• Head
• Headlamp switch
• Ignition key alarm switch
• Inflatable restraint sensing & diagnostic module (sdm) (below rear of center console)
• Instrument panel cluster (ipc)
• Key in ign sw
• Left rear door latch assembly
• Liftgate ajar sw
• Liftgate latch assembly
• Liftgate module (lgm) (center of liftgate)
• Liftglass ajar sw
• Liftglass ajar switch
• Logic
• Low reference
• Lr dr ajar sig
• Nca
• Park
• Passenger door latch assembly
• Powertrain control module (pcm) (4.2l: on upper left side of engine) (5.3l: near lower left front of engine)
• Radio
• Rear fuse block
• Right rear miniwedge (door jamb switch)
• Rr dr ajar sig
• S227
• S302
• S303
• Seat belt indicator
• Serial data
• Sw on input
• Tail gate ajar ind.
• Tan

WIPER/WASHER

Front Wiper/Washer Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Front Wiper/Washer Wiring Diagram for Chevrolet TrailBlazer 2004:

• A12
• Acc voltage
• Accessory voltage
• Body control module (beneath left rear seat, on fuse block)
• D10
• Frt wpr fuse 33 25a
• G102 (near rear of underhood fuse block)
• G103 (on left side of radiator support)
• G105 (in eng compt, on firewall, near i/p harn pass-through)
• G302 (on lower left "b" pillar)
• Ground
• Headlights system
• Hot at all times
• Hot in run and acc
• Lsd
• Mist
• Off
• Outside moisture sensor
• Outside moisture sensor signal 1
• Pnk
• Pulse
• Rain fuse 29 10a
• Rear fuse block (below left rear seat)
• Red
• S113
• S227
• Sensor signal 1
• Tan
• Turn signal multi- function switch
• Underhood fuse block (on left side of engine compt)
• W/s wash fuse 9 15a
• W/s wash relay 42
• Wash
• Windshield washer fluid pump (on washer fluid reservoir)
• Windshield washer relay cntrl
• Windshield wiper high signal
• Windshield wiper motor (on upper center of firewall)
• Windshield wiper switch signal
• Windshield wiper switch signal 2
• Windshield wiper/ washer switch

Headlamp Washer Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Headlamp Washer Wiring Diagram for Chevrolet TrailBlazer 2004:

• Body control module (bcm) (beneath left rear seat, on fuse block)
• G103 (on left side of radiator support)
• G201 (right front of lower console)
• Hdlp wash relay 37
• Hdlp wash sw sig
• Hdlp wash switch
• Headlamp switch
• Headlamp washer fluid pump (right front of eng compt)
• Headlamp washer switch
• Hot at all times
• Nca
• S113
• Sp201 (lower right front of lower console)
• Underhood fuse block (on left side of engine compt)
• Wash fuse 7 20a

Rear Wiper/Washer Wiring Diagram for Chevrolet TrailBlazer 2004

List of elements for Rear Wiper/Washer Wiring Diagram for Chevrolet TrailBlazer 2004:

• (in body harn, under right rear seat) sp306
• Battery
• Body control module (bcm) (beneath left rear seat, on fuse block)
• Class 2 ser data
• Cont
• Dly
• G103 (on left side of radiator support)
• G401 (lower left "d" pillar)
• Hot at all times
• Liftgate module (lgm)
• Off
• Rear fuse block (below left rear seat)
• Rear wash relay 38
• Rear washer relay
• Rear window motor speed signal
• Rear window mtr speed signal c2
• Rear window washer fluid pump (on washer fluid reservoir)
• Rear window wiper motor (inside tailgate)
• Rear window wiper/washer switch
• Rear wiper sw sig
• Rear wpr/wshr sw
• Rr wiper circuit breaker 15a
• S113
• S411
• Sound system
• Sp205 (behind left side of dash, near headlamp switch connector)
• Underhood fuse block (on left side of engine compt)
• W/ steering wheel controls
• Wash
• Wash fuse 7 20a