All Wiring Diagrams for Chevrolet TrailBlazer 2002 model

AIR CONDITIONING

Automatic A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002

List of elements for Automatic A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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 40a
Blower motor
Blower motor control processor
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 1 fuse 10a
Hvac control module
Hvac-b fuse 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
Nca
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 (dash harn, 16 cm from strng col conn breakout)
S211 (dash harn, 16 cm from sp201)
S216
S217
S271 (dash harn, 14.5 cm from i/p 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 with Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002:

(forward lamp harn,20cm from windshield washer pump breakout)
(left radiator support) g103
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
A12
Am/fm
Ambient light sens
B11
B12
Body control module (beneath left rear seat, on rear fuse block)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
Fan dn
Fan up
G103 (under left radiator support)
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Inflatable restraint steering wheel module coil
Low ref
Low reference
Lt sunload sens sig
Mode
Nca
Powertrain control module (upper left side of engine)
Radio ctrl sig
Rt sunload sens sig
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
Star connector 1 (on lower left side of dash)
Steering wheel control switches
Temp dn
Temp up
Underhood fuse block (left side of engine compt)
Vol dn
Vol up

Automatic A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002:

(lower console harness,near aux hvac module)
(not used)
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 temp actuator
Auxiliary blower motor processor
Auxiliary mode actuator
B10
B11
B12
B13
B14
B15
B16
Battery
Class 2 data
Console mode actuator
Console mode dr ctrl
Ctrl mode dr pos sig
Front auxiliary blower motor switch
G201
G402 (lower right "d" pillar)
Ground auxiliary hvac control module (rear of lower console)
Hot at all times
Interior lights system
Low reference
Off
Rear
Rear fuse block (below left rear seat)
Rear hvac module
Red
Rr hvac fuse 30a
S307 (console harness)
S324
S325
S326
S402 (body harn, 7..5 cm from lower left "d"pillar ground)
Solid state
Sp201 (right front of lower console)

Automatic A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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 40a
Blower motor
Blower motor control processor
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 1 fuse 10a
Hvac control module
Hvac-b fuse 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
Nca
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 (dash harn, 16 cm from strng col conn breakout)
S211 (dash harn, 16 cm from sp201)
S216
S217
S271 (dash harn, 14.5 cm from i/p 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 without Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002:

(forward lamp harn, 20cm from windshield washer pump breakout)
(left radiator support) g103
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
A12
Am/fm
Ambient light sens
B11
B12
Body control module (beneath left rear seat, on rear fuse block)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
Fan dn
Fan up
G103 (under left radiator support)
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Inflatable restraint steering wheel module coil
Low ref
Low reference
Lt sunload sens sig
Mode
Nca
Powertrain control module (upper left side of engine)
Radio ctrl sig
Rt sunload sens sig
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
Star connector 1 (on lower left side of dash)
Steering wheel control switches
Temp dn
Temp up
Underhood fuse block (left side of engine compt)
Vol dn
Vol up

Automatic A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002:

(lower console harn, near aux hvac module)
(not used)
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 temp actuator
Auxiliary blower motor processor
Auxiliary mode actuator
B10
B11
B12
B13
B14
B15
B16
Battery
Class 2 data
Console mode actuator
Console mode dr ctrl
Ctrl mode dr pos sig
Front auxiliary blower motor switch
G201
G402 (lower right "d" pillar)
Ground auxiliary hvac control module (rear of lower console)
Hot at all times
Interior lights system
Low reference
Off
Rear
Rear fuse block (below left rear seat)
Rear hvac module
Red
Rr hvac fuse 30a
S307 (console harness)
S324
S325
S326
S402 (body harn, 7..5 cm from lower left "d"pillar ground)
Solid state
Sp201 (right front of lower console)

Automatic A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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 40a
Blower motor
Blower motor control processor
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 1 fuse 10a
Hvac control module
Hvac-b fuse 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
Nca
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 (dash harn, 16 cm from strng col conn breakout)
S211 (dash harn, 16 cm from sp201)
S216
S217
S271 (dash harn, 14.5 cm from i/p 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, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Automatic A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2002:

(forward lamp harn, 20cm from windshield washer pump breakout)
(left radiator support) g103
(under left radiator support)
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
A12
Am/fm
Ambient light sens
B11
B12
Body control module (beneath left rear seat, on rear fuse block)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
Fan dn
Fan up
G103
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Inflatable restraint steering wheel module coil
Low ref
Low reference
Lt sunload sens sig
Mode
Nca
Powertrain control module (upper left side of engine)
Radio ctrl sig
Rt sunload sens sig
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
Star connector 1 (on lower left side of dash)
Steering wheel control switches
Temp dn
Temp up
Underhood fuse block (left side of engine compt)
Vol dn
Vol up

Manual A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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)
B10
B11
B12
Battery
Blower fuse 40a
Blower motor
Blower motor relay
Blower motor resistor assembly
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 1 fuse 10a
Hvac control module
Hvac fuse 30a
Hvac-b fuse 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
Nca
Off
Off blwr mtr cntrl
Rear fuse block (below left rear seat)
Recirc door cntrl
Recirulation actuator (upper right side of dash)
Red
S202 (dash harn, 16 cm from strng col conn breakout)
S211 (dash 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 with Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002:

(forward lamp harn, 20cm from windshield washer pump breakout)
(left radiator support) g103
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
G103 (under left radiator support)
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Low ref
Nca
Powertrain control module (upper left side of engine)
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
Star connector 1 (on lower left side of dash)
Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base with Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002:

(not used)
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 temp actuator
Auxiliary blower motor processor
Auxiliary mode actuator
B10
B11
B12
B13
B14
B15
B16
Battery
Class 2 data
Console mode actuator
Console mode dr ctrl
Ctrl mode dr pos sig
Front auxiliary blower motor switch
G201
G402 (lower right "d" pillar)
Ground auxiliary hvac control module (rear of lower console)
Hot at all times
Interior lights system
Low reference
Off
Rear
Rear fuse block (below left rear seat)
Rear hvac module
Red
Rr hvac fuse 30a
S307 (console harness)
S324
S325
S326
S402 (body harn, 7..5 cm from lower left "d"pillar ground)
Solid state
Sp201 (right front of lower console)

Manual A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (1 of 3) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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)
B10
B11
B12
Battery
Blower fuse 40a
Blower motor
Blower motor relay
Blower motor resistor assembly
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 1 fuse 10a
Hvac control module
Hvac fuse 30a
Hvac-b fuse 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
Nca
Off
Off blwr mtr cntrl
Rear fuse block (below left rear seat)
Recirc door cntrl
Recirulation actuator (upper right side of dash)
Red
S202 (dash harn, 16 cm from strng col conn breakout)
S211 (dash 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 without Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (2 of 3) for Chevrolet TrailBlazer 2002:

(forward lamp harn, 20cm from windshield washer pump breakout)
(left radiator support) g103
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
G103 (under left radiator support)
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Low ref
Nca
Powertrain control module (upper left side of engine)
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
Star connector 1 (on lower left side of dash)
Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Long Wheel Base without Rear Entertainment (3 of 3) for Chevrolet TrailBlazer 2002:

(lower console harn near hvac module)
(not used)
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 temp actuator
Auxiliary blower motor processor
Auxiliary mode actuator
B10
B11
B12
B13
B14
B15
B16
Battery
Class 2 data
Console mode actuator
Console mode dr ctrl
Ctrl mode dr pos sig
Front auxiliary blower motor switch
G201
G402 (lower right "d" pillar)
Ground auxiliary hvac control module (rear of lower console)
Hot at all times
Interior lights system
Low reference
Off
Rear
Rear fuse block (below left rear seat)
Rear hvac module
Red
Rr hvac fuse 30a
S307 (console harness)
S324
S325
S326
S402 (body harn, 7..5 cm from lower left "d"pillar ground)
Solid state
Sp201 (right front of lower console)

Manual A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Short Wheel Base (1 of 2) for Chevrolet TrailBlazer 2002:

(dash harn, 15 cm from mode act breakout)
(dash 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)
B10
B11
B12
Battery
Blower fuse 40a
Blower motor
Blower motor relay
Blower motor resistor assembly
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 1 fuse 10a
Hvac control module
Hvac fuse 30a
Hvac-b fuse 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
Nca
Off
Off blwr mtr cntrl
Rear fuse block (below left rear seat)
Recirc door cntrl
Recirulation actuator (upper right side of dash)
Red
S202 (dash harn, 16 cm from strng col conn breakout)
S211 (dash 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, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Manual A/C Wiring Diagram, Short Wheel Base (2 of 2) for Chevrolet TrailBlazer 2002:

(forward lamp harn,20cm from windshield washer pump breakout)
(left radiator support) g103
+5v ref
0-12v pulse
A/c compressor clutch
A/c compressor clutch relay
A/c fuse 10a
A/c low pressure switch (at right rear of eng compt, on accumulator)
A/c press sig
A/c refrigerent pressure sensor (on high pressure line near a/c comp)
Comp rly cntrl
Cooling fan
Cooling fan relay
Data link connector (on bottom of left side of dash)
E12
Eng fan fuse 10a
F12
G103 (under left radiator support)
G107 (lower left side of engine block)
G108 (lower left side of engine block)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 10a
Low ref
Nca
Powertrain control module (upper left side of engine)
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
Star connector 1 (on lower left side of dash)
Underhood fuse block (left side of engine compt)

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams for Chevrolet TrailBlazer 2002

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List of elements for Anti-lock Brake Wiring Diagrams for Chevrolet TrailBlazer 2002:

(under left side of dash) data link connector (dlc)
Abs fuse 33 60a
Abs pump
Anti-lock indicator
Auto a/c
B10
B7 b6
Body control module (bcm) (under dash, on heater case)
Brake fluid level switch (on master cylinder)
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 (lower left of engine block)
G201 (right front of lower console)
G304 (on left frame rail)
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/dci 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) (upper left side 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
S239
Serial data
Sp201
Splice pack sp205 (behind left side of dash)
Stop lamp switch (on brake pedal support bracket)
Tan
Tcc brake switch sig
Trac active telltale
Trac disable telltale
Traction active indicator
Traction control switch
Traction disable sw
Traction disabled indicator
Traction disabled switch
Underhood fuse block
Underhood fuse block (left side of engine compt)
Vehicle speed signal
Vss

ANTI-THEFT

Immobilizer Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Immobilizer Wiring Diagram for Chevrolet TrailBlazer 2002:

A10
A11
B10
B11
Battery+
Body control module (beneath left rear seat)
C2 a12
Data
Data link connector (under left side of dash)
Driver door module (below driver door switch panel)
Driver miniwedge door jamb switch
F10
Front passenger door module (below front passenger door switch panel)
Front passenger miniwedge door jamb switch
G102 (left rear of engine compt)
G302 (on left "b" pillar)
G303 (on lower right "b" pillar)
Ground
Hot at all times
Hot in acc, run or start
Ign 0
Ign 0 fuse 10a
Instrument panel cluster
Left rear miniwedge door jamb switch
Liftgate module
Lo ref
Low ref
Lr door sig
Memory systems
Nca
Pnk
Powertrain control module (on upper left side of engine)
Rear fuse block (below left rear seat)
Right rear miniwedge door jamb switch
Rr door sig
S202
S232
S302
S346 (w/ power seat)
S347 (w/ power seat) tan
Security ind
Serial data
Sig
Splice pack sp205 (behind left side of dash)
Splice pack sp206
Sw sig
Tan
Tbc 1 fuse 31 10a
Theft deterrent control module
Underhood fuse block (left side of engine compt)

Pass-Key Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Pass-Key Wiring Diagram for Chevrolet TrailBlazer 2002:

12v ref
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 (on left "b" pillar)
Ground
Hot at all times
Instrument panel cluster
Nca
Passlock sensor (at ignition switch)
Powertrain control module (on upper left side of engine)
Rear fuse block
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

BODY COMPUTER

Body Computer Wiring Diagrams for Chevrolet TrailBlazer 2002

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List of elements for Body Computer Wiring Diagrams for Chevrolet TrailBlazer 2002:

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)
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
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 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
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
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 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
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
Underhood fuse block
Warning systems
Windsh wiper sw sig 2
Wiper/washer system
X rear fog lps sw sig

COMPUTER DATA LINES

Computer Data Lines for Chevrolet TrailBlazer 2002

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List of elements for Computer Data Lines for Chevrolet TrailBlazer 2002:

class 2
(body harn, 15 cm from left front seat breakout)
(body harn, 15 cm from left right seat breakout)
(not used)
Auxiliary hvac control module
B11
Body control module (beneath left rear seat, on rear fuse block)
Cigar fuse 13 20a
Class 2
Data link connector (dlc) (on bottom left side of dash)
Driver door module (below driver door switch panel)
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)
G201 (right front of lower console)
Hot at all times
Hvac control module
Instrument cluster
Liftgate module
Passenger memory seat module
Powertrain control module (pcm) (on upper left side of eng)
Radio
Radio amplifier
S232 (i/p harn, 10 cm from steering column connector breakout)
S346
S347
Sp201 (right front of lower console)
Splice pack sp 206
Splice pack sp205
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
W/ communication system vehicle, gpa1
W/ immobilizer
W/ onstar
W/ power seat
W/ speaker system premium performance enhanced audio
W/o immobilizer
W/o power seat

COOLING FAN

Cooling Fan Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Cooling Fan Wiring Diagram for Chevrolet TrailBlazer 2002:

(forward lamp harn, 20 cm from windshield washer pump breakout) s113
0-12v pulse
Cooling fan
Cooling fan relay
Eng fan fuse 10a
G103 (under left radiator support)
G108 (lower left side of engine block)
Ground
Hall sensor
High spd maf
Hot at all times
Low ref
Powertrain control module (upper left side of engine)
Underhood fuse block (left side of engine compt)

CRUISE CONTROL

Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Cruise Control Wiring Diagram for Chevrolet TrailBlazer 2002:

5 volt ref
Accelerator pedal position sensor
App sensor 1
App sensor 2
B10
B4 c1
B6 c2
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 fuse 10a
Ign e fuse 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 25a
Stop lamp input
Tac motor ctrl 1
Tac motor ctrl 2
Tan
Tcc/brake switch (on brake pedal, on bracket)
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 15a
Vehicle speed sensor (vss) (on left rear of transfer case)
Vehicle speed sig
Vss

DEFOGGERS

Defogger Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Defogger Wiring Diagram for Chevrolet TrailBlazer 2002:

A1 c2
B11
Bat
Computer data lines system
Driver door module (ddm) (below driver door switch panel)
Driver outside rearview mirror
Front passenger door module (fpdm) (below front passenger door switch panel)
G401 (lower left "d" pillar)
Grd
Hot at all times
Htr
Hvac control module
Lgm 2 fuse 3 30a
Liftgate module (lgm)
Nca
Passenger outside rearview mirror
R def
Rear fuse block (below left rear seat)
Rear window defogger grid
S411
S900
Serial data
Sply volt
Tan

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Electronic Suspension Wiring Diagram for Chevrolet TrailBlazer 2002:

4wd fuse 15a
Air suspension compressor assembly (except xl: behind right rear wheelwell, xl : on left rear frame rail)
Air suspension inflator switch (xl: on left side of cargo area, except xl: (on right side of cargo area)
B11
Battery
Control
Ecas fuse 30a
G305 (on left frame rail)
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 (on upper left side of engine)
Rear fuse block (below left rear seat)
Red
Right rear air suspension sensor (on frame rail, near right rear suspension arm)
S117 (dash harness, 8.5 cm (3 in) from engine harness to dash harness connector breakout, toward the breakout for the underhood fuse block)
S306
Sensor ret
Sensor sig
Speed sens
Tan
Transmissions system
Underhood fuse block (on left side of engine compt)

ENGINE PERFORMANCE

4.2L

4.2L VIN S, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Engine Performance Wiring Diagrams (1 of 5) for Chevrolet TrailBlazer 2002:

4wd low sig
5 volt ref
A/c compr rel
A/c press sens
Accelerator pedal position sensor (above accelerator pedal)
Air conditioning system
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 (below left side of dash)
Eng spd sig out
F12
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 panel cluster
Intake air temperature sensor (in air intake duct, top right of engine)
Intrument cluster system
Lo ref
Low ref
Malfunction indicator lamp
Mil ctrl
Passlock sensor (in ignition lock cylinder case)
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 (dash harn, near breakout to steering column)
S239
S320
Set/cruise sw
Star connector 1 (behind left side of dash)
Starting/ charging system
Stop lamp volt
Strt enable rel
Tan
Tcc rel sw sig
Tcc/brake switch (above brake pedal, on bracket)
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 Diagrams (2 of 5) for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Engine Performance Wiring Diagrams (2 of 5) for Chevrolet TrailBlazer 2002:

A11
Ecm b fuse 10 20a
Eng 1 fuse 26 10a
Engine oil level & temperature sensor (right side of eng block)
Engine oil pressure switch (right side of eng block)
Evaporative emission canister purge solenoid (left side of engine block)
Evaporative emission canister vent solenoid (left rear of fuel tank)
F/pmp relay
Fuel pump/ & sender assembly (in fuel tank)
G107 (right rear of engine)
G108 (lower left side of engine block)
G305 (on left frame rail)
Hot at all times
Hot in run & start
Park/neutral position switch (left side of transmission)
Pnk
Pnk a
Under- hood fuse block
Under- hood junction block
Vehicle speed sensor (left rear of transfer case)

4.2L VIN S, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Engine Performance Wiring Diagrams (3 of 5) for Chevrolet TrailBlazer 2002:

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 at all times
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 lvl sw sig
Oil pres sw sig
Oil temp sens
Pc sol high ctrl
Pc sol low ctrl
Pcm 1 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 Diagrams (4 of 5) for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Engine Performance Wiring Diagrams (4 of 5) for Chevrolet TrailBlazer 2002:

Automatic transaxle
C10
Ctrl
D10
Downshift (3-2 shift)
E10
F10
G109 (on lower side of engine)
Gnd
Ign
Ignition coils
Manifold
Nca
Pnk
Pnk a
Pressure switch
Red
Solenoid
Solenoid (1-2 shift) shift a
Solenoid (2-3 shift) shift b
Solenoid tcc
Solenoid tcc pmw
Spark plug
Temperature sensor
Transmission fluid
Under- hood fuse block
Variable bleed

4.2L VIN S, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Engine Performance Wiring Diagrams (5 of 5) for Chevrolet TrailBlazer 2002:

839
(not used)
12v ref
5v ref
Camshaft position sensor (top center rear of engine)
Cooling fans system
Cpm sens sig
Damping l/d sig
Etc fuse 23 10a
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
Starting/ charging system
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

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Back-up Lamps Wiring Diagram for Chevrolet TrailBlazer 2002:

A9 c1
B/u lmp volt
B12
B13
B13 c4
Backup fuse 27 15a
Backup lamp
Battery
Body control module (bcm) (beneath left rear seat on rear fuse block)
C2 f
C3 b4
C8 c2
G108 (lower left side of engine block)
G401 (lower left "d" pillar)
G402 (lower right "d" pillar)
Hot at all times
Hot in run or start
Left taillamp assembly
Mirrors system (automatic day/ night mirror)
Nca
Park/ neutral position switch
Park/neutral position switch (left side of transmission)
Pnk
Powertrain control module (on upper left side of engine)
Rear fuse block (below left rear seat)
Right taillamp assembly
S402
S411
Serial data
Sp205
Tbc 5 fuse 32 10a
Tr sw a
Tr sw b
Tr sw c
Tr sw p
Trailer connector
Trlr b/u fuse4 10a
Under- hood fuse block (on left side of engine compt)

Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002:

A10
A14
Back-up lamps circuit
Body control module (bcm) (beneath left rear seat on rear fuse block)
C3 e5
D10
Elek brk fuse 19 30a
F park fuse 37 10a
G102 (left rear of engine compt)
G103 (on left side of radiator support)
G107 (lower left side of engine)
G201 (right front of lower console)
G403 (left side of rear frame crossmember)
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
Lt turn sig
Nca
Park lamp relay 30
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
S107
S227
Splice pack sp201
Tan
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 2002

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List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002:

(chevy, olds)
(gmc)
(license lamp harn)
Battery
C1 d3
Center high mount stop lamp (chmsl)
Driver door module (ddm) (below driver door switch panel)
Driver outside rearview mirror (w/ mirror turn signal indicator)
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)
G401 (lower left "d" pillar)
G402 (lower right "d" pillar)
Ground
Hazard sw
Hot at all times
Left tail lamp assembly
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 tail lamp assembly
Rr lamp volt
Rr park fuse 17 10a
Rt trn sig voltage
Rt turn fuse 43 10a
Rt turn sig
S401
S402
S901
S909
Splice pack sp201
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 4) for Chevrolet TrailBlazer 2002

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List of elements for Ground Distribution Wiring Diagram (1 of 4) for Chevrolet TrailBlazer 2002:

(chevy)
(olds, gmc)
(w/ all wheel drive)
(w/ deluxe and luxury front bucket seats)
(w/ driver information center display)
(w/ high pressure headlamp washer)
(w/ premium performance enhanced audio speaker system)
(w/ vehicle communication system)
(w/ wiring provisions)
A/c low pressure switch
A12
A18
Bare
Battery
C10
C314
Coolant bypass valve (w/ long wheelbase)
Cooling fan tether
D10
Data link connector
E10
F10
Front passenger door module (fpdm)
G101 (left side of engine compt)
G102 (left rear of engine compt)
G103 (on left side
G104 (on left underside of hood)
G105 (left rear of engine compt)
G106 (left front wheel well)
G109 (on lower left side of engine)
G110 (on lower left side of engine)
G303 (on the lower right "b" pillar)
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 key alarm switch
Inflatable restraint sensing and diagnostic module (sdm)
Instrument panel cluster (ipc)
Nca l
Of radiator support)
Onstar microphone ground shield 2
Onstar module
Passenger seat
Radio
Radio ground shield
Rear window washer pump
Right cornering lamp (if equipped)
Right front fog lamp
Right front marker lamp
Right front park/turn signal lamp
Right headlamp
Right headlamp leveling actuator (if equipped)
Right rear miniwedge (door jamb switch)
Right rear window switch
S103 (forward lamp harn, 8 cm (3 in) from the rear washer pump motor breakout)
S110
S113 (forward lamp harn, 20 cm (8 in) from the windshield washer pump breakout)
S202 (i/p harn, 16.5 cm (6.5 in) from the steering column connector breakout)
S227
Tan
Transfer case shift control module
Turn signal/ multifunction switch
Underhood fuse block (on left side of engine compt)
Underhood lamp
W/ front and side, driver and passenger inflatable restraint system seat)
Windshield wiper motor
Windshield wiper/ washer switch
Windshiled washer fluid level switch
Windshiled washer fluid pump

Ground Distribution Wiring Diagram (2 of 4) for Chevrolet TrailBlazer 2002

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List of elements for Ground Distribution Wiring Diagram (2 of 4) for Chevrolet TrailBlazer 2002:

(w/ automatic temperature control)
(w/ custom console roof interior)
(w/ moisture sensitive pulse windshield wiper system)
(w/ rear seat enter- tainment package)
A11
Air suspension compressor (w air auto level control)
Automatic level control (alc) air compressor (w/ air auto level control)
B11
Bare
Body control module (bcm)
Bravada
Breakout for c700)
C308
C311
Cargo lamp
Digital video disc (dvd) player
Driver door module (ddm)
Driver memory seat module
Driver vanity mirror lamp
Electronic brake control module (ebcm)
Envoy. envoy xl
Fluid level sensor
Fluid pump and sender assembly
Front passenger vanity mirror lamp
G302 (on left "b" pillar)
G304 (on left frame rail)
G305 (on left frame rail)
G306 (rear of left rear door)
Garage door opener (if equipped)
Inside air temepature sensor assembly
Inside rearview mirror
Left backup lamp
Left center courtesy reading lamp
Left quarter glass switch (w/ long wheelbase)
Left rear courtesy reading lamp
Left rear courtesy reading lamp (w/ long wheelbase)
Left rear miniwedge (door jamb switch)
Left rear quarter glass switch (w/ long wheelbase)
Left rear window switch
Lock relay 18
Long wheelbase
Nca
Onstar ground shield 1 (w/ long wheelbase)
Onstar ground shield 1 (w/ short wheelbase)
Outside moisture sensor
Rap relay 22 (w/ long wheelbase)
Rear fuse block (below left rear seat)
Right backup lamp
Right center courtesy reading lamp
Right front courtesy reading lamp
Right quarter glass switch (w/ long wheelbase)
Right rear courtesy reading lamp
Right rear courtesy reading lamp (w/ long wheelbase)
Right rear quarter glass switch (w/ long wheelbase)
S306
S312 (main headliner harn, 80 cm (31 in) from c308 breakout)
S322 (headliner harn, 16 cm (6 in) from the isrvm breakout)
S350 (headliner harn, 3.5 cm (1.5 in) from the left quarter- glass breakout)
S351
Short wheelbase
Sunroof module
Sunroof module (w/ long wheelbase)
Sunroof switch (w/ sun- roof)
Trailblazer
Unlock relay 24
Voice recorder (w/ recall recorder convenience)
W/ custom console roof interior)

Ground Distribution Wiring Diagram (3 of 4) for Chevrolet TrailBlazer 2002

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List of elements for Ground Distribution Wiring Diagram (3 of 4) for Chevrolet TrailBlazer 2002:

(w/ automatic temperature controls)
(w/ manual temperature controls)
(w/ traction control powertrain management,
(w/ traction control powertrain management, and oldsmobile conversion name plt)
(w/ uk6)
(w/o uk6)
A/t shift lever
A16
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 relay
C201
Cigar lighter
Console auxiliary power outlet
Data link connector
Fan/ temp switch
Front auxiliary power outlet
Fuel/ trip switch
G201 (right front of lower console)
Gmc conversion name plt)
Headlamp switch
Hvac control module
I/p compartment lamp
Ignition lock solenoid
Inflatable restraint steering wheel module coil
Instrument panel cluster (ipc)
Inverting driver module
Left courtesy lamp
Nca
Oldsmobile conversion name plt, and
Radio
Rear mode control
Rear wiper/ washer switch
Recirulation actuator (w/ manual temperature controls)
S226
S307 (console harn)
Select/ personal- ization switch
Splice pack sp201 (right front of lower console)
Steering wheel control assembly
Traction control switch
Transfer case control switch (if equipped)
Transfer case shift control module
Turn/ signal hazard flasher module
Volume am/fm switch
W/ automatic temperature controls
W/ long wheelbase
W/ manual temperature controls
W/ short wheelbase

Ground Distribution Wiring Diagram (4 of 4) for Chevrolet TrailBlazer 2002

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List of elements for Ground Distribution Wiring Diagram (4 of 4) for Chevrolet TrailBlazer 2002:

(chevy)
(olds, gm)
(w/ mpg digital readout)
(w/ right rear window electric defogger)
(w/ wiring provisions)
A/c compressor clutch
Brake fluid level switch
Center high mounted stoplamp (chmsl)
F/pump relay 41
Fan relay 45
Front axle actuator (if equipped)
G107 (lower
G108 (lower
G401 (lower left "d" pillar)
G402 (lower right "d" pillar)
G403 (left side of rear frame crossmember)
Hdm relay 46
Hood ajar switch
Left cornering lamp (if equipped)
Left front fog lamp
Left front marker lamp
Left front park/turn signal lamp
Left headlamp
Left headlamp leveling actuator (if equipped)
Left license lamp
Left side of engine)
Left taillamp assembly
Liftgate module (lgm)
Nca
Park/ neutral position (pnp) switch
Powertrain control module (pcm)
Radio amplifier
Rear accessory power outlet
Rear auxiliary rsa/hvac control module (w/ long wheelbase)
Rear window defogger grid
Rear window wiper motor
Right license lamp
Right taillamp assembly
S107 (forward lamp harn, 4.5 cm (2 in) from the left turn signal breakout)
S401 (body harn, 7.5 (3 in) from g401 breakout) (short wheelbase) (body harn, 10 cm (4in) from g401 breakout) (long wheelbase)
S402 (body harn, 7.5 cm (3 in) from g402 breakout) (short wheelbase) (body harn, 13 cm (5 in) from g402 breakout) (long wheelbase)
S411
S901 (liftgate harn, 50 cm (19,5 in) from the lift- gate module breakout)
Trailer connector
Underhood fuse block (on left side of engine compt)
W/ long wheelbase
W/ premium performance enhanced audio speaker system)
W/ short wheelbase

HEADLIGHTS

Headlight Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Headlight Wiring Diagram for Chevrolet TrailBlazer 2002:

(left rear of eng compt)
(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) (under left rear seat)
C12 c2
C2 c2
C2 d1
C4 f1
C4 f2
Coils fuse 14 10a
E1 c4
E11
E2 c4
E6 c1
F10
Flash to pass
Fog lp fuse 11 10a
Foglamp relay 39 headlamp relay 43
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 headlamp
Left high beam headlamp
Left low beam headlamp
Low ref
Lt high hdlp fuse 3 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 headlamp
Right high beam headlamp
Right low beam headlamp
Rly ctrl
Rt hi hdlp fuse 2 10a
Rt lo hdlp fuse 3 10a
S103
S107
S113
S227
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 2002

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List of elements for Horn Wiring Diagram for Chevrolet TrailBlazer 2002:

"a" note horn
"f" note horn
Body control module (beneath left rear seat, on rear fuse block)
E12
F4 c4
G103 (engine compt, left of radiator support)
Horn assembly
Horn fuse 21 15a
Horn relay
Horn relay control
Horn switch
Hot at all times
Steering column ground
Underhood fuse block (on left side of engine compt)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Instrument Cluster Wiring Diagram for Chevrolet TrailBlazer 2002:

(on left side of radiator support)
12v
A10
A11
A12
Abs ind
Air bag ind
Air suspension compressor assembly (on left rear frame rail, near spare tire)
B10
B11
B12
Batt
Battery ind
Brake ind
Change eng oil ind
Check gauges ind
Class 2
Computer data lines system
Cruise ind
Dic
Dic fuel sig
Dic set/reset
Dic sw sig
Dic toggle sw
Eng speed
Eng speed sig
Engine oil level & temperature sensor (on right side of eng block)
Engine oil pressure switch (on right side of eng block)
Exterior lights system
Fuel
Fuel gauge
Fuel level
Fuel pump & sender assembly (inside fuel tank)
G102 (left rear of eng compt)
G103
G201 (right front of lower console)
High beam ind
Hot at all times
Hot in run or start
Ign 1
Ign e fuse 22 10a
Illumination (8 bulbs)
Inflatable restraint steering wheel module coil
Instrument cluster
Interior lights system
Ipc/dic fuse 24 10a
Left turn
Left turn ind
Lo coolant
Lo washer fluid
Logic
Low fuel ind
Low ref
Mil ctrl
Nca
Not used
Odometer
Oil gauge
Oil level sw
Oil press sw
Oil temp send
Personal- ization
Pnk
Powertrain control module (pcm) (on upper left side of eng)
Prnd321
Reduce eng power ind
Right turn
Right turn ind
S113
S117
S202
S226
Seat belt ind
Security ind
Select
Service 4wd/awd ind
Service engine soon ind
Shift ind
Speedometer
Steering wheel control assembly
Tachometer
Tailgate ajar ind
Temp gauge
Trip
Underhood fuse block (at left side of engine compt, near battery)
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 2002

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List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002:

A12
A12 c2
B17
B18
Batt +
Body control module (beneath left rear seat, on rear fuse block)
C1 f12
C2 a2
C2 b10
C3 f6
C4 b3
Computer data lines system
Courtesy lamp switch
Data
Door ajar input
Driver door jamb switch
Driver door module
E10 c2
F11
Front passenger door jamb switch
Front passenger door module
G105 (left rear of engine compt)
G201 (right front of lower console)
G302 (on left "b" pillar)
G303 (on lower right "b" pillar)
Headlamp switch
Hot at all times
I/p compartment lamp
Interior lamp defeat switch
Lamp cntrl
Lamp on
Lamp supp
Left courtesy lamp
Left rear door jamb
Lift gate ajar input
Lift glass ajar input
Liftgate ajar switch
Liftgate door jamb switch
Liftgate module
Lmp defeat
Long wheelbase
Low ref
Lr dr sig
Nca
Rear fuse block
Rear fuse block (below left rear seat)
Right rear door jamb
Rr dr sig
S105
S211
Serial data class 2
Short wheelbase
Splice pack sp201 (right front of lower console)
Tan
Tbc 3 fuse 4 10a
Tbc 4 fuse 40 10a
To courtesy/ reading lamps (diagram 2 of 2)
Underhood lamp

Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002:

(headliner harness, 17 cm (7 in) from the left sunshade mirror lamp breakout) s331
(headliner harness, 26 cm (10 in) from the left front dome/reading lamp, toward the left sunshade mirror lamp) s390
Cargo lamp
Courtesy
From rear fuse block (diagram 1 of 2)
G302 (on left "b" pillar)
Left center courtesy/ reading lamp
Left front courtesy/ reading lamp
Left front vanity mirror lamp
Left rear courtesy/ reading lamp
Reading
Right center courtesy/ reading lamp
Right front courtesy/ reading lamp
Right front vanity mirror lamp
Right rear courtesy/ reading lamp
S312
S332
S350

Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002:

(except uk6) (uk6)
(headliner harn, 25 cm (10 in) from the left sunshade mirror lamp breakout s329
(overhead console harness)
(uk6) (except uk6)
Auxiliary rsa/hvac control module
B c1
B1 a1
B1 b18
B13
B9 c1
Batt +
Body control module (beneath left rear seat, on rear fuse block)
C1 c
C2 a2
C2 e3
C4 b2
Computer data lines system
Data
Fan/ temp switch
Front auxiliary blower motor switch
Fuel/ trip switch
G201 (right front of lower console)
G302 (on 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 wheelbase
Nca
Radio
Rear auxiliary hvac control module
Rear fuse block (below left rear seat)
Rear window wiper/ washer switch
Right control switch
Right quarter glass switch
S230 (dash harness, 5 cm (2 in) from the sp201 breakout, toward the i/p auxiliary power breakout)
S233
S234
S302
S307
S330
S332
Select/ personal- ization switch
Short wheelbase
Splice pack sp201 (right front of lower console)
Sunroof switch
Tbc 2 fuse 7 10a
Tbc 5 fuse 32 10a
Traction control switch
Transfer case shift control switch
Voice recorder
Volume am/fm switch

Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002:

2wd
4 hi
4 lo
5v ref
A10
Afwd
B10
B14
B19
Body control module
Body control module (beneath left rear seat, on rear fuse block)
C2 c
C2 c2
C4 b19
Computer data lines system
Data
Driver door module
E11
Electronic brake control module (on inner left frame rail bside transmission)
Front fog lamp indicator
G201 (right front of lower console)
Hdlp on
Headlamp on
Headlamp switch
Illum
L c1
Led dim
Low ref
Mem pwr
Memory/ heated seat switch
Nca
Pnk
Rear fog lamp indicator
Rear fuse block
Rear fuse block (below left rear seat)
S307
Splice pack sp201 (right front of lower console)
Traction active
Traction control switch
Traction disabled
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)

MEMORY SYSTEMS

Driver's Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Driver's Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2002:

(below driver's seat) s313
5v ref
A10
A11
A12
B10
B11
B12
Bat (+)
Batt (+)
C2 c1
Class 2 serial data
Computer data lines system
D tan
Driver lumbar adjuster switch
Driver memory seat module (below left front seat)
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 lumbar position sensor (up/ down)
Driver seat lumbar vertical motor
Driver seat rear position sensor
Driver seat rear vertical motor
Driver seat recline motor
Driver seat recline position sensor
Frt dn
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 left "b" pillar)
Gnd
Heated seat pwr
Heated seat therm sig
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
Lgm/dsm fuse 6 10a
Low ref
Lum dn sw sig
Lum fwd sw sig
Lum horiz pos sen sig
Lum motor dn crl
Lum mtr fwd ctrl
Lum mtr rwd ctrl
Lum mtr up ctrl
Lum rwd sw sig
Lum sw pwr
Lum up sw sig
Memory systems (passenger)
Nca
Out
Pnk
Rear dn
Rear fuse block
Rear up
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 vert mtr dn ctrl
Rr vert mtr up ctrl
Rwd
S302
S314
Seats circuit breaker 8 30a
Seats system (heated seats)
Tan
Vert mtr pos sen sig

Memory Mirrors Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Memory Mirrors Wiring Diagram for Chevrolet TrailBlazer 2002:

5v ref
Bat (+)
Class 2 serial data
Computer data lines system
Down
Down sig
Driver
Driver door module (below driver door switch)
Driver memory seat switch
Driver outside rearview mirror
Driver sig
Exit
Front passenger door module (below front passenger door switch)
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

Passenger's Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Passenger's Memory Seat Wiring Diagram for Chevrolet TrailBlazer 2002:

5v ref
A10
A11
A12
B10
B11
B12
Bat (+)
Batt (+)
C2 d1
Class 2 serial data
Computer data lines system
D tan
Front passenger seat adjuster switch
Frt dn
Frt up
Frt vert dn sw sig
Frt vert mtr dn ctrl
Frt vert mtr up ctrl
Frt vert up sw sig
Fwd
G303 (on lower right "b" pillar)
Gnd
Heated seat pwr
Heated seat therm sig
Horiz fwd sw sig
Horiz mtr fwd ctrl
Horiz mtr rwd ctrl
Horiz rwd sw sig
Hot at all times
Lgm/dsm fuse 6 10a
Low ref
Lum dn sw sig
Lum fwd sw sig
Lum horiz pos sen sig
Lum motor dn crl
Lum mtr fwd ctrl
Lum mtr rwd ctrl
Lum mtr up ctrl
Lum rwd sw sig
Lum sw pwr
Lum up sw sig
Memory systems (passenger)
Nca
Out
Passenger lumbar adjuster switch
Passenger memory seat module (below left front seat)
Passenger seat front vertical motor
Passenger seat horizontal motor
Passenger seat lumbar horizontal motor
Passenger seat lumbar position sensor (forward/ rearward)
Passenger seat lumbar position sensor (up/ down)
Passenger seat lumbar vertical motor
Passenger seat rear vertical motor
Passenger seat recline motor
Pnk
Rear dn
Rear fuse block
Rear up
Rear vert dn sw sig
Rear vert up sw sig
Rec fwd
Rec rwd
Recline fwd sw sig
Recline mtr fwd ctrl
Recline mtr rwd ctrl
Recline rwd sw sig
Red
Rr vert mtr dn ctrl
Rr vert mtr up ctrl
Rwd
S317
Seats circuit breaker 8 30a
Seats system (heated seats)
Tan

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2002

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List of elements for Power Distribution Wiring Diagram (1 of 5) for Chevrolet TrailBlazer 2002:

(i/p harn, 18 cm (7in) from the a/t pnk
(not used)
(w/ auto air level control)
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
A/t shift lever
A11
A18
Abs fuse 33 60a
Acc
Atc fuse 8 25a
Automatic level control (alc) compressor
Automatic transmission
Auxiliary mode actuator (w/ short wheelbase)
B11
Battery
Battery fuse 48 125 a
Body control module (bcm)
C175
Crank fuse 17 10a
Defrost actuator
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 air temperature actuator
Lock
Mode actuator
Nca
Pnk
Powertrain control module (pcm)
Rear fuse block
Recirculation actuator
Red
Ride fuse 15 10a
Right air temperature actuator
Run
S133
Shift lever connector breakout) s320
Start
Starter
Starter relay
Tbc ig fuse 50 3a
To blower fuse 35 (diagram 2 of 5)
To brake fuse 51 (diagram 2 of 5)
To rear fuse block lgm/dsm fuse 6 (diagram 4 of 5)
Torque converter clutch (tcc) solenoid valve
Torque converter clutch pulse width modulation (tcc pwm) solenoid valve
Traction control switch (w/ automatic temperature control)
Trailer connector
Trailer fuse 32 40a
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 5) for Chevrolet TrailBlazer 2002

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List of elements for Power Distribution Wiring Diagram (2 of 5) for Chevrolet TrailBlazer 2002:

(from rear l fuse block (diagram 4 of 5)
(long wheelbase)
(short wheelbase)
(w/ gmc conversion name plt)
(w/ rear b
(w/ rear c
(w/o rear a
A20
Acc
Automatic level control (alc) compressor
Aux pwr 1 fuse 46 20a
Aux pwr 2 fuse 15 20a
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
Data link connector (dlc)
Digital video disc (dvd) player
E10
Ecas fuse 1 30a
Flash fuse 52 25a
From hvac i c fuse 39 (diagram 1 of 5)
From ride b fuse 15 (diagram 1 of 5)
Front auxiliary power outlet
Frt wpr fuse 33 25a
G201 (right front of lower console)
G401 (lower left "d" pillar)
G402 (lower right "d" pillar)
Ign b fuse 36 40a
Ignition switch
Instrument panel cluster (ipc)
Ipc/dic fuse 24 10a
Left tail/ stop lamp
Lock
Nca
Outside moisture sensor
Pnk
Powertrain control module (pcm)
Rain fuse 29 10a
Rear auxiliary power outlet
Rear fuse block
Red
Right tail/ stop lamp
Run
S307
S343
S401
S402
Seat enter- tainment package and moisture sensitive wind- shield wiper system)
Seat enter- tainment package, w/ moisture sensitive wind- shield wiper system)
Seat enter- tainment package, w/o moisture sensitive wind- shield wiper system)
Splice pack sp201
St/lp fuse 12 25a
Start
Stoplamp switch
Tbc acc fuse 31 25a
Tbc run fuse 52 3a
To pcm b fuse 10 (diagram 3 of 5)
To underhood fuse block (diagram 3 of 5)
Trailer brake wiring
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/ long wheelbase
W/ manual hvac
W/ short wheelbase
Windshield wiper motor

Power Distribution Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2002

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List of elements for Power Distribution Wiring Diagram (3 of 5) for Chevrolet TrailBlazer 2002:

A/t shift lever
Backup fuse 27 15a
Body control moduel (bcm)
Btsi fuse 25 10a
C12
Coils fuse 14 10a
E10
Eng 1 fuse 26 10a
Etc fuse 23 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 5)
From ignition switch (diagram 2 of 5)
From pcm i fuse 28 f (diagram 3 of 5)
Fuel injector 1
Fuel injector 2
Fuel injector 3
Fuel injector 4
Fuel injector 5
Fuel injector 6
Headlamp driver module (hdm) relay 46
Headlights system
Heated oxygen sensor (ho2s) sensor 1
Heated oxygen sensor (ho2s) sensor 2
Hi beam relay 43
Ign e fuse 22 (diagram 4 of 5)
Inflatable restraint sensing and diagnostic module (sdm)
Ingnition coil 1
Ingnition coil 2
Ingnition coil 3
Ingnition coil 4
Ingnition coil 5
Ingnition coil 6
Left headlamp
Lt hi hdlp fuse 5 10a
Lt low hdlp fuse 3 10a
Nca
O2 fuse 29 10a
Park/neutral position (pnp) switch
Pcm b fuse 10 20a
Pcm i fuse 28 15a
Pnk
Powertrain control moduel (pcm)
Powertrain control module (pcm)
Right headlamp
Rt hi hdlp fuse 2 10a
Rt low hdlp fuse 6 10a
S104
Sir fuse 18 10a
Stop lamp switch
Tbc 1 fuse 31 10a
To o2 fuse 29 (diagram 3 of 5)
Trailer connector
Trlr b/u fuse 4 10a
Under- hood fuse block

Power Distribution Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2002

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List of elements for Power Distribution Wiring Diagram (4 of 5) for Chevrolet TrailBlazer 2002:

(w/ rear e
(w/ rear f
(w/o rear d
A/c relay 44
A19
Amp fuse 11 20a
B13
Body control module (bcm)
C10
Communictaion system)
D10
D12
Ddm fuse 10 10a
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
Flat wire
From backup fuse 27 g (diagram 3 of 5)
From hvac b fuse 36 h (diagram 4 of 5)
From underhood fuse block, battery fuse 48 (diagram 1 of 5)
Front passenger door module (fpdm)
Front passenger memory seat module
Garage door opener
Headlamp leveling switch (if equipped)
Hvac b fuse 36 10a
Hvac control module
Ign e fuse 22 10a
Inside rearview mirror
Instrument panel cluster (ipc)
Left headlamp leveling actuator (if equipped)
Left rear window switch
Lgm/dsm fuse 6 10a
Liftgate module (lgm)
Lt doors circuit breaker 2 25a
O2 fuse 29 10a
Oh batt/onstar fuse 27 10a
Park/ neutral positon (pnp) switch
Pdm fuse 12 10a
Pnk
Radio
Radio amplifier (w/ premium radio)
Radio fuse 41 15a
Rear auxiliary hvac control module (w/ automatic temperature control)
Rear fuse block
Red
Right headlamp leveling actuator (if equipped)
Right rear window switch
Rt doors circuit breaker 1 25a
S239
S340 (overhead console harn)
S341
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)
Stop lamp switch
Tbc 5 fuse 32 10a
To aux pwr 1 fuse 46 (diagram 2 of 5)
To rear fog lamp realay 45 (diagram 5 of 5)
To tbc 5 fuse 32 (diagram 4 of 5)
Traction control switch (w/ traction control powertrain management)
Turn/ signal mult- function switch
Under- hood fuse block
Vehicle communictaion interface module (w/ vehicle
Voice recorder (w/ recorder recall con- venience)

Power Distribution Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2002

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List of elements for Power Distribution Wiring Diagram (5 of 5) for Chevrolet TrailBlazer 2002:

(chev, olds)
(chev, olds) b
(diagram 4 of 5)
(gmc)
(license lamp harn) s909
(not used)
(w/ long wheelbase)
(w/ long wheelbase) h
(w/ short wheelbase)
(w/ short wheelbase) g
A10
A11
A12
A4 g
Auxiliary hvac module (w/ long wheelbase)
B d
B10
B17
Body control module (bcm)
Breakout)
D (gmc)
D10
Driver door module (ddm)
Driver memory seat module
E4 h
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 5)
Front passenger door module (fpdm)
Front passenger memory seat module
G h
G302 (on left "b" pillar)
Instrument panel cluster (ipc)
Left front marker lamp
Left front park/turn signal lamp
Left license lamp
Left quarter glass switch (w/ long wheelbase)
Left taillamp
Left taillamp assembly
Lgm 2 fuse 3 30a
Liftgate module (lgm)
Lr park fuse 14 10a
Lt turn fuse 38 10a
Nca
Park lamp relay 50
Rear fog lamp relay 45
Rear fuse block
Rear window wiper motor
Retained accessory power (rap) relay
Right front marker lamp
Right front park/turn signal lamp
Right license lamp
Right quarter glass switch (w/ long wheelbase)
Right taillamp assembly
Rr fog fuse 5 10a
Rr hvac fuse 13 30a
Rr park fuse 17 10a
Rr wiper circuit breaker 9 15a (w/ long wheelbase)
Rt turn fuse 43 10a
S301
S302
S900
Seats circuit breaker 8 30a
Sunroof fuse 20 fuse 28 30a
Sunroof module
Sunroof module (w/ long wheelbase)
Taillamp assembly (chevy)
Tan
Tbc 2 fuse 40 10a
Tbc 3 fuse 40 10a
Tbc 4 fuse 40 10a
To rr wiper circuit breaker 9 (diagram 5 of 5)
To vent wdo fuse (diagram 5 of 5)
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 20a

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Power Door Lock Wiring Diagram for Chevrolet TrailBlazer 2002:

A13
Batt
Body control module (beneath left rear seat)
C10
C2 f6
C4 a13
C4 a5
D10
Ddm fuse 10a
Driver door lock actuator
Driver door lock switch
Driver door module
Front passenger door lock actuator
Front passenger door module
G302 (on left "b" pillar)
G303 (on right "b" pillar)
Ground
Hot at all times
Left rear door lock actuator
Liftgate door lock actuator
Liftgate module
Lock
Lock ctrl
Lock relay
Locks fuse 10a
Lt doors c.b. 25a
Memory systems (w/ power seat)
Nca
Passenger door lock switch
Pdm fuse 10a
Power
Rear fuse block
Right rear door lock actuator
Rt doors c.b. 25a
S346 (w/ power seats)
S347 (w/ power seats)
Serial data
Splice pack 205 (at left kick panel)
Splice pack 206 (right side or rear floor panel)
Tan
Unlock
Unlock ctrl
Unlock relay

POWER MIRRORS

Automatic Day/Night Mirror Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Automatic Day/Night Mirror Wiring Diagram for Chevrolet TrailBlazer 2002:

A12
Air temp sensor
Ambient air temperature sensor
Automatic day/night mirror
B12
B6 c2
Back up lamp voltage output c3
Back up voltage
Body control module (bcm) (beneath left rear seat, on rear fuse block)
Computer data lines system
Driver door module (ddm)
Driver outside rearview mirror
E10
E12
G302 (left "b" pillar)
Ground
Hot in run and start
Ign 1
Ign e fuse 22 10a
Inside rearview mirror
Low ref
Mir signal
Nca
On/off
Pnk
Rear fuse block (below left rear seat)
S322
Serial data
Underhood fuse block

Power Mirrors Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Power Mirrors Wiring Diagram for Chevrolet TrailBlazer 2002:

5v ref
Battery
C10
Class 2 serial data
Computer data lines system
D10
Dcm fuse 10 10a
Down
Down sig
Driver
Driver door module (below driver door switch)
Driver outside rearview mirror
Driver sig
Front passenger door module (below front passenger door switch)
G302 (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 sig
Pdm fuse 12 10a
Pnk
Rear fuse block
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 2002

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List of elements for 8-Way Adjustable Power Seat Wiring Diagram for Chevrolet TrailBlazer 2002:

C313
Driver power recline motor
Driver seat adjuster switch
Driver seat forward/ rearward motor
Driver seat front vertical motor
Driver seat rear vertical motor
Front passenger seat adjuster switch
Fwd
G302 (on left "b" pillar)
G303 (on right "b" pillar)
Hot at all times
Rear fuse block (below left rear seat)
Rwd
S302
S303
S318
Seats circuit breaker 30a
Tan

Lumbar Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Lumbar Wiring Diagram for Chevrolet TrailBlazer 2002:

Driver lumbar adjuster switch
Driver seat lumbar horizonal motor
Driver seat lumbar vertical motor
G302 (on left "b" pillar)
G303 (on right "b" pillar)
Hot at all times
Out
Passenger lumbar adjuster switch
Passenger seat lumbar horizonal motor
Passenger seat lumbar vertical motor
Pnk
Rear fuse block (below left rear seat)
S302
S303
S318
Seats circuit breaker 30a
Tan

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams, Long Wheel Base for Chevrolet TrailBlazer 2002

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List of elements for Power Top/Sunroof Wiring Diagrams, Long Wheel Base for Chevrolet TrailBlazer 2002:

A12
A12 hot with rap energized c3
Battery
Body control module (bcm) (beneath left rear seat, on rear fuse block)
Close
G302 (left "b" pillar)
G306 (rear of left rear door)
Gnd
Hot at all times
Nca
Open
Rap relay 22
Rear fuse block (below left rear seat)
S302
Sun roof module (above headliner, at rear of sun roof assembly)
Sun roof motor
Sun roof switch
Sunroof fuse 28 20a
Vent wdo fuse 20 20a

Power Top/Sunroof Wiring Diagrams, Short Wheel Base for Chevrolet TrailBlazer 2002

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List of elements for Power Top/Sunroof Wiring Diagrams, Short Wheel Base for Chevrolet TrailBlazer 2002:

A12
A12 hot with rap energized c3
Battery
Body control module (bcm) (beneath left rear seat, on rear fuse block)
Close
G306 (rear of left rear door)
Gnd
Hot at all times
Nca
Open
Rear fuse block (below left rear seat)
Sun roof module (above headliner, at rear of sun roof assembly) c1
Sun roof motor (above headliner, at rear of sunroof assembly)
Sun roof switch
Sunroof fuse 28 20a

POWER WINDOWS

Power Window Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Power Window Wiring Diagram for Chevrolet TrailBlazer 2002:

(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
Dcm fuse 10 10a
Down
Down input
Down output
Down signal output
Driver door module (below drivers door switch panel)
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
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 i/p
Splice pack sp206 (body harn, near onstar module)
Switch power
Switch pwr
Tan
Up input
Up output
Up signal output
Window dn
Window up

Rear Quarter Windows Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Rear Quarter Windows Wiring Diagram for Chevrolet TrailBlazer 2002:

A12
Body control module (bcm) (below left rear seat, on rear fuse block)
Close
G302 (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
S302
Vent wdo fuse 20a

RADIO

Base Radio Wiring Diagram, with Rear Seat Audio for Chevrolet TrailBlazer 2002

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List of elements for Base Radio Wiring Diagram, with Rear Seat Audio for Chevrolet TrailBlazer 2002:

(ground splice pack, near the right front of the lower console) g201
A/c system
A10
A11
A12
A13
A14
A15
A16
Am antenna
Am/fm
Antenna
B10
B11
B12
B13
B14
B15
Body control module
Coax
Computer data
Data lines
Enable sig
Fm antenna
Fm impedance matching module
Fm sig
G102 (left side of underhood compartment, near rear of underhood fuse block)
Ground
Hot at all times
Hvac b fuse 36 10a
Inflatable restraint steering wheel module coil
Lf door speaker
Lf door tweeter speaker
Lf out +
Lf out -
Lines system
Lr door speaker
Lr low level audio sig +
Lr low level audio sig -
Lr out +
Lr out -
Lr speaker out +
Lr speaker out -
Mode
Nca
Pnk
Radio
Radio ant
Radio antenna
Radio antenna module
Radio control signal
Radio fuse 41 15a
Rear fuse block
Rf door speaker
Rf door tweeter speaker
Rf out +
Rf out -
Rr door speaker
Rr low level audio sig +
Rr low level audio sig -
Rr out +
Rr out -
Rr speaker out +
Rr speaker out -
Serial data
Steering wheel controls assembly
Tan
U78
U84
Volume down
Volume up
Volume/ am/fm switch
Wiper/ washer system

Base Radio Wiring Diagram, without Rear Seat Audio for Chevrolet TrailBlazer 2002

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List of elements for Base Radio Wiring Diagram, without Rear Seat Audio for Chevrolet TrailBlazer 2002:

A/c system
A10
A11
A12
A13
A14
A15
A16
Am antenna
Am/fm
Antenna
B10
B11
B12
B13
B14
B15
Body control module
Coax
Computer data lines system
Enable sig
Fm antenna
Fm impedance matching module
Fm sig
G102 (left side of underhood compartment, near rear of underhood fuse block)
Ground
Hot at all times
I/p fuse block
Inflatable restraint steering wheel module coil
Lf door speaker
Lf door tweeter speaker
Lf out +
Lf out -
Lr door speaker
Lr out +
Lr out -
Mode
Nca
Pnk
Radio
Radio antenna
Radio antenna module
Radio control signal
Radio fuse 41 15a
Rf door speaker
Rf door tweeter speaker
Rf out +
Rf out -
Rr door speaker
Rr out +
Rr out -
Serial data
Steering wheel controls assembly
Tan
U78
U84
Volume down
Volume up
Volume/ am/fm switch
Wiper/ washer system

Premium Sound Radio Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Premium Sound Radio Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2002:

(ground splice pack, near the right front of the lower console) g201
A/c system
A10
A11
A12
A13
A14
A15
A16
Am antenna
Am/fm
Antenna
Auxiliary hvac control module (at rear of lower console)
B10
B11
B12
B13
B14
B15
Bare
Coax
Computer data
Computer data lines
Computer data lines system
Enable sig
Fm antenna
Fm impedance matching module
Fm sig
G102 (left side of underhood compartment, near rear of underhood fuse block)
Ground
Hot at all times
Hvac b fuse 36 10a
Inflatable restraint steering wheel module coil
Lf out +
Lf out -
Lines system
Lr low level audio sig +
Lr low level audio sig -
Lr out +
Lr out -
Mode
Nca
Pnk
Radio
Radio ant
Radio antenna
Radio antenna module (on right rear of headliner)
Radio control signal
Radio fuse 41 15a
Rear fuse block (beneath left rear seat)
Rf out +
Rf out -
Rr low level audio sig +
Rr low level audio sig -
Rr out +
Rr out -
S202
Serial data
Steering wheel controls assembly
System
Tan
U78
U84
Volume down
Volume up
Volume/ am/fm switch
Wiper/ washer system

Premium Sound Radio Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002

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List of elements for Premium Sound Radio Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2002:

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
Data lines
Drain wire
G401 (on lower left "d" pillar)
Ground
Hot at all times
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 -
Lr spkr out +
Lr spkr out -
Noise reduction microphone (in upper console)
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 -
Tan

SHIFT INTERLOCKS

Ignition Lock Solenoid for Chevrolet TrailBlazer 2002

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List of elements for Ignition Lock Solenoid for Chevrolet TrailBlazer 2002:

(closed in park)
A16
Automatic transmission shift lever (in center floor console)
G201
Hot in run & start
Ign 0 fuse 10a
Ignition lock solenoid (in steering column)
Inflatable restraint steering wheel module coil
Nca
Pnk
Rear fuse block (below left rear seat)
S320
Sp201 (right front of lower console)

Shift Interlock Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Shift Interlock Wiring Diagram for Chevrolet TrailBlazer 2002:

A/t shift lock control solenoid
B/u lamp fuse 15a
Btsi fuse 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)
Tcc/brake switch (above brake pedal, on bracket)
Transmission control
Underhood fuse block (on left side of engine compt)

STARTING/CHARGING

Charging Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Charging Wiring Diagram for Chevrolet TrailBlazer 2002:

(on upper left side of engine) powertrain control module (pcm)
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 l
Generator on signal
Hot at all times
Instrument panel cluster (ipc)
Ipc/dic fuse 24 10a
Nca
Not used
Of engine compt)
Red
S110
Splice pack sp205 (behind left side of i/p)
Starter solenoid
Under- hood fuse block (on left side of engine compt)

Starting Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Starting Wiring Diagram for Chevrolet TrailBlazer 2002:

A10
Acc
Batt
Battery
Crank fuse 17 10a
Crank volt
F10
F11
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 at run and start
Ign a fuse 34 40a
Ign e fuse 22 10a
Ignition switch
Lock
Nca
Off
P/n
Park/ neutral position (pnp) switch (on lower left side of transmision)
Pnk
Pnp switch
Powertrain control module (pcm) (on upper left side of engine)
Red
Run
S110
Start
Starter
Starter relay 47
Starter rly
Under- hood fuse block (left side of engine compt)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for Supplemental Restraint Wiring Diagram for Chevrolet TrailBlazer 2002:

(near the rear of the underhood fuse block) g102
(on the 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) (below left side of dash, right of steering column)
Driver seat
Ground
High control
Hot in on & start
Ignition
Inflatable restraint i/p module
Inflatable restraint sensing & diagnostic module (below passenger's seat)
Inflatable restraint steering wheel module
Inflatable restraint steering wheel module coil
Instrument panel cluster (ipc)
Left electronic frontal sensor (efs)
Left front inflatable restraint side impact module
Left inflatable restraint side impact sensor
Left seat belt switch
Low control
Low reference
Nca
Passenger seat
Pnk
Right electronic frontal sensor (efs)
Right front inflatable restraint side impact module
Right inflatable restraint side impact sensor
S232 (w/immobilizer)
S302
Shorting
Shorting bar
Signal
Solid state
Srs fuse 10a
Stage 1
Stage 2
Star connector #1 (behind the left i/p, near the headlamp switch connector)
Tan
Underhood fuse block (in the underhood compartment, above the left front wheel well)
Voltage

TRANSMISSION

4.2L

4.2L VIN S, A/T Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, A/T Wiring Diagram for Chevrolet TrailBlazer 2002:

4wd circuit (w/ 2-spd transfer case)
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 transmission (4l60-e)
Battery
Body control module (bcm) (beneath left rear seat)
C2 a7
Class 2 data
D2 c1
Data link connector (below left side of dash)
Down (3-2)
Downshift (3-2 shift) solenoid
E3 c2
Ect ref
Ect sig
Engine coolant temperature sensor (left front of engine block, near generator)
Etc fuse 10a
F12
Fuel injectors
G108 (lower left side of engine block)
Ground
Hot at all times
Hot in accy, run or start
Hot in run or start
Ign 0 fuse 10a
Ignitioin 1
Ignition
Ignition 1
Ing e fuse 10a
Instrument panel cluster (ipc)
Mil ind
Park/neutral position switch (left side of transmission)
Passlock sensor (in ignition lock cylinder case)
Pcm 1 fuse 15a
Pcm b fuse 20a
Pcs sol (hi)
Pcs sol (lo)
Pnk
Powertrain control module (upper left side of engine)
Pressure switch manifold
Prndl a in
Prndl b in
Prndl c in
Prndl p in
Rear fuse block (below left rear seat)
Red
S232 (dash harn, near breakout to steering column)
S239
Service engine soon
Shift a (1-2 shift) solenoid
Shift b (2-3 shift) solenoid
Ss a (1-2)
Ss b (2-3)
Star connector 1 (behind left side of dash)
Stop fuse 15a
Stoplamp in
Tan
Tcc
Tcc pmw solenoid
Tcc pwm
Tcc solenoid
Tcc/brake switch, traction control switch, multi-function switch, headlamp leveling switch, rearview mirror
Tfp sw a
Tfp sw b
Tfp sw c
Tft ref
Tft sig
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
Transmission fluid temperature sensor
Underhood fuse block (left side of engine compt)
Variable bleed solenoid
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

4.2L VIN S, Transfer Case Wiring Diagram for Chevrolet TrailBlazer 2002

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List of elements for 4.2L VIN S, Transfer Case Wiring Diagram for Chevrolet TrailBlazer 2002:

(below left side of dash) data link connector
(dash harn, near breakout to steering column) s232
(in ignition lock cylinder case) passlock sensor
(lower left side of engine block)
+5v ref
1.1k
2 hi
2 hi ind
2.2k
2wd
4 hi
4 hi ind
4 lo
4 lo ind
4wd fuse 15a
4wd lo sig
5.1k
Afwd
Afwd ind
Atc fuse 25a
Axle act
Axle sw
B11
Battery
Brake
C2 c2
Calss 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 engine 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 (upper left side 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
S239
Service fwd
Sp201 (right front of lower console)
Star connector 1 (behind left side of dash)
Sw sig
Tan
Tcc/brake switch, traction control switch, multi-function switch, headlamp leveling switch, rearview mirror
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