AIR CONDITIONING – Chevrolet TrailBlazer 2009 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2009

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2009:

• (in i/p harness, 15.5 cm from reciculation actuator connector)
• (in i/p harness, 5 cm from mode motor breakout)
• 5 volt ref
• A/c on ind
• A10
• A11
• A12
• Air temp door ctrl
• Air temp sens sig
• Ambient air temp
• Ambient air temperature sensor (on left center of radiator support)
• Ambient light
• Ambient light/ sun load sensor (on top center of dash, near base of windshield)
• B10
• B11
• B12
• Batt
• Batt pos volt
• Blower motor (below right side of dash)
• Blower motor control module (below right side of dash)
• Blwr fuse 35 40a
• Blwr mtr ctrl
• Blwr mtr spd ctrl
• Class 2
• Def door pos sig
• Defogger ind
• Defrost actuator (on upper dash carrier)
• Defrost door ctrl
• Dimming ctrl
• G102 (left side of engine compt, near rear of underhood fuse block)
• G201
• G302 (on lower left "b" pillar)
• Ground
• Hot at all times
• Hot in run
• Hvac control module (center of dash)
• Hvac i fuse 39 10a
• Hvac-b fuse 36 10a
• Ign 3 volt
• Inside air temp ctrl
• Inside air temp sig
• Inside air temperature sensor assembly (in left "b" pillar)
• Interior lights system
• J202
• J216
• J217
• J271 (in i/p harness, 14.5 cm from dash compt lamp breakout)
• J302
• L air temp sens sig
• Left air temperature actuator (below left center of dash)
• Left sensor
• Left temperature control
• Logic
• Low press sens sig
• Low reference
• Lower left air temperature sensor (left of lower console, in air duct)
• Lower right air temperature sensor (in right lower console, in air duct)
• Lwr rt air temp sig
• Mode actuator (behind upper left center of dash)
• Mode door ctrl
• Mode door pos sig
• Nca
• R air temp sens sig
• Rear fuse block (below left rear seat)
• Recirc dr cntrl
• Recirc dr pos sig
• Recirculation actuator (on right side of dash)
• Recirculation ind
• Red
• Right air temperature actuator (behind right center of dash)
• Right sensor
• Right temperature control
• Splice pack jx201 (at lower right front of lower console)
• Tan
• Temp dr pos sig
• Underhood fuse block (above left front wheelwell)
• Upper left air temperature sensor (left center of dash, in air duct)
• Upper right air temperature sensor (right center of dash, in air duct)

Automatic A/C Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2009

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2009:

• (left front of engine compt, on left side of radiator support) g103
• (not used)
• 5 volt ref
• A/c compressor clutch (on a/c compressor)
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of engine compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line, near a/c compressor)
• A/c relay 44
• A12
• Ambient light sens
• Aux blwr hi spd
• Aux blwr med spd
• Aux mode dr
• Auxiliary hvac control module (under lower console)
• Auxiliary mode actuator (under lower console)
• B11
• B12
• Batt
• Body control module (bcm) (beneath left rear seat, on rear fuse block)
• Class 2 data
• Comp rly cntrl
• Computer data lines system
• D11
• Data link connector (on bottom of left side of dash)
• Ect sens sig
• Engine control module (ecm) (4.2l: lower left front of engine) (5.3l & 6.0l: below battery)
• Engine coolant temperature (ect) sensor (5.3l & 6.0l: on left front of engine block, near generator) (4.2l: lower right rear of engine block)
• G107 (on lower left side of engine)
• G201
• Ground
• Hot at all times
• Hot in on or start
• Ign e fuse 22 10a
• J103
• J206
• J232 (w/ immobilizer) (in i/p harness, 10 cm from breakout to steering wheel coils)
• J307
• Logic
• Low ref
• Low reference
• Lt sunload sens sig
• Mode
• Off
• Rear blower motor (under center of dash)
• Rear blower resistor (attached to rear blower motor)
• Red
• Rt sunload sens sig
• Serial data
• Splice pack jx201 (at lower right front of lower console)
• Splice pack jx205 (behind left of dash, near headlamp switch connector)
• Underhood fuse block (above left front wheelwell)

Compressor Wiring Diagram for Chevrolet TrailBlazer 2009

List of elements for Compressor Wiring Diagram for Chevrolet TrailBlazer 2009:

• 5-volt reference
• A/c compressor clutch (on a/c compressor)
• A/c fuse 30 10a
• A/c lo press sens sig
• A/c low pressure switch (at right rear of engine compt, on accumulator)
• A/c refrigerant pressure sensor (on high pressure line, near a/c compressor)
• A/c relay 44
• A12
• B11
• Clutch rel ctrl
• Computer data lines system
• D11
• Engine control module (ecm) (4.2l: lower left front of engine) (5.3l & 6.0l: below battery)
• G103 (left front of engine compt, on left side of radiator support)
• G107 (on lower left side of engine)
• Hot at all times
• Hot in run or start
• Hvac control module (center of dash)
• Ign e fuse 22 10a
• J103
• Low reference
• Pressure sensor
• Serial data
• Underhood fuse block (above left front wheelwell)

Manual A/C Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2009

List of elements for Manual A/C Wiring Diagram (1 of 2) for Chevrolet TrailBlazer 2009:

• (below right side of dash, near blower motor) blower motor resistor assembly
• (in i/p harness (15.5 cm from reci- rculation actuator connector)
• (in i/p harness (5 cm from mode motor breakout)
• (not used)
• 5 volt ref
• A red
• A10
• A11
• A12
• B10
• B11
• B12
• Batt
• Blower motor (below right side of dash)
• Blower motor relay
• Blwr fuse 35 40a
• Class 2
• Control mode
• Defogger
• Defrost actuator (on upper dash carrier)
• Dimming ctrl
• Dr cntrl
• Dr ctrl
• Dr pos sig
• Enable control
• G102 (left side of engine compt, near rear of underhood fuse block)
• G201
• Ground
• High
• Hot at all times
• Hot in run
• Hvac b fuse 36 10a
• Hvac control module (center of dash)
• Hvac fuse 44 30a
• Hvac i fuse 39 10a
• Ign 3 volt
• Interior lights system
• J201
• J202
• J211
• J216
• J217
• J250
• Left air temperature actuator (below left center of dash)
• Left temperature control
• Logic
• Low
• Low reference
• Med1
• Med2
• Med3
• Mode actuator (behind upper left center of dash)
• Mode dr ctrl
• Motor control
• Off
• Rear fuse block (below left rear seat)
• Recirculation
• Recirculation actuator (on right side of dash)
• Red
• Right air temperature actuator (behind right center of dash)
• Right temperature control
• Sensor signal
• Splice pack jx201 (at lower right front of lower console)
• Tan
• Temp dr ctrl
• Under- hood fuse block (above left front wheelwell)
• Used) (not

Manual A/C Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2009

List of elements for Manual A/C Wiring Diagram (2 of 2) for Chevrolet TrailBlazer 2009:

• (left front of engine compt, on left side of radiator support) g103
• (lower left front of engine)
• (not used)
• 5 volt ref
• A/c compressor clutch (on a/c compressor)
• A/c fuse 30 10a
• A/c low pressure switch (at right rear of engine compt, on accumulator)
• A/c press sig
• A/c refrigerant pressure sensor (on high pressure line, near a/c compressor)
• A/c relay 44
• Auxiliary console mode actuator (under lower console)
• Auxiliary hvac control module (under lower console)
• Auxiliary hvac enable control
• Auxiliary mode door control
• Bi lvl
• Comp rly cntrl
• Computer data lines system
• D11
• Data link connector (on bottom left side of dash)
• Ect sens sig
• Engine control module (ecm)
• Engine coolant temperature (ect) sensor (lower right rear of engine block)
• Floor
• G107 (on lower left side of engine)
• G201
• Ground
• Hot at all times
• Hot in run or start
• Ign e fuse 22 10a
• Ignition 3 voltage
• Interior lights system
• J103
• J206
• J232 (w/ immobilizer) (i/p harness, 10 cm from breakout to steering wheel coils)
• J307
• Lamps dimming ctrl
• Lo ref
• Logic
• Low ref
• Power ind sig
• Pwr ind
• Serial data
• Splice pack jx201 (at lower right front of lower console)
• Splice pack jx205 (behind left of dash, near headlight switch connector)
• Underhood fuse block (above left front wheelwell)
• Upper