GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Blower Motor, Module Power, Ground, and Serial Data


Object Number: 903253  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Compressor Controls and A/C Sensors
IGN E and PCM I Fuses
AMP, SUNROOF, VENT WDO, REAR WIPER, LGM 2, SEATS, LR/RR LOCKS Fuses Fuses
HVAC I, BRAKE and TBC RUN Fuses
HVAC I, BRAKE and TBC RUN Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
Data Link Communication
G201, 1 of 2
G101, G103, G106, and G110
G102, G104, G105, and G107
Figure 2:

Compressor Controls and A/C Sensors


Object Number: 876394  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Actuators
Blower Motor, Module Power, Ground, and Serial Data
IGN E and PCM I Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
I/P BATT, TRAILER ABS, HORN IGN A, IGN B, ATC Fuses
G102, G104, G105, and G107
G101, G103, G106, and G110
Data Link Communication
Figure 3:

Actuators


Object Number: 903255  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Rear HVAC
Compressor Controls and A/C Sensors
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
G201, 1 of 2
Figure 4:

Rear HVAC


Object Number: 876463  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Actuators
IGN 0, TBC IG, TBC ACC, FRT WIPER ,RAIN SEN, HVAC, 4WD Fuses
FLASHER, VEHICLE CHMSL, VEHICLE STOP TRLl L TURN, TRL R TURN, LEFT TURN, RIGHT TURN Fuses
G401, G402, and G403
G201, 1 of 2
Data Link Communication