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

Power, Ground, and Blower Controls


Object Number: 1434440  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Compressor Controls and Serial Data
Fuse Block - Underhood BATT MAIN 1 Fuse, Fuse Block - I/P PK LAMPS, DISPLAYS, CHMSL/BKUP, INT LIGHT, RFA/MOD, RADIO/AMP, ONSTAR/ALDL, HVAC, and CANISTER Fuses and PK LP Relay
Fuse Block - Underhood ABS, TRANS SOL, PCM, SIR, and DISPLAY Fuses, CRANK Relay, and Fuse Block - I/P CRUISE SW Fuse
Fuse Block - Underhood BATT MAIN 3, BATT MAIN 4, ABS MTR, ABS SOL, PCM/ETC, TCM, WASHER/RVC, AUX PWR, and AIR PUMP Fuses, Fuse Block- I/P REAR WINDOW DEFOGGER Relay and HTD MIRROR Fuse
I/P, Console, and Driver Door Lighting
G202
G200
Figure 2:

Compressor Controls and Serial Data


Object Number: 1434444  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Mode and Air Temperature Controls
Power, Ground, and Blower Controls
Fuse Block - Underhood B+ Bus
L26
G115 (L26)
Figure 3:

Mode and Air Temperature Controls


Object Number: 1434446  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Control Module References
Compressor Controls and Serial Data