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

Power, Ground, and Blower Controls


Object Number: 675216  Size: FS
Master Electrical Component List original
Air Temperature Description and Operation
Low Blower, Cruise and HVAC Fuses
HIGH BLOWER, HAZARD, STOP LAMPS, DOOR LOCKS, POWER MIRRORS Fuses
Compressor Controls
Ground G200
Ground G200
Figure 2:

Compressor Controls


Object Number: 675223  Size: FS
Master Electrical Component List original
Air Temperature Description and Operation
Low Blower, Cruise and HVAC Fuses
Low Blower, Cruise and HVAC Fuses
BTSI, Turn Signals/CORN LPS, Air Bag, Cluster, PCM/BCM/Crank/IGN Fuses
Grounds G113, G117, G119
COOL Fan 1, COOL Fan 2, Cool Fan 3, A/C CLU, IGN Main, and AIR Pump Relays
A/C, TP, MAP, ECT and IAT Sensors
Grounds G113, G117, G119
Ground G113
Figure 3:

Temperature Controls


Object Number: 665653  Size: FS
Master Electrical Component List original
Air Temperature Description and Operation
Air Delivery System (Electronic Controls)
Low Blower, Cruise and HVAC Fuses
INADV POWER BUS/RAP, BCM, RADIO/HVAC/RFA/CLUSTER/DATA LINK, CIGAR LTR/AUXPOWER/POWER DROP Fuses and RAP Relay
Low Blower, Cruise and HVAC Fuses
INADV POWER BUS/RAP, BCM, RADIO/HVAC/RFA/CLUSTER/DATA LINK, CIGAR LTR/AUXPOWER/POWER DROP Fuses and RAP Relay
Low Blower, Cruise and HVAC Fuses
I/P Lamp Dimmer Switch
Ground G200
Ground G200
Figure 4:

Air Delivery Controls


Object Number: 665658  Size: FS
Master Electrical Component List original
Air Delivery Description and Operation
Air Delivery System (Vacuum Controls)
Temperature Controls
Low Blower, Cruise and HVAC Fuses
Low Blower, Cruise and HVAC Fuses
Figure 5:

Air Delivery System (Vacuum Controls)


Object Number: 592726  Size: FS
Master Electrical Component List original
Air Delivery Description and Operation
Air Delivery System (Electronic Controls)