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

A/C Switch, A/C Compressor Control Module, and PCM


Object Number: 626070  Size: FS
HVAC Components
HVAC Compressor/Condenser Fan Circuit Description
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
HVAC Blower Control Schematic
Ashtray, Cigar Lighter, and Manual Selector Illumination Lamps
Cell 14: Junction Block 3
Cell 14: Junction Block 3
Cell 14: G200, G203, SP250 and SP650
Figure 2:

A/C Refrigerant Pressure Switch, A/C Compressor Clutch and A/C Compressor Control Module


Object Number: 626071  Size: FS
HVAC Components
HVAC Compressor/Condenser Fan Circuit Description
A/C Condenser Fan Motor, A/C Refrigerant Pressure Switch, Engine Main Relay
A/C Switch, A/C Compressor Control Module, and PCM
Handling ESD Sensitive Parts Notice
HVAC Blower Control Schematic
SP254 and SP261
SP254 and SP261
SP254 and SP261
Figure 3:

A/C Condenser Fan Motor, A/C Refrigerant Pressure Switch, Engine Main Relay


Object Number: 626073  Size: FS
HVAC Components
HVAC Compressor/Condenser Fan Circuit Description
A/C Refrigerant Pressure Switch, A/C Compressor Clutch and A/C Compressor Control Module
ABS, Alt, AM1, Def, D/L, ECU-B, HTR, OBD, Power, and Stop Fuses
ABS, Alt, AM1, Def, D/L, ECU-B, HTR, OBD, Power, and Stop Fuses
ABS, Alt, AM1, Def, D/L, ECU-B, HTR, OBD, Power, and Stop Fuses
SP254 and SP261
SP254 and SP261
Cell 14: Battery, G100, G101, G102, G103, and G104
Cell 14: Battery, G100, G101, G102, G103, and G104