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

Heater AC Control


Object Number: 401435  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Blower Control
IGN 3 RR, ABS, HVAC Fuses (Fuse Block-Rear)
Battery Feed to the Fuse Block-Rear
Serial Data Class 2
G201 (1 of 2)
G201 (1 of 2)
Engine Oil and Oil Filter Replacement
G201 (1 of 2)
Figure 2:

Blower Control


Object Number: 631105  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
G201 (1 of 2)
Compressor Control W/LX5 (V6)
Heater AC Control
Battery Feed to the Fuse Block-Rear
Figure 3:

Compressor Control W/LX5 (V6)


Object Number: 401437  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Compressor Control W/L47 (V8)
Serial Data Class 2
G100 and G102, LX5
Fuel Pressure Sensor and EVAP Canister Purge Vent Valve
Blower Control
Battery Feed to the Fuse Block-Underhood
Figure 4:

Compressor Control W/L47 (V8)


Object Number: 479586  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
A/C Orifice Solenoid
Compressor Control W/LX5 (V6)
Serial Data Class 2
G100 and G102, LX5
Battery Feed to the Fuse Block-Underhood
Figure 5:

A/C Orifice Solenoid


Object Number: 410580  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Air Delivery
Battery Feed to the Fuse Block-Underhood
Compressor Control W/L47 (V8)
G103
G103
G103
Figure 6:

Air Delivery


Object Number: 631107  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Air Temperature Sensors
Battery Feed to the Fuse Block-Rear
IGN 3 RR, ABS, HVAC Fuses (Fuse Block-Rear)
A/C Orifice Solenoid
Figure 7:

Air Temperature Sensors


Object Number: 631106  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Steering Wheel Controls
Air Delivery
Headlamp Switch and Sunload Assembly
Dimming Control
Figure 8:

Steering Wheel Controls


Object Number: 479584  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Air Temperature Sensors