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

Blower Motor - Controls, Ground and Power


Object Number: 1781806  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Control Module References
Ambient Air Temperature Sensor and Compressor Controls
Underhood Fuse Block IBCM 1 Fuse, BCM AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses and Ignition Switch
Underhood Fuse Block RBEC 2 Fuse and RUN RLY, BCM HVAC BLOWER HIGH and RUN Relays, HVAC BLOWER and HVAC CTRL (IGN) Fuses, Rear Fuse Block FUEL, PARK LPS and TRUNK Relays, DRV ST, EMISSION 2, FOLDING T
Underhood Fuse Block IBCM 1 Fuse, BCM AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses and Ignition Switch
Underhood Fuse Block IBCM 1 Fuse, BCM AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses and Ignition Switch
G201
G203
Figure 2:

Ambient Air Temperature Sensor and Compressor Controls


Object Number: 1781809  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Control Module References
Air Temperature and Mode Controls
Blower Motor - Controls, Ground and Power
Low Speed GMLAN Serial Data (1 of 2)
Underhood Fuse Block B+
Underhood Fuse Block B+
Power, Ground, High Speed GMLAN Serial Data
G106
G108 (LY7)
Figure 3:

Air Temperature and Mode Controls


Object Number: 1781811  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Ambient Air Temperature Sensor and Compressor Controls