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

HVAC: Underhood Accessory Wiring Junction, Heater A/C Controls


Object Number: 477184  Size: FS
Power Distribution Schematics
OBD II Symbol Description Notice
Power Distribution Schematics
Fuse Block Schematics
Fuse Block Schematics
Handling ESD Sensitive Parts Notice
HVAC: Fuse Block, Auxiliary Heater A/C Controls
Ground Distribution Schematics
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
HVAC: Fuse Block, Auxiliary Heater A/C Controls
Figure 2:

HVAC: Fuse Block, Auxiliary Heater A/C Controls


Object Number: 477181  Size: FS
HVAC: Underhood Accessory Wiring Junction, Heater A/C Controls
Power Distribution Schematics
Fuse Block Schematics
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
HVAC: Underhood Accessory Wiring Junction, Heater A/C Controls
C60/C34 HVAC Vacuum Harness Schematics
Figure 3:

C60/C34 HVAC Vacuum Harness Schematics


Object Number: 477192  Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
HVAC: Fuse Block, Auxiliary Heater A/C Controls