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

Cell 65: Heater A/C Control and LH Electric Actuator


Object Number: 308538  Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Vacuum/Electric Solenoid
Cell 64
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Interior Lights Dimming Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 2:

Cell 65: Vacuum/Electric Solenoid


Object Number: 308539  Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Air Delivery System
Cell 65: Heater A/C Control and LH Electric Actuator
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Figure 3:

Cell 65: Air Delivery System


Object Number: 308540  Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Vacuum/Electric Solenoid
Functional Check