GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Envoy - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 HVAC Schematics
Figure 1:

Module Power, Ground, Serial Data, and Blower Motor
Object Number: 2081776 Size: FS
Figure 2:

Compressor Controls
Object Number: 2081782 Size: FS
Figure 3:

Air Delivery/Temperature Actuators
Object Number: 2081785 Size: FS
Figure 4:

Air Temperature Sensors
Object Number: 2081789 Size: FS
Figure 5:

Ambient Light/Sunload Sensors
Object Number: 2081799 Size: FS
Figure 6:

Rear Auxiliary Controls
Object Number: 2081801 Size: FS