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

HVAC Module, Power, Ground, Serial Data, and Temperature Actuators


Object Number: 2034191  Size: FS
Figure 2:

Mode and Recirculation Actuators


Object Number: 2034190  Size: FS
Figure 3:

Blower and Compressor Controls


Object Number: 2075655  Size: FS
Figure 4:

Temperature Sensors


Object Number: 2075661  Size: FS