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

Blower Controls


Object Number: 2062307  Size: FS
Figure 2:

A/C Compressor Controls


Object Number: 2062309  Size: FS
Figure 3:

Air Delivery and Temperature Controls


Object Number: 2062311  Size: FS
Figure 4:

Air Sensors


Object Number: 2062313  Size: FS
Figure 5:

Auxiliary Blower Motor (C57)


Object Number: 2062315  Size: FS