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

Power, Ground, Serial Data and Blower Controls


Object Number: 2137298  Size: FS
Figure 2:

HVAC Faceplate


Object Number: 2172348  Size: FS
Figure 3:

Mode and Temperature Controls


Object Number: 2137306  Size: FS
Figure 4:

Compressor Controls (LLU)


Object Number: 2137320  Size: FS
Figure 5:

Compressor Controls (LDE/2H0)


Object Number: 2137313  Size: FS
Figure 6:

Compressor Controls (LCD/LBX/LBS)


Object Number: 2137346  Size: FS
Figure 7:

Compressor Controls (LBY)


Object Number: 2137350  Size: FS
Figure 8:

Compressor Controls (LDK)


Object Number: 2137332  Size: FS
Figure 9:

Compressor Controls (LBW)


Object Number: 2137340  Size: FS
Figure 10:

Air Quality Sensor


Object Number: 2180348  Size: FS
Figure 11:

Auxiliary Heater


Object Number: 2137353  Size: FS