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

Heater AC Control W/CJ2


Object Number: 401451  Size: FS
HVAC Components
HVAC Compressor Controls Circuit Description
Compressor Control W/CJ2
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Battery Voltage to the Rear Fuse Block
ABS and IGN 3 Fuses (Rear Fuse Block)
Instrument Panel and Console Dimming
G201 (1 of 3)
G201 (1 of 3)
G200 (1 of 2)
G200 (1 of 2)
Serial Data Class 2
Figure 2:

Compressor Control W/CJ2


Object Number: 401439  Size: FS
HVAC Components
HVAC Compressor Controls Circuit Description
Heater AC Control W/CJ2
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Serial Data Class 2
Sensors
Sensors
G100 and G102