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

Rear Frame and Underbody - Short Wheelbase (SWB)


Object Number: 1380393  Size: MF
(1)Air Suspension Sensor - LR
(2)Air Suspension Sensor - RR
(3)Air Suspension Compressor Assembly
(4)Air Suspension Inflator Switch
(5)Frame
Figure 2:

Rear Frame and Underbody - Long Wheelbase (LWB)


Object Number: 1380395  Size: MF
(1)Air Suspension Compressor Assembly
(2)Air Suspension Inflator Switch
(3)Air Suspension Sensor - LR
(4)Air Suspension Sensor - RR
(5)Frame