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

Rear Chassis Components


Object Number: 1822405  Size: LF
(1)Suspension Position Sensor - Left Rear (Z55)
(2)Suspension Position Sensor - Right Rear (Z55)
(3)Frame
(4)Wheel Speed Sensor (WSS) - Right Rear
(5)Suspension Damper Solenoid - Right Rear (Z55)
(6)Automatic Level Control (ALC) Compressor Assembly (G69)
(7)Suspension Damper Solenoid - Left Rear (Z55)
(8)Wheel Speed Sensor (WSS) - Left Rear
Figure 2:

Left Front Corner of the Engine Compartment


Object Number: 1842089  Size: LF
(1)Automatic Level Control (ALC) Relay (Z55/G69)
(2)Fuse Block - Underhood