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

Body Wiring to Body Side Trim Panel


Object Number: 357314  Size: MF
(1)Automatic Level Control (ALC) Solenoid Valve
(2)C471
(3)Body Side Trim
(4)S470
(5)Automatic Level Control (ALC) Timer Relay
(6)Automatic Level Control (ALC) Inflator Air Switch
(7)Accessory Power Outlet - Rear
Figure 2:

Body Wiring Views


Object Number: 357324  Size: MF
(1)C471
(2)C420
(3)Vacuum Hoses
(4)Automatic Level Control (ALC) Air Compressor
(5)Vehicle Communications Unit
Figure 3:

Automatic Level Control (ALC) Harness View


Object Number: 572118  Size: MF
(1)Automatic Level Control (ALC) Harness
(2)S471
(3)S473
(4)S474
(5)Automatic Level Control (ALC) Sensor Connector
(6)S472