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

Radio Output, Door and Ignition Switches


Object Number: 576262  Size: FS
Audible Warnings Components
Audible Warnings Circuit Description
Seat Belt and Headlamp Switches
Class 2 Serial Data Line (LH Drive)
Radio Amplifier (w/UX8)
Radio Amplifier (UX9)
Radio Amplifier (w/UY4)
DDM Power, Ground, Inputs, and Outputs
G201 (Partial)
G201 (Partial)
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Seat Belt and Headlamp Switches


Object Number: 576263  Size: FS
Audible Warnings Components
Audible Warnings Circuit Description
Fasten Seat Belt Switch and Indicator
Class 2 Serial Data Line (RH Drive)
Headlamp Switch, PRK LP Relay
Headlamp Switch, PRK LP Relay
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Radio Output, Door and Ignition Switches