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

Radio Output, LH Front Door Open Signal, and Key-In-Ignition Signal


Object Number: 524660  Size: FS
Audible Warnings Components
Audible Warnings Description
Seat Belt Switch Signal and Park Lamp Signal
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Serial Data Class 2 (1 of 3)
Driver Door Module (DDM) Power, Gd., Inputs and Outputs
G201 - Steering Column
G201 - Steering Column
Figure 2:

Seat Belt Switch Signal and Park Lamp Signal


Object Number: 524669  Size: FS
Audible Warnings Components
Audible Warnings Description
Radio Output, LH Front Door Open Signal, and Key-In-Ignition Signal
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Serial Data Class 2 (1 of 3)
Fasten Seat Belt Switch and Indicator
Headlamp Switch, Park Lamp Relay
Headlamp Switch, Park Lamp Relay
Headlamp Switch, Park Lamp Relay
Headlamp Switch, Park Lamp Relay