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

Garage Door Opener


Object Number: 1803235  Size: FS
Master Electrical Component List
Garage Door Opener Description and Operation
Control Module References
Keyless Door Entry
Courtesy Lamps
Overhead Lighting
Overhead Lighting
G302
Figure 2:

Keyless Entry


Object Number: 1803240  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Control Module References
Garage Door Opener
Fuse Block - Underhood BATT MAIN 1 Fuse
Fuse Block - Underhood BATT MAIN 1 Fuse
Data Link Connector Schematics L26
Data Link Connector (DLC) Schematics LY7
G302
Body Rear End
Indicator Actuators