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

Garage Door Opener


Object Number: 1778128  Size: FS
Master Electrical Component List
Garage Door Opener Description and Operation
Control Module References
B+ Bus - Underhood Fuse Block - 1 of 2
Outside Rearview Mirror Schematics
Dome Lamp, Footwell Courtesy Lamps, and Vanity Mirror Lamps
Dome Lamp, Footwell Courtesy Lamps, and Vanity Mirror Lamps
G106
Figure 2:

Keyless Entry


Object Number: 1778453  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Control Module References
B+ Bus - Underhood Fuse Block - 1 of 2
Power Door Locks