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

Keyless Entry


Object Number: 1891599  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation (without Accessory 2 Way Remote)
Control Module References
Universal Garage Door Opener
Figure 2:

Universal Garage Door Opener


Object Number: 1891600  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation (without Accessory 2 Way Remote)
Control Module References
Keyless Entry