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

Keyless Entry


Object Number: 1888475  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation (without Accessory 2 Way Remote)
Control Module References
Garage Door Opener
Fuse Block - Underhood Bussing
HDLP MDL, DISPLAY, LT SPOT, and RT SPOT Fuses
Power, Ground, and Low Speed GMLAN Serial Data
Door Lock Actuators
Turn Signal, Hazard, and Stop Lamps Inputs
Release Systems Schematics
G202, and G204
Figure 2:

Garage Door Opener


Object Number: 1888516  Size: FS
Master Electrical Component List
Garage Door Opener Description and Operation
Control Module References
Keyless Entry
Fuse Block - Underhood Bussing
ONSTAR, INT LTS/PNL DIM, LT T/SIG, RT T/SIG, CHMSL/BCK-UP, INT LIGHTS, RVC SEN, and ECM/TCM Fuses
ONSTAR, INT LTS/PNL DIM, LT T/SIG, RT T/SIG, CHMSL/BCK-UP, INT LIGHTS, RVC SEN, and ECM/TCM Fuses
G301