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

Garage Door Opener


Object Number: 1750424  Size: FS
Master Electrical Component List
Garage Door Opener Description and Operation (One LED)
Control Module References
Keyless Entry Schematics
Right Rear Fuse Block B+ Bus
Courtesy Lamps
G401 (2 of 3)
Figure 2:

Keyless Entry


Object Number: 1750428  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation without Accessory 2 Way Remote
Control Module References
Garage Door Opener Schematics
Left Rear Fuse Block B+ Bus
3RD ROW SW/RFA Fuse, AMP Fuse, ONSTAR TV/XM Fuse, RSA/RSE Fuse, and RSM Fuse
Low Speed GMLAN Serial Data 2 of 2
G401 (1 of 3)