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

Keyless Entry (w/o HP7)


Object Number: 1808264  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Control Module References
Universal Garage Door Opener
Underhood Fuse Block RBEC1 and Rear Fuse Block , BCK/UP Lamps, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM RR DEFOG and S/ROOF Fuses
Underhood Fuse Block RBEC1 and Rear Fuse Block , BCK/UP Lamps, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM RR DEFOG and S/ROOF Fuses
Low Speed Serial Data
Release System Schematics
Door Lock Actuators
G301
G101 and G102
Figure 2:

Keyless Entry - HP7


Object Number: 1872208  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Control Module References
Universal Garage Door Opener
Keyless Entry
Underhood Fuse Block RBEC1 and Rear Fuse Block , BCK/UP Lamps, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM RR DEFOG and S/ROOF Fuses
Underhood Fuse Block RBEC1 and Rear Fuse Block , BCK/UP Lamps, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM RR DEFOG and S/ROOF Fuses
Low Speed Serial Data
Release System Schematics
Door Lock Actuators
G301
G101 and G102
Figure 3:

Universal Garage Door Opener


Object Number: 1808267  Size: FS
Master Electrical Component List
Garage Door Opener Description and Operation (One LED)
Control Module References
Keyless Entry
Underhood Fuse Block RBEC1 and Rear Fuse Block , BCK/UP Lamps, CIG/AUX, HTD MIR, HTD SEAT, RKE/XM RR DEFOG and S/ROOF Fuses
G305
G305