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

Power, Ground, and Serial Data - 1 of 2


Object Number: 1787615  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Power, Ground and Serial Data 2 of 2
Underhood Fuse Block Park Lamp Relay/Fuses and Dimming Fuses
Underhood Fuse Block Park Lamp Relay/Fuses and Dimming Fuses
Headlamp Controls
Front Marker Lamps (w/TT7) and Front Park Lamps (w/o TT7)
Class 2 Serial Data Bus - LHD (2 of 2)
Overhead Courtesy Lamps, Dome Lamp, and Vanity Lamps
G402 (1 of 2)
Tap Up/Down Shift Lever (LHD)
G200
Steering Wheel Controls Dimming
G200
Turn Signal/Hazard Flasher Module
G201
Figure 2:

Power, Ground, and Serial Data - 2 of 2


Object Number: 1787672  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Steering Wheel Controls Dimming
Power, Ground and Serial Data 1 of 2
Left Rear Fuse Block Ign 3 Relay, LFRT HTD Seat MOD, MEM/ADAPT Seat, CCP, HDLP Leveling and IGN 3 Fuses
Right Rear Fuse Block IGN 1 Relay, Airbag, RIM, ABS, PSGR DR MOD, and TV/VICS Fuses
G200
Driver Door Module (DDM), Driver Door Switch Assembly (DDSA), Door Lock Switch and Latch Assembly
Front Power Window Switches and Motor
Rear Power Window Switches and Motors
G200
G201
Driver Door Module (DDM), Driver Door Switch Assembly (DDSA), Door Lock Switch and Latch Assembly
Front Power Window Switches and Motor
G201
Memory/Personalization Function Switch (A45)
Driver Door Module (DDM) Power, Ground and Serial Data
Class 2 Serial Data Bus - LHD (1 of 2)
Figure 3:

Steering Wheel Controls Dimming


Object Number: 1787691  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Control Module References
Power, Ground and Serial Data 2 of 2
Steering Wheel Controls - LP1/LY7 (2.8L/3.6L)
Lighting Systems Schematic Icons
Power, Ground and Serial Data 1 of 2
G200