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

Class 2 Dimming Communication


Object Number: 795878  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Dimming Control
Overhead Console, Vanity, and Courtesy Lamps
Class 2 Serial Data (3 of 3)
Class 2 Serial Data (1 of 3)
Figure 2:

Dimming Control


Object Number: 795879  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Instrument Panel Dimming
Class 2 Communication
HVAC Air Delivery/Air Temperature Sensors
Instrument Panel Dimming
Rear Fuse Block- DIMR, S-DAR, and AUDIO Fuses
Rear Fuse Block- LP PK R and LP PK L Fuses, PRK LP Relay
Low Beam Headlamps (Domestic)
Low Beam Headlamps (Export)
Figure 3:

Instrument Panel Dimming


Object Number: 795880  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Steering Wheel Controls
Dimming Control
G201 (2 of 3)
G201 (2 of 3)
G200
G200
Steering Wheel Controls
Dimming Control
Console Dimming
Figure 4:

Steering Wheel Controls


Object Number: 795881  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Console Dimming
Instrument Panel Dimming
Lighting Systems Schematic Icons
G200
G201 (1 of 3)
G302 (2 of 3)
Horns Schematics
G200
Instrument Panel Dimming
Figure 5:

Console Dimming


Object Number: 795882  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Front Door Dimming
Steering Wheel Controls
G201 (3 of 3) and G202
G201 (3 of 3) and G202
G201 (2 of 3)
G201 (2 of 3)
G201 (2 of 3)
Instrument Panel Dimming
Figure 6:

Front Door Dimming


Object Number: 795883  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Middle Door Dimming
Console Dimming
Left Power Window
Right Power Window
Driver Door Power Door Lock
Right Front Door Power Door Lock
Memory Function Switch
Figure 7:

Middle Door Dimming


Object Number: 795885  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Rear Door Dimming
Front Door Dimming
Left Middle Door Power Window
Right Middle Door Power Window
Left Middle Door Power Door Lock (w/V4U)
Right Middle Door Power Door Lock (w/V4U)
G302 (2 of 3)
G201 (3 of 3) and G202
G302 (2 of 3)
Figure 8:

Rear Door Dimming


Object Number: 795886  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Middle Door Dimming
Rear Seats
Rear Seats
Left Power Window
Right Power Window
Left Rear Door Power Door Lock
Right Rear Door Power Door Lock (w/o B9Q)
G302 (1 of 3)
G302 (1 of 3)
G302 (1 of 3)