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 Dimming Communication
HVAC Air Delivery/Temperature Control Sensors
Instrument Panel Dimming
DIMR and Audio Fuses
Right PRK LP and Left PRK LP Fuses
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
02 Ksp Horns
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
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
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
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
G302 1 of 3
G302 1 of 3
G302 1 of 3