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

Dimming Control


Object Number: 397770  Size: FS
Lighting Systems Components
Interior Lights Dimming Circuit Description
Instrument Panel and Console Dimming
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Battery Voltage to the Rear Fuse Block
Battery Voltage to the Rear Fuse Block
Temperature Sensors W/CJ2
G201 (1 of 3)
Instrument Panel and Console Dimming
G201 (1 of 3)
Figure 2:

Instrument Panel and Console Dimming


Object Number: 397772  Size: FS
Lighting Systems Components
Interior Lights Dimming Circuit Description
Front Door Dimming
Dimming Control
Dimming Control
Steering Column Dimming
G200 (1 of 2)
G201 (1 of 3)
Figure 3:

Front Door Dimming


Object Number: 397773  Size: FS
Lighting Systems Components
Interior Lights Dimming Circuit Description
Steering Column Dimming
Instrument Panel and Console Dimming
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Simple Bus Interface
Figure 4:

Steering Column Dimming


Object Number: 397805  Size: FS
Lighting Systems Components
Interior Lights Dimming Circuit Description
Front Door Dimming
SIR Caution
SIR Caution
Instrument Panel and Console Dimming
G200 (1 of 2)
G200 (1 of 2)