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

Dimmer Controls, I/P Cluster Illumination, and Switch Indicators


Object Number: 831463  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Illumination - Rear Window, Garage Door Opener, Sunroof, HVAC Control, Headlamp, and Tow/Haul Switches
Illumination - Rear Window, Garage Door Opener, Sunroof, HVAC Control, Headlamp, and Tow/Haul Switches
CKT 1050, S213 and S301
CKT 1050, S203, S215, S302, S303, and S351
CKT 1050, S203, S215, S302, S303, and S351
Figure 2:

Illumination -- Rear Window, Garage Door Opener, Sunroof, HVAC Control, Headlamp, and Tow/Haul Switches


Object Number: 831464  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Illumination - Transfer Case Control, Height Control, Inflatable Restraint Disable, and Rear Heated Seat Switches, and PRNDL Lamps
Dimmer Controls, IP Cluster Illumination, and Switch Indicators
Dimmer Controls, IP Cluster Illumination, and Switch Indicators
Illumination - Transfer Case Control, Height Control, Inflatable Restraint Disable, and Rear Heated Seat Switches, and PRNDL Lamps
Power, BCM, PCM, Class 2, Stop Lamp Switch, Tow-Haul Switch, and Shift Solenoids
CKT 1050, S213 and S301
CKT 1050, S203, S215, S302, S303, and S351
CKT 1050, S203, S215, S302, S303, and S351
G302, G304, and G306
Figure 3:

Illumination -- Transfer Case Control, Height Control, Infaltable Restraint Disable, and Rear Heated Seat Switches, and PRNDL Lamps


Object Number: 831465  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Illumination - Traction Control, Steering Wheel Controls, and Rear Window Washer/Wiper Switches
Illumination - Rear Window, Garage Door Opener, Sunroof, HVAC Control, Headlamp, and Tow/Haul Switches
Illumination - Rear Window, Garage Door Opener, Sunroof, HVAC Control, Headlamp, and Tow/Haul Switches
Illumination - Traction Control, Steering Wheel Controls, and Rear Window Washer/Wiper Switches
CKT 1050, S203, S215, S302, S303, and S351
CKT 1050, S203, S215, S302, S303, and S351
Passenger Air Bag and Defeat Switch
CKT 1050, S213 and S301
CKT 1050, S203, S215, S302, S303, and S351
Figure 4:

Illumination -- Traction Control, Steering Wheel Controls, and Rear Window Washer/Wiper Switches


Object Number: 831466  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Driver Window, Door, and Seat Switches
Illumination - Transfer Case Control, Height Control, Inflatable Restraint Disable, and Rear Heated Seat Switches, and PRNDL Lamps
Illumination - Transfer Case Control, Height Control, Inflatable Restraint Disable, and Rear Heated Seat Switches, and PRNDL Lamps
G200
G200
SIR Caution for Zoning
Displays and Personalization Controls
Figure 5:

Driver Window, Door, and Seat Switches


Object Number: 849567  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
2003 N Truck Int. Lts. Dimming (Front Passenger Window, Door, and Seat Switches)
Illumination - Traction Control, Steering Wheel Controls, and Rear Window Washer/Wiper Switches
Power, Ground, DLC, and Splice Pack SP205
Front Door Windows
LBEC 1, LBEC 2, INFO, PDM, AUX PWR, DDM, LOCKS, TBC 2A, 2B, and 2C Fuses, and LT DOOR Circuit Breaker
LBEC 1, LBEC 2, INFO, PDM, AUX PWR, DDM, LOCKS, TBC 2A, 2B, and 2C Fuses, and LT DOOR Circuit Breaker
CKT 1050, S213 and S301
CKT 1050, S203, S215, S302, S303, and S351
CKT 1050, S203, S215, S302, S303, and S351
Driver Heated Seat
Figure 6:

Front Passenger Window, Door, and Seat Switches


Object Number: 849570  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Driver Window, Door, and Seat Switches
Power, Ground, DLC, and Splice Pack SP205
Front Door Windows
B+ Bus
LBEC 1, LBEC 2, INFO, PDM, AUX PWR, DDM, LOCKS, TBC 2A, 2B, and 2C Fuses, and LT DOOR Circuit Breaker
CKT 1050, S203, S215, S302, S303, and S351
CKT 1050, S203, S215, S302, S303, and S351
Front Passenger Heated Seat