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

PARK LPS Fuse, Headlamp Switch and BCM


Object Number: 775568  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
IPC, Roof Beacon, and Rear Wheel Steering Switch
ABS, HAZ LP, STUD 1, HTD MIR, RR DEFOG, STUD 2, CTSY LP, and PARK LP Fuses
Park Lamp Control
Park Lamp Control
G203 - 2 of 3 - Base Except Crew Cab
G203 - 2 of 3 - Base Except Crew Cab
G203 - 1 of 3
Parklamp Controls - 1 of 3
IPC, Roof Beacon, and Rear Wheel Steering Switch
Figure 2:

IPC, Roof Beacon and Rear Wheel Steering Switch


Object Number: 775571  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Cargo/Fog Lamp Switch, DIC, and Steering Wheel Controls
PARK LPS Fuse, Headlamp Switch and BCM
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
SIR Disable Switch, Radio, and CD Player
Indicators
G203 - 1 of 3
G203 - 1 of 3
Power Take Off (PTO) Controls
PARK LPS Fuse, Headlamp Switch and BCM
Cargo/Fog Lamp Switch, DIC, and Steering Wheel Controls
Cargo/Fog Lamp Switch, DIC, and Steering Wheel Controls
Switch Inputs
G203 - 1 of 3
Figure 3:

Cargo/Fog Lamp Switch, DIC and Steering Wheel Controls


Object Number: 775573  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
SIR Disable Switch, Radio, and CD Player
IPC, Roof Beacon, and Rear Wheel Steering Switch
IPC, Roof Beacon, and Rear Wheel Steering Switch
02 GMT800 Fog Lamps Schematics
Courtesy Lamp Control - 2 of 2
G203 - 2 of 3 - Uplevel and Crew Cab
G203 - 1 of 3
SIR Disable Switch, Radio, and CD Player
IPC, Roof Beacon, and Rear Wheel Steering Switch
G103 and G105 - Gas
G103 and G105 - Gas
G103 and G105 - Gas
G203 - 2 of 3 - Uplevel and Crew Cab
G203 - 2 of 3 - Uplevel and Crew Cab
Figure 4:

SIR Disable Switch, Radio and CD Player


Object Number: 775574  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
Cargo/Fog Lamp Switch, DIC, and Steering Wheel Controls
Cargo/Fog Lamp Switch, DIC, and Steering Wheel Controls
IPC, Roof Beacon, and Rear Wheel Steering Switch
G203 - 1 of 3
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
Selectable Ride/Roof Beacon Switch
G200
G200
Figure 5:

HVAC Control Module/Blower Control Switch,Traction Control Switch and Transfer Case Shift Control Switch


Object Number: 775576  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Selectable Ride/Roof Beacon Switch
SIR Disable Switch, Radio, and CD Player
SIR Disable Switch, Radio, and CD Player
Selectable Ride/Roof Beacon Switch
IPC, Roof Beacon, and Rear Wheel Steering Switch
IPC, Roof Beacon, and Rear Wheel Steering Switch
Except Luxury
Speed Sensor Signals, Traction Control Switch (w/Traction Assist)
G203 - 2 of 3 - Base Except Crew Cab
G203 - 2 of 3 - Base Except Crew Cab
G200
G200
G203 - 1 of 3
Figure 6:

Selectable Ride/Roof Beacon Switch


Object Number: 798421  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
HVAC Control Module/Blower Control Switch, Traction Control Switch, and Transfer Case Shift Control Switch
SIR Disable Switch, Radio, and CD Player
G203 - 2 of 3 - Base Except Crew Cab
G203 - 1 of 3