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

Steering Wheel Controls (3-Spoke)


Object Number: 1786765  Size: FS
Master Electrical Component List
Cruise Control Description and Operation
Control Module References
Steering Wheel Controls (4-Spoke)
Underhood Fuse Block IBCM (RUN/CRANK) Fuse, Body Control Module (BCM) AIR BAG (IGN), EPS and RUN/CRANK Fuses
Switches
G201
Cruise Control Schematic Icons
G201
Cruise Control Schematic Icons
Low Speed Serial Data
Figure 2:

Steering Wheel Controls (4-Spoke)


Object Number: 1786778  Size: FS
Master Electrical Component List
Cruise Control Description and Operation
Control Module References
Brake Pedal Position Sensor and Stop Lamp Switch Signal
Steering Wheel Controls (3-Spoke)
Underhood Fuse Block IBCM (RUN/CRANK) Fuse, Body Control Module (BCM) AIR BAG (IGN), EPS and RUN/CRANK Fuses
Switches
G201
G201
Cruise Control Schematic Icons
Cruise Control Schematic Icons
Figure 3:

Brake Pedal Position Sensor and Stop Lamp Switch Signal


Object Number: 1786781  Size: FS
Master Electrical Component List
Cruise Control Description and Operation
Control Module References
Steering Wheel Controls (4-Spoke)
Turn Signals and Stop Lamps
Turn Signals and Stop Lamps
Electronic Throttle Controls
Electronic Throttle Controls
Electronic Throttle Controls