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

Stop Lamp Switch and Valve Controls


Object Number: 655114  Size: FS
Master Electrical Component List
Transmission Component and System Description
Switch Inputs and PNP Switch
OBD II Symbol Description Notice
IGN ACC and RUN
HTR-A/C, Brake, and Cruise Fuses
HTR-A/C, Brake, and Cruise Fuses
Cruise Control
EBCM Power, Ground, and DLC
Figure 2:

Switch Inputs and PNP Switch


Object Number: 655115  Size: FS
Master Electrical Component List
Transmission Component and System Description
Tow/Haul Switch and VSS Inputs
Stop Lamp Switch and Valve Controls
OBD II Symbol Description Notice
G105, and G107
Figure 3:

Tow/Haul Switch and VSS Inputs


Object Number: 655116  Size: FS
Master Electrical Component List
Transmission Component and System Description
Switch Inputs and PNP Switch
OBD II Symbol Description Notice
Automatic Transmission Schematic Icons
G110 (1 of 2)
G100, G106, and G302