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

Power, Ground, Brake Pressure Modulator Valve, and Wheel Speed Sensors


Object Number: 1217880  Size: FS
Master Electrical Component List
ABS Description and Operation
Brake Pedal Position Sensor, Traction Control Switch, and Data Link Communications
Fuse Block Underhood Bussing
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
Fuse Block - Underhood - ABS, EPS, LH HIGH LH LOW PCM, RH HIGH, RH LOW Fuses
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
G109
Figure 2:

Brake Pedal Position Sensor, Traction Control Switch and Data Link Communications


Object Number: 1443430  Size: FS
Master Electrical Component List
ABS Description and Operation
Power, Ground, Brake Pressure Modulator Valve, and Wheel Speed Sensors
Low Speed Serial Data
Power, Ground and High Speed Serial Data
G304 and G305