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

Power, Ground, Indicators, Brake Pressure Modulator Valve, Brake Pedal Position (BPP) Sensor, and Traction Control Switch (TCS)


Object Number: 1892743  Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Brake Pedal Position Sensor, Traction Control Switch, and Stop Lamp Switch Signal
Figure 2:

Wheel Speed Sensors


Object Number: 1892762  Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Stability Control Sensors (JL4)
Figure 3:

Stability Controls Sensors (JL4)


Object Number: 1892758  Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Wheel Speed Sensors
Brake Pedal Position Sensor, Traction Control Switch, and Stop Lamp Switch Signal