GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2008 🢒 LaCrosse 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Antilock Brake System Schematics
Figure 1:

Power, Ground, Brake Pressure Modulator Valve (BPMV), Traction Control, and Serial Data
Object Number: 1889597 Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Active Brake and Stability Controls (JL4), and Brake Pedal Position (BPP) Sensor
Figure 2:

Wheel Speed Sensors
Object Number: 1889601 Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Controls JL4
Figure 3:

Active Brake, Stability Controls, and Brake Pedal Position (BPP) Sensor
Object Number: 1889599 Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Controls JL4
Power, Ground, Brake Pressure Modulator Valve (BPMV), Traction Control, and Serial Data