GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Antilock Brake System Schematics
Figure 1:

ABS Power and Ground
Object Number: 2081240 Size: FS
Figure 2:

Wheel Speed Sensors
Object Number: 2081241 Size: FS
Figure 3:

Yaw and Lateral Acceleration, Steering Angle Sensor
Object Number: 2081242 Size: FS