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

Left Rear of the Engine Compartment (Heavy Duty)


Object Number: 886073  Size: MF
(1)C109
(2)Brake Fluid Level Switch Connector
Figure 2:

Power Brake (PB) Booster Fluid Alarm Switches Harness Routing (UJ1)


Object Number: 883605  Size: MF
(1)Power Brake (PB) Booster Fluid Pressure Alarm Switch Connector
(2)C141
(3)Power Brake (PB) Booster Fluid Flow Alarm Switch - C1, C2
Figure 3:

I/P Harness Routing - Left Side of the Passenger Compartment


Object Number: 883611  Size: MF
(1)Park Brake Switch
(2)Park Brake Switch Connector
(3)C220
(4)C311
(5)C318
Figure 4:

Frame and Underbody


Object Number: 1651182  Size: LF
(1)Wheel Speed Sensor (WSS) - Left Rear (JL4)
(2)Rotor - Left Rear
(3)Rotor - Left Front
(4)Wheel Speed Sensor (WSS) Connector - Left Front
(5)Electronic Brake Control Module (EBCM)
(6)Brake Pressure Differential Switch (Light Duty)
(7)Floor Panel - Right Front
(8)Yaw and Lateral Acceleration Sensor (JL4)
(9)Wheel Speed Sensor (WSS) Connector - Right Front
(10)Rotor - Right Front
(11)Rotor - Right Rear
(12)Wheel Speed Sensor (WSS) - Right Rear (JL4)