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

Underneath Rear of Vehicle


Object Number: 447324  Size: LF
(1)In-line Connector C309, Electronic Brake Control Harness to Wheel Speed Sensor (WSS)-LR Harness
(2)Electronic Brake Control Harness
(3)In-line Connector C306, Electronic Brake Control Harness to Wheel Speed Sensor (WSS)-RR Harness
Figure 2:

Wheel Speed Sensor (WSS) -- RF (LF Similar)


Object Number: 447321  Size: LF
(1)RF Wheel
(2)I/P Harness
(3)In-line Connector C172
(4)Wheel Speed Sensor (WSS)-RF Harness
(5)Wheel Speed Sensor (WSS)-RF Harness Connector to Wheel Speed Sensor (WSS)-RF (pigtail) (LF Similar)
Figure 3:

Front of Vehicle, Braking Components


Object Number: 850759  Size: LF
(1)Brake Fluid Level Switch
(2)Electronic Brake Control Module (EBCM), Brake Pressure Modulator Valve (BPMV)
(3)Engine Harness
(4)C171
(5)Wheel Speed Sensor (WSS)
(6)Brake Master Cylinder