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

Right Front Wheel


Object Number: 576628  Size: LF
(1)Wheel Speed Sensor (WSS)-RF
(2)Pigtail Connector
Figure 2:

LR Engine Compartment


Object Number: 761640  Size: LF
(1)Brake Fluid Level Switch
(2)Cruise Control Module
(3)Electronic Brake Control Module (EBCM)
Figure 3:

Rear Wheel Speed Sensors


Object Number: 305363  Size: SH
(1)Wheel Speed Sensor-LR (RR similar)
(2)Rear Strut