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

Wheel Speed Sensors (JM4/JL9)


Object Number: 1587730  Size: MF
(1)Wheel Speed Sensor (WSS) - LF
(2)Wheel Speed Sensor (WSS) - RF
(3)Wheel Speed Sensor (WSS) - RR
(4)Wheel Speed Sensor (WSS) - LR
Figure 2:

Left Side of the Engine Compartment


Object Number: 1546023  Size: LF
(1)Transmission Control Module (TCM) (MN5)
(2)Left Front Strut Tower
(3)Engine Control Module (ECM)
(4)Electronic Brake Control Module (EBCM) (JM4/JL9)
(5)Fuse Block - Underhood Bracket