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

Front Frame and Underbody Components (LHD NV7)


Object Number: 2174871  Size: LF
(1)M72 Variable Power Steering Solenoid Valve
Figure 2:

Front Frame and Underbody Components (LHD NJI)


Object Number: 2174872  Size: LF
(1)X1 Power Steering Control Module X1
(2)X2 Power Steering Control Module X2
(3)K43 Power Steering Control Module
Figure 3:

Front Frame and Underbody Components (NJI RHD)


Object Number: 2174873  Size: LF
(1)K43 Power Steering Control Module
(2)X1 Power Steering Control Module X1
(3)X2 Power Steering Control Module X2
Figure 4:

Front Frame and Underbody Components (NV7 RHD)


Object Number: 2174875  Size: LF
(1)M72 Variable Power Steering Solenoid Valve