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

Electronic Variable Orifice Solenoid


Object Number: 290122  Size: MF
(1)Power Steering Pump
(2)Electronic Variable Orifice (EVO) Solenoid
Figure 2:

Steering Wheel Position Sensor


Object Number: 290124  Size: MF
(1)Steering Wheel Position Sensor
(2)Steering Wheel Position Sensor Connector