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

Electronic Variable Orifice (EVO) Solenoid Connector


Object Number: 629302  Size: MF
(1)Power Steering Pump
(2)Electronic Variable Orifice (EVO) Solenoid
Figure 2:

Steering Column Components (RTD)


Object Number: 623103  Size: MF
(1)Steering Column
(2)Steering Wheel Speed/Position Sensor