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

Power, Ground and DLC


Object Number: 687601  Size: FS
Master Electrical Component List
Variable Effort Steering System Description and Operation
Steering Wheel Position Sensor
Underhood Electrical Center Bussing (1 of 2)
Power, Ground and DLC
Star Connectors
Figure 2:

Steering Wheel Position Sensor


Object Number: 687611  Size: FS
Master Electrical Component List
Variable Effort Steering System Description and Operation
Power, Ground and DLC
02 Y-CBrake Fluid Pressure Sensor,Lateral Accelerometer and Yaw Rate Sensor (JL4)
02 Y-CBrake Fluid Pressure Sensor,Lateral Accelerometer and Yaw Rate Sensor (JL4)