GM Service Manual Online
For 1990-2009 cars only

Object Number: 515547  Size: SH

The position sensors provide the ESC module with the body to wheel displacement input. The ESC module uses this and other inputs in order to control the position of the shock absorber solenoids. If any body or wheel motion is detected, the ESC module will determine how soft or firm each shock absorber should be to provide the best ride. The position sensors are mounted at each corner of the vehicle between the control arm and the body.