GM Service Manual Online
For 1990-2009 cars only

Automatic Level Control Sensor/Module Replacement/Reprogramming

If the automatic level control sensor/module assembly is replaced or needs to be reprogrammed, the following procedures must be performed:

    • Automatic level control sensor/module programming--Refer to Service Programming System (SPS) .
    • Revise the trim set calibration using the scan tool ALC Trimset Special Function. Refer to Suspension Position Calibration