GM Service Manual Online
For 1990-2009 cars only

Module Assembly Electronic Suspension Control Replacement Single Compressor

Removal Procedure

Caution: Do NOT remove an air supply pipe in an attempt to depressurize the air suspension. Always follow the Air Suspension Depressurization Procedure in Air Suspension. Failure to follow this procedure may cause personal injury or damage to the vehicle.

  1. Remove the compressor assembly from the vehicle and place on a bench. Refer to Compressor Assembly Automatic Level Control Air Replacement .

  2. Object Number: 1234301  Size: SH
  3. Disconnect the electrical connection (2).
  4. Remove the control module from the bracket.

Installation Procedure


    Object Number: 1234301  Size: SH
  1. Install the control module to the bracket.
  2. Connect the electrical connection (2).
  3. Install the compressor assembly to the vehicle. Refer to Compressor Assembly Automatic Level Control Air Replacement .
  4. Perform the suspension position calibration procedure. Refer to Suspension Position Calibration .

Module Assembly Electronic Suspension Control Replacement Dual Compressors

Removal Procedure

Caution: Do NOT remove an air supply pipe in an attempt to depressurize the air suspension. Always follow the Air Suspension Depressurization Procedure in Air Suspension. Failure to follow this procedure may cause personal injury or damage to the vehicle.


    Object Number: 1455965  Size: MH
  1. Remove the compressor assembly from the vehicle and place on a bench. Refer to Compressor Assembly Automatic Level Control Air Replacement .
  2. Disconnect the electrical connection (1).
  3. Remove the control module (2) from the bracket.

Installation Procedure


    Object Number: 1455965  Size: MH
  1. Install the control module (2) to the bracket.
  2. Connect the electrical connection (1).
  3. Install the compressor assembly to the vehicle. Refer to Compressor Assembly Automatic Level Control Air Replacement .
  4. Perform the suspension position calibration procedure. Refer to Control Module References for programming and setup information.