GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: When you are servicing the automatic level control sensor link, ensure that the sensor link and the sensor arm are not damaged. Ensure the sensor arm and the sensor link are properly oriented. Improper orientation of the sensor arm and the sensor link may cause damage to the automatic level control system or the vehicle.

  1. Remove the ELC/TRAILER fuse.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the automatic level control sensor connector.
  4. Remove the automatic level control sensor connector from the underbody rail.

  5. Object Number: 378900  Size: SH
  6. Remove the automatic level control sensor link from the tie rod ball stud. Refer to Automatic Level Control Sensor Link Replacement .

  7. Object Number: 343463  Size: MH
  8. Remove the automatic level control sensor bracket bolts/screws.
  9. Remove the automatic level control sensor with the bracket (2) from the vehicle.

  10. Object Number: 380450  Size: SH
  11. Remove the automatic level control sensor bolts/screws.
  12. Remove the automatic level control sensor from the bracket.

Installation Procedure


    Object Number: 380450  Size: SH
  1. Install the automatic level control sensor to the bracket.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the height sensor bolts/screws.
  4. Tighten
    Tighten the height sensor bolts/screws to 4 N·m (35 lb in).


    Object Number: 343463  Size: MH
  5. Install the automatic level control sensor with the bracket (2) to the vehicle.
  6. Install the height sensor bracket bolts/screws.
  7. Tighten
    Tighten the height sensor bracket bolts/screws to 10 N·m (89 lb in).


    Object Number: 378900  Size: SH
  8. Install the automatic level control sensor link to the tie rod ball stud. Refer to Automatic Level Control Sensor Link Replacement .
  9. Install the automatic level control sensor connector to the underbody rail.
  10. Install the automatic level control sensor connector.
  11. Lower the vehicle.
  12. Install the ELC/TRAILER fuse.