GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Failure to observe the following procedure when handling energy absorbers could cause personal injury.

       • Do not apply heat to an energy absorber.
       • Do not weld in the area of an energy absorber.
       • Do not attempt to repair a damaged energy absorber. Always replace the damaged energy absorber with a new part.
       • If an energy absorber is bound-up as a result of a collision such that it cannot extend, take precautions to avoid spring-back when bending sheet metal. Provide a positive restraint, such as a chain or cable to hold the bumper in the position it is in. Wear approved safety glasses and using a 3mm (1/8 inch) drill bit, drill a small hole in the piston tube near the bumper bracket to relieve gas pressure. Remove the energy absorber after gas pressure has been relieved.
       • If an energy absorber is to be scrapped, relieve the gas pressure prior to disposal of the part. Make an indentation with a center punch in the small cylinder section of the energy absorber.

  1. Remove the front impact bar. Refer to Front Bumper Impact Bar Replacement .

  2. Object Number: 707984  Size: SH
  3. Remove the bolts (2) securing the front end diagonal brace to the hood latch bracket assembly and to the energy absorber unit.
  4. Remove the diagonal brace (1).

  5. Object Number: 707989  Size: SH
  6. Remove the nuts (2) securing the energy absorber (1) to the frame rail (3).
  7. Remove the energy absorber (1) from the frame rail by pulling outward.

Installation Procedure


    Object Number: 707989  Size: SH

    Important: The arrow on the energy absorber (1) needs to be positioned upward prior to installation.

  1. Install the energy absorber (1) to the frame rail (3).

  2. Object Number: 707984  Size: SH
  3. Position the diagonal brace (1) to the hood latch bracket assembly, and to the stud on the backside of the energy absorber.
  4. 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.

  5. Install the energy absorber nuts (2).
  6. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  7. Install the front impact bar. Refer to Front Bumper Impact Bar Replacement .