GM Service Manual Online
For 1990-2009 cars only

Radiator Grille Guard Replacement Diamond Edition

Removal Procedure


    Object Number: 643461  Size: SH
  1. Remove the skid plate from the grille guard assembly.
  2. Remove 2 bolts and spacers securing the grille guard to the front bumper impact bar.
  3. Remove 2 bolts securing the grille guard assembly to the lower grille guard adjust bracket.
  4. Disconnect the electrical connectors from the fog lamp assemblies.
  5. Remove the grille guard assembly.
  6. Remove each fog lamp assembly by removing 2 bolts.
  7. Remove 2 bolts securing the lower grille guard adjust bracket to the lower grille guard bracket.
  8. Remove 4 bolts securing the lower grille guard to the left and right front body mounts
  9. Remove the lower grille guard bracket.

Installation Procedure

    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.


    Object Number: 643461  Size: SH
  1. Install the lower grille guard to the left and right front body mounts with 4 bolts.
  2. Tighten
    Tighten the lower grille guard bolts to 45 N·m (33 lb ft).

  3. Install the lower grille guard adjust bracket to the lower grille guard bracket with 2 bolts.
  4. Tighten
    Tighten the adjust bracket bolts to 45 N·m (33 lb ft).

  5. Install each for lamp assembly to the grille guard with 2 bolts.
  6. Tighten
    Tighten the fog lamp bolts to 9 N·m (7 lb ft).

  7. Connect the electrical connectors to the fog lamp assemblies.
  8. Install the grille guard assembly to the lower grille guard adjust bracket with 2 bolts.
  9. Tighten
    Tighten the grille guard bolts to 45 N·m (33 lb ft).

  10. Install the grille guard to the front bumper impact bar with 2 bolts and spacers.
  11. Tighten
    Tighten the grille guard bolts to 45 N·m (33 lb ft).

  12. Install the skid plate to the grille guard assembly.