GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Refer to Approved Equipment for Collision Repair Caution in the Preface section.


    Object Number: 926399  Size: SH
  1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling .
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Remove all related panels and components.
  4. Repair as much of the damage as possible to factory specifications. Refer to Dimensions - Body .
  5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .

  6. Object Number: 1337401  Size: SH
  7. Remove the front tie bar. Refer to Tie Bar Replacement .

  8. Object Number: 1337428  Size: SH

    Important: Do not damage any inner panels or reinforcements.

  9. Locate and drill out all factory welds. Note the number and location of the welds for installation of the front wheelhouse extension.

  10. Object Number: 1337430  Size: SH
  11. Remove the damaged front wheelhouse extension.

Installation Procedure


    Object Number: 1337431  Size: SH

    Important: If the location of the original plug weld holes can not be determined, space the plug weld holes every 40 mm (1 1/2 in) apart.

    Some panels may have structural weld-thru adhesive. It is necessary to replace the weld-thru adhesive with an additional spot weld between each factory spot weld.

  1. Drill 8-mm (5/16-in) plug weld holes in the service part as necessary in the locations noted from the original panel.
  2. Prepare all mating surfaces as necessary.
  3. Apply GM-approved Weld-Thru Coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair .

  4. Object Number: 1337433  Size: SH
  5. Position the front wheelhouse extension to the vehicle using 3-dimensional measuring equipment. Clamp the front wheelhouse extension into place.

  6. Object Number: 1337436  Size: SH
  7. Plug weld accordingly.

  8. Object Number: 1337405  Size: SH
  9. Replace the front tie bar. Refer to Tie Bar Replacement .

  10. Object Number: 1337423  Size: SH
  11. Clean and prepare all welded surfaces.
  12. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  13. Paint the repair area. Refer to Basecoat/Clearcoat Paint Systems .
  14. Install all related panels and components.
  15. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  16. Enable the SIR system. Refer to SIR Disabling and Enabling .