GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


Object Number: 690554  Size: SH

Warning: Refer to Foam Sound Deadeners Warning in the Preface section.

Note: Both the driver-side and passenger-side front wheelhouses are available as complete assemblies with the strut tower attached to the wheelhouse. The strut mounting holes are pre-punched in the service part, which also includes all necessary component stud mounts. When replacing a wheelhouse, carefully position the service assembly. Use 3-dimensional measuring equipment to properly locate the wheelhouse.


    Object Number: 690557  Size: SH
  1. Remove all related panels and components.
  2. Visually inspect and restore as much of the damage as possible to factory specifications.
  3. Remove all sealers and anti-corrosion materials, as necessary.
  4. Place a piece of 25 mm (1 in) wide masking tape (1) on the forward contour of the wheelhouse at the flange, where it attaches to the cowl panel.

  5. Object Number: 690560  Size: SH
  6. Cut the wheelhouse along the forward edge of the masking tape to leave a 25 mm (1 in) tab extending forward from the cowl panel (1).
  7. Locate, mark and drill out factory welds, which attach the wheelhouse assembly to the following areas (2):
  8. • The upper rail inner panel
    • The cowl panel
    • The radiator support
    • The lower front rails
  9. Remove the damaged wheelhouse assembly.

Installation Procedure

  1. Clean and prepare surfaces to be welded.

  2. Object Number: 690560  Size: SH
  3. Cut the flange off the service part that is normally welded to the cowl panel (1).
  4. Drill 8 mm (5/16 in) holes for plug welding in the locations noted from the original assembly.
  5. Drill holes for plug welding every 40 mm (1½ in) along the cut edge to be attached to the tab remaining from the original assembly (2).
  6. Inspect the position of the wheelhouse assembly, use 3-dimensional measuring equipment.
  7. Plug weld accordingly.
  8. Clean and prepare all welded surfaces.
  9. Prime with 2-part catalyzed primer.
  10. Apply the following as necessary:
  11. • Sealers
    • Sound deadeners
    • Anti-corrosion materials
  12. Install all related panels and components.