GM Service Manual Online
For 1990-2009 cars only

Tools Required

Reciprocating Saw

Removal Procedure


    Object Number: 1297028  Size: SH

    Important: The replacement front end kit is serviced as a complete assembly. Parts with the front end kit include the front tie bar assembly, the left and the right front wheelhouse assemblies, and an instruction sheet.

    You must remove and replace the upper fender rails in order to replace the front end kit. The upper fender rails are not included in the front end kit and must be ordered separately.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

  3. Object Number: 1236543  Size: SH
  4. Remove all related components, including the upper fender rails and the vacuum brake booster. Refer to Front Fender Upper Rail Replacement and Power Vacuum Brake Booster Replacement in Hydraulic Brakes.
  5. Repair as much of the damage as possible to factory specifications.
  6. Caution: Refer to Approved Equipment for Collision Repair Caution in the Preface section.

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

  7. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.

  8. Object Number: 1298663  Size: SH
  9. With a reciprocating saw or equivalent, cut both the right and the left wheelhouse panel assemblies approximately 26 mm (1 in) in front of the body side panel (1) as shown.
  10. Remove the 2  body mount bolts from the front tie bar.

  11. Object Number: 1298664  Size: SH
  12. With the aid of an assistant, remove the damaged front end assembly.

  13. Object Number: 1298666  Size: SH
  14. Locate and drill completely through all factory welds on both the right and the left inboard apron extensions as shown.

  15. Object Number: 1298704  Size: SH

    Important: Do NOT drill into the wheelhouse panel.

  16. Locate and drill out all factory welds on both the right and the left lower wheelhouse outboard extension (1).

  17. Object Number: 1298712  Size: SH
  18. With a reciprocating saw or equivalent, and using the outboard wheelhouse extension (1) as a guide, cut along the side of the extension down to the floor crossmember (2) as shown.

  19. Object Number: 1298717  Size: SH
  20. Locate and drill completely through all factory welds which attach the right and the left outboard wheelhouse extensions (1) to the body side panel (2) and to the front floor crossmember (3).
  21. Remove and discard the outboard wheelhouse extensions.

  22. Object Number: 1298718  Size: SH
  23. Cut a slot into the wheelhouse panel (1) approximately 152 mm (6 in) above the front floor crossmember (2).

  24. Object Number: 1298720  Size: SH
  25. Apply ¾ in masking tape from the slot (1) up and around the plenum (2) as shown. Line up the front edge of the tape with the back edge of the remaining holes in the wheelhouse panel.

  26. Object Number: 1298724  Size: SH

    Important: The tape edge facing the front of the vehicle is the proper cut location to create a weld flange for the service front end assembly.

  27. With a cut-off wheel or equivalent, cut the remaining portions of the wheelhouse panels along the front edge of the masking tape as shown.

  28. Object Number: 1298727  Size: SH
  29. Remove and discard the wheelhouse panels.

  30. Object Number: 1298729  Size: SH
  31. Drill 8 mm (5/16 in) plug weld holes approximately 26 mm (1 in) apart in both the right and the left weld flanges as shown.
  32. Prepare all mating surfaces as necessary.
  33. Apply 3M® Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.

Service Part Preparations


Object Number: 1298737  Size: SH

Important: Trim the backs of both wheelhouse panels (1) to create the proper size weld flange for installation of the service front end kit.


    Object Number: 1298738  Size: SH
  1. Using a reciprocating saw or equivalent, remove approximately 38 mm (1.5 in) of the back of each wheelhouse panel as shown.

  2. Object Number: 1298739  Size: SH
  3. Remove and discard the trimmed wheelhouse flanges (1).

  4. Object Number: 1298740  Size: SH
  5. Locate and drill completely through all factory welds on both of the wheelhouse panel extensions (1). The left panel is shown, the right panel is similar.
  6. Prepare all mating surfaces as necessary.
  7. Apply 3M® Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.

Installation Procedure


    Object Number: 1298741  Size: SH
  1. With the aid of an assistant, position the service front end assembly and clamp the assembly in place. Inspect for proper positioning. Refer to Motor Compartment in Dimensions - Body .
  2. Reinstall the 2 body mount bolts from the front tie bar.
  3. Tighten
    Tighten the bolts to 140 N·m (103 lb ft).


    Object Number: 1298742  Size: SH
  4. Plug weld accordingly.

  5. Object Number: 1236549  Size: SH
  6. Install the upper fender rails. Refer to Front Fender Upper Rail Replacement .
  7. Clean and prepare all welded surfaces.
  8. Apply the sealers and the anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.
  9. Paint the repair area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.

  10. Object Number: 748032  Size: SH
  11. Install all related components, including the vacuum booster. Refer to Power Vacuum Brake Booster Replacement in Hydraulic Brakes.
  12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  13. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.