Rear Bumper Bracket: Service and Repair

Impact Bar Anchor Plate Replacement - Rear Bumper

Removal Procedure

CAUTION: Refer to Approved Equipment for Collision Repair Caution in Service Precautions.

1. Disable the SIR system. Refer to SIR Disabling and Enabling Zones in SIR.




2. Disconnect the negative battery cable
3. Remove all related panels and components.
4. Repair as much of the damage as possible.




5. Remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.

IMPORTANT: Note the number and location of the factory welds for installation of the anchor plate.




6. Locate and drill out all the necessary factory welds.
7. Remove the anchor plate.

Installation Procedure

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.




1. Drill 8-mm (5/16-in) plug weld holes in the service part as necessary in the corresponding locations noted on 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. Position the anchor plate to the rear rail.
5. Plug weld accordingly.
6. Clean and prepare all of the welded surfaces.
7. Install all of the related panels and components.
8. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
9. Paint the repaired area.
10. Connect the negative battery cable
11. Enable the SIR system. Refer to SIR Disabling and Enabling Zones in SIR.