GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

    Caution: Refer to Safety Glasses Caution in the Preface section.

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

  1. Disable the SIR system. Refer to SIR Disabling and Enabling .
  2. Caution: Refer to Battery Disconnect Caution in the Preface section.

  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  4. Remove the cargo liner. Refer to Cargo Box Liner Replacement .
  5. Remove the tail lamp assemblies. Refer to Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement .
  6. Remove the rear bumper fascia. Refer to Rear Bumper Fascia Replacement .
  7. Remove the endgate. Refer to Endgate Replacement .
  8. Remove the rear bumper centre support. Refer to Rear Bumper Fascia Center Support Replacement .
  9. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  10. Important: Note the number and location of the factory welds for installation of the rear end panel.


    Object Number: 2017368  Size: SH
  11. Locate, mark and drill out the spot welds in the rear end panel assembly to the rear floor and rear crossmember assemblies (1).

Installation Procedure

    Important: Spot welding is the preferred method for attaching panels and should be used whenever possible. A plug weld should only be performed where spot welding is not possible.

    Important: If the location of the original spot weld holes cannot be determined, or if structural weld-thru adhesive is present, space the puddle weld holes every 32 mm (1¼ in).

  1. Clean and prepare the mating surfaces of both parts of the panel.
  2. Important: Secondary sealer must applied be to the perimeter of all flanges. Secondary sealer must be applied to all welds/joints that were originally covered by secondary sealer.


    Object Number: 2021907  Size: SH
  3. Align the rear end panel assembly using the datum points and weld (1) rear end panel to the vehicle.
  4. Install the rear bumper centre support. Refer to Rear Bumper Fascia Center Support Replacement .
  5. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  6. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems .
  7. Install the rear bumper centre support. Refer to Rear Bumper Fascia Center Support Replacement .
  8. Install the rear bumper fascia. Refer to Rear Bumper Fascia Replacement .
  9. Install the tail lamp assemblies. Refer to Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement .
  10. Install the endgate. Refer to Endgate Replacement .
  11. Install the cargo liner. Refer to Cargo Box Liner Replacement .
  12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  13. Enable the SIR system. Refer to SIR Disabling and Enabling .