GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

  1. Disable the 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. Visually inspect the damage. 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.
  6. Locate and mark all factory welds.

  7. Object Number: 2027090  Size: SH
  8. Drill all factory welds. Note the number and location of welds for installation of the service assembly.
  9. Cut the adhesive with an appropriate tool.

  10. Object Number: 2027091  Size: SH
  11. Remove the damaged roof panel (1).

Installation Procedure


    Object Number: 2027092  Size: SH
  1. Drill 8 mm (5/16 in) for plug welding along the edges of the service panel as noted from the original panel.
  2. Clean and prepare the attaching surfaces for welding.

  3. Object Number: 2027093  Size: SH
  4. Apply one-part windshield urethane adhesive as noted from the original panel.
  5. Position the roof panel on the vehicle.
  6. Verify the fit of the panel.
  7. Clamp the panel into position.

  8. Object Number: 2027094  Size: SH
  9. Plug weld accordingly.
  10. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
  11. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems.
  12. Install all related panels and components.
  13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  14. Enable the SIR system. Refer to SIR Disabling and Enabling.