Cowl: Service and Repair
Windshield Lower Panel ReplacementRemoval procedure
CAUTION: Refer to Approved Equipment for Collision Repair Caution in Service Precautions.
IMPORTANT: When replacing panels that involve servicing of stationary glass, refer to Urethane Adhesive Installation of Stationary Windows before performing any priming or refinishing.
1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
2. Disconnect the negative battery cable.
3. Remove all related panels and components.
4. Repair as much of the damage as possible to factory specifications.
CAUTION: Refer to Foam Sound Deadeners Caution in Service Precautions.
5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
6. Remove the windshield. Refer to Windshield Replacement.
IMPORTANT: Do not damage any inner panels or reinforcements.
7. Locate and drill out all factory welds. Note the number and location of welds for installation of the new panel.
8. Remove the damaged panel.
Installation Procedure
IMPORTANT: If the location of the original plug weld holes can not be determined, or if structural weld-thru adhesive is present, space the plug weld holes every 40 mm (1 1/2 in) apart.
1. Drill 8 mm (5/16 in) plug weld holes as necessary in locations noted from the original front 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 upper rail.
5. Plug weld accordingly.
6. Install the windshield. Refer to Windshield Replacement in Stationary Windows.
7. Clean and prepare all welded surfaces.
8. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
9. Paint the repair area.
10. Install all related panels and components.
11. Connect the negative battery cable.
12. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.