Rear Window Replacement
REMOVAL PROCEDURETools Required
^ Adhesive Kit GM P/N 12346284 or equivalent
^ J 24402-A J 24402-A Glass Sealant Remover (Cold Knife), or equivalent
CAUTION:
^ When replacing stationary windows, Urethane Adhesive Kit GM P/N 12346284, or a urethane adhesive system meeting GM Specification GM3651M, must be used to maintain original installation integrity. Failure to use the urethane adhesive kit will result in poor retention of the window which may allow unrestrained occupants to be ejected from the vehicle resulting in personal injury.
^ When working with any type of glass, use approved safety glasses and gloves to reduce the chance of personal injury.
^ At least 24 hours are required for complete curing of repair material The repair area should not be physically disturbed until after that time. Insufficient curing of urethane adhesive may allow unrestrained occupants to be ejected from the vehicle resulting in personal injury.
IMPORTANT: When damaged sheet metal has been repaired and the window opening needs to be repainted, the bonding area should be a primer surface only, and not an aftermarket top coated (paint, or color coated) surface. Materials such as (BASF DE17), (DUPONT 2610) or (PPG DP40) or equivalent are appropriate for this application.
Window Prep Primer (Clear Number 1) etches the window. Care should be taken when applying to prevent the Window Prep Primer from running into the vision area.
Partially lower a window to prevent pressure build ups when closing doors prior to urethane adhesive cure.
Rear Window Replacement: Removal Procedure:
1. Mask off the area around the rear window to: protect painted surfaces, the headliner, and as an aid in cleanup after installation.
2. Remove the rear window reveal molding.
3. Remove the rear window defogger left electrical connector, if equipped.
Rear Window Replacement: Removal Procedure:
4. Remove the rear window defogger right electrical connector and the antenna connector, if equipped.
Rear Window Replacement: Removal Procedure:
5. Remove the rear window radio antenna center connector, if equipped.
6. Using a razor or utility knife, make a preliminary cut around perimeter of the rear window, cut as close to edge of the rear window as possible.
Rear Window Replacement: Removal Procedure:
7. Cut out rear the window keeping the blade as close to edge of the rear window as possible using J 24402-A Glass Sealant Remove Knife.
8. With the aid of a helper use suction cups to lift the rear window from the opening.
9. Remove the rear window from the vehicle.
10. Clean the rear window opening of any loose material.
If the rear window is to be reinstalled, all urethane adhesive must be removed from rear window.
INSTALLATION PROCEDURE
Rear Window Replacement: Installation Procedure:
1. Clean the surface of the rear window by wiping with a clean, dampened cloth using GM Window Cleaner GM P/N 1050427 or isopropyl alcohol, then allowing to air dry.
2. Install the rear window reveal molding. Start from the center and hand press the molding onto the window.
3. Position (dry fit) the rear window to the opening.
Rear Window Replacement: Installation Procedure:
4. Apply masking tape strips across the edge of the rear window and adjacent body panels. During installation the tape on the windshield can be aligned with the tape on the body to guide the windshield into the desired position.
5. Slit the tape at the edge of the rear window.
6. Remove the rear window.
7. Shake the primers vigorously that are provided in urethane adhesive kit GM P/N 12346284 or equivalent.
Rear Window Replacement: Installation Procedure:
8. Apply Glass Prep Primer (Clear Number 1) to the inner surface on the window that will contact the urethane on the window opening.
Rear Window Replacement: Installation Procedure:
9. Apply Glass Prep Primer (Black Number 2) to the inner surface on the window that will contact the urethane on the window opening. Allow Glass Prep Primer (Black Number 2) to dry 6 to 10 minutes.
IMPORTANT:
^ Urethane will not adhere to a urethane free pinchweld unless Black Primer #3 has been applied.
^ The pinchweld to be primed with Black Primer #3 must be an original paint or primed surface not an aftermarket finished painted surface.
^ Do Not apply Black Primer #3 to existing urethane on the pinchweld.
10. Apply Pinch-Weld Primer (Black #3) to any repaired primed area of the pinchweld.
11. Allow the #3 primer to dry 10 minutes.
Rear Window Replacement: Installation Procedure:
12. Apply a smooth continuous bead of urethane adhesive around the rear window opening pinchweld or around the edge of the rear window where primed in step 9.
Rear Window Replacement: Installation Procedure:
13. With aid of a helper use suction cups to lift the rear window into the opening.
14. With the rear window centered in the opening, use the tape applied in step 1 to properly position the rear window.
15. Press the rear window firmly to wet-out and seat the urethane adhesive.
^ Using a small disposable brush or a flat-bladed tool, paddle the urethane material around the edge of the rear window to ensure a watertight seal.
^ If necessary, add additional urethane to fill voids in the seal.
^ Use care to avoid excessive squeeze out which could cause an appearance problem.
16. Tape the rear window to the roof until the urethane adhesive cures.
Rear Window Replacement: Installation Procedure:
17. Watertest the vehicle at once using soft spray.
^ Use warm or hot water if available.
^ Do not direct a hard stream of water at fresh urethane adhesive material.
^ If any leaks are found, paddle in extra urethane adhesive at the leak point using a small disposable brush or a flat-bladed tool.
^ Water applied on top of the urethane adhesive, either during watertest or as a separate operation, will speed up the cure of the urethane adhesive.
18. Install the rear window defogger right electrical connector and the antenna connector, if equipped.
Rear Window Replacement: Installation Procedure:
19. Install the rear window radio antenna center connector, it equipped.
Rear Window Replacement: Installation Procedure:
20. Install the rear window defogger left electrical connector, if equipped.
21. Remove the protective tape from around the rear window.
22. Clean the surface of the rear window by wiping with a clean, dampened cloth using GM Window Cleaner GM PIN 1050427 or isopropyl alcohol, then allow to air dry.
23. Allow the urethane to cure at a normal room temperature of 22°C (72°F) and 30 percent humidity for a minimum of 6 hours.