Rear Lift Window Replacement

Rear Lift Window Replacement


Tools Required
* J 24402-A Glass Sealant Cold Knife Remover or Equivalent
* J 39032 Stationary Glass Removal Tool or Equivalent
* GM P/N 12346392 Urethane Adhesive Kit or Equivalent
* Isopropyl Alcohol or Equivalent
* Cartridge-type Caulking Gun
* Commercial-type Utility Knife
* Razor Blade Scraper
* Rubber Suction Cups



Removal Procedure

Caution: If a window is cracked but still intact, crisscross the window with masking tape in order to reduce the risk of damage or personal injury.


Notice: DO NOT close the lift window panel with the struts attached unless the window is installed and the window adhesive fully cured. The window adds strength and rigidity to the lift window panel. Attempting to close the lift window panel, with the struts installed, without a window or with the window adhesive not fully cured, could cause the panel to crack.



Important: Before cutting out a stationary window, apply a double layer of masking tape around the perimeter of the painted surfaces and inner trim.


1. Remove the rear lift window struts. Refer to Rear Compartment Lift Window Strut Replacement (Service and Repair) .
Caution: Refer to Defroster Outlet Caution .
2. Cover to protect the following parts from broken glass:

1. Upper dash pad
2. Defroster outlets and A/C outlets
3. Seats and carpeting

3. Disconnect the rear defogger electrical connections.
4. Disconnect the OnStar(R), if equipped.




5. Disconnect the antenna connector from the window.




6. Remove the window outer auxiliary seal.




7. Remove the rear lift window panel. Refer to Rear Lift Window Panel Weatherstrip Replacement (Rear Lift Window Panel Weatherstrip Replacement) .
8. Place the panel face down on a clean protective surface.




9. Remove the front weatherstrip.




Caution: Refer to Glass and Sheet Metal Handling Caution .

Important: The rear lift window reveal molding fills the cavities between the body and window.


If the reveal molding is stretched or damaged, it cannot be reused. It must be replaced.


10. Remove the rear lift window reveal molding.
If the rear lift window reveal molding will not release, use a utility knife in order to cut around the window in order to remove the rear window reveal molding.





Important: Keep the cutting edge of the tool against the window.


11. This will allow the urethane adhesive to be separated from the window.

* Leave a base of urethane on the pinchweld flange.
* The only suitable lubrication is clear water.
* Use J 24402-A , J 39032 or equivalent in order to remove the window.





12. With the aid of an assistant, use the suction cups in order to lift the rear lift window from the opening.



Installation Procedure

1. Install a stationary window into the opening. Refer to Adhesive Installation of Stationary Windows (Adhesive Installation of Stationary Windows) .
2. Remove the rear lift window struts. Refer to Rear Compartment Lift Window Strut Replacement (Service and Repair) .
3. Connect the rear defogger electrical connections.
4. Connect the OnStar(R), if equipped.




5. Connect the antenna connector to the window.
6. Remove the protective coverings and tape from the vehicle and the headliner