Liftgate Window Replacement (Coupe)

Liftgate Window Replacement (Coupe)


Special Tools
* Urethane Adhesive Kit GM P/N 12346392 or Equivalent
* Isopropyl Alcohol or equivalent
* Cartridge-Type Caulking Gun
* Commercial-Type Utility Knife
* Razor Blade Scraper
* Suction Cups
* Plastic Paddle



Removal Procedure

Caution: Refer to Cracked Window Caution (Cracked Window Caution) .

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


1. Open the liftgate.
2. Remove the liftgate trim. Refer to Liftgate Trim Panel Replacement (Sedan) (Service and Repair)Liftgate Trim Panel Replacement (Coupe) (Service and Repair) .
3. Disconnect the electrical connectors from the liftgate window defogger bus bar.
4. Remove the rear window wiper arm. Refer to Rear Window Wiper Arm Replacement (Rear Window Wiper Arm Replacement) .
5. Remove the wiper motor assembly from the liftgate glass.
Caution: Refer to Glass and Sheet Metal Handling Caution (Glass and Sheet Metal Handling Caution) .
Caution: Refer to Defroster Outlet Caution (Defroster Outlet Caution) .
6. Cover the following parts to protect from broken glass:

* Upper dash pad
* Defroster outlets and A/C outlets
* Seats and carpeting


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


7. Remove the window from the urethane adhesive.

* Leave a base of urethane approximately 2 mm (0.078 in) on the pinch-weld flange.
* The only suitable lubrication is clear water.
* Use a cutting tool from inside of liftgate to remove the glass.

8. If necessary, use a long utility knife or similar tool to remove the bottom corners of the window from the urethane adhesive.




9. With the aid of an assistant, remove the window (1) from the vehicle.



Installation Procedure

1. Install the liftgate window into the opening. Refer to Adhesive Installation of Liftgate Windows (Adhesive Installation of Liftgate Windows) .
2. Install the wiper motor assembly.
3. Install the rear window wiper arm. Refer to Rear Window Wiper Arm Replacement (Rear Window Wiper Arm Replacement) .
4. Connect the liftgate window defogger electrical connectors to the bus bar.
5. Install the liftgate trim. Refer to Liftgate Trim Panel Replacement (Sedan) (Service and Repair)Liftgate Trim Panel Replacement (Coupe) (Service and Repair) .
6. Remove the double layer of masking tape around the perimeter of the painted surfaces and the interior trim.
7. Close the liftgate.