Liftgate Window Glass: Service and Repair

Window Replacement - Lift Gate


Tools Required
* J 24402-A Glass Sealant Cold Knife Remover
* J 39032 Stationary Glass Removal Tool
* 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

1. Remove the lift gate applique. Refer to Lift Gate Applique Replacement () in Body Rear End.
2. Remove the rear wiper arm. Refer to Wiper Arm Replacement - Rear in Wiper/Washer Systems.
3. Remove the lift gate trim panel. Refer to Trim Panel Replacement - Lift Gate (Service and Repair) in Body Rear End.
4. Remove the rear wiper module. Refer to Wiper Motor Replacement - Lift Gate in Wiper/Washer Systems.

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: Care must be taken to avoid damaging paint around glass during removal.





5. Remove the electrical connectors from the rear window defogger bus bars. Position the electrical connectors so not to damage the wiring/connectors when using the urethane power removal tool.

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


6. Apply two 15 cm (6 in) pieces of duct tape to the top and bottom of the glass to prevent it from falling out when the urethane adhesive is cut.





Caution: When using power tools that may create smoke when cutting urethane sealant, work should be done in a well ventilated area and/or with a NIOSH/MSHA Approved air supplied respirator to prevent possible harmful exposure.

When the urethane adhesive is heated enough to give off smoke, high levels of methylene diisocyanate (MDI) may be present.

Unprotected exposure to methylene diisocyanate (MDI) may result in severe, chronic, debilitating respiratory problems.

7. From the inside of the lift gate, cut the urethane around the glass using aJ 39032 .
8. With the aid of an assistant, remove the lift gate window from the opening.



Installation Procedure

1. Install the rear window into the opening. Refer to Urethane Adhesive Installation of Stationary Windows (Urethane Adhesive Installation of Stationary Windows) .




2. Connect the rear window defogger electrical connectors to the bus bars.
3. Install the rear wiper module. Refer to Wiper Motor Replacement - Lift Gate in Wiper/Washer Systems.
4. Install the lift gate trim panel. Refer to Trim Panel Replacement - Lift Gate (Service and Repair) in Body Rear End.
5. Install the rear wiper arm. Refer to Wiper Arm Replacement - Rear in Wiper/Washer Systems.
6. Install the lift gate applique. Refer to Lift Gate Applique Replacement () in Body Rear End.