Rear Window Replacement

Rear Window Replacement

Tools Required

- J 24402-A Cold Knife Glass Sealant Remover
- J 39040 Quarter Window Remover
- 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: 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.

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

1. Remove the window lower garnish molding. Refer to Rear Window Lower Garnish Molding Replacement Service and Repair.
2. Remove both rear seat headrests (extended cab). Refer to Head Restraint Replacement [1][2]Head Restraint Replacement.
3. Remove the rear seat (extended cab) only. Refer to Rear Seat Replacement [1][2]Head Restraint Replacement.
4. Remove the rear sliding window regulator motor bolt , if equipped. Refer to Rear Sliding Window Regulator Replacement Service and Repair.

Caution: If broken glass falls into the defroster outlets, it can be blown into the passenger compartment and cause personal injury.

5. Cover to protect the following parts from broken glass:
5.1. Upper dash pad
5.2. Defroster outlets and A/C outlets
5.3. Seats and carpeting

Caution: When working with any type of glass or sheet metal with exposed or rough edges, wear approved safety glasses and gloves in order to reduce the chance of personal injury.






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

6. 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 39040 or equivalent in order to remove the window.
7. Open the window, if equipped.






8. With the aid of an assistant, remove the window from the opening.

Installation Procedure

1. Install a stationary window into the opening.
2. Install the rear sliding window regulator, if equipped. Refer to Rear Sliding Window Regulator Replacement Service and Repair.
3. Install the window lower garnish molding. Refer to Rear Window Lower Garnish Molding Replacement Service and Repair.
4. Install both rear seat headrests (extended cab). Refer to Head Restraint Replacement [1][2]Head Restraint Replacement.
5. Remove the rear seat (extended cab) only. Refer to Rear Seat Replacement [1][2]Head Restraint Replacement.
6. Remove the rear sliding window regulator motor bolt , if equipped. Refer to Rear Sliding Window Regulator Replacement Service and Repair.
7. Remove the double layer of masking tape around the perimeter of the painted surfaces and interior trim.