LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2018 >> Spark ACTIV, Automatic CVT Trans >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed And MOVEABLE Window System >> Repair Instructions >> Liftgate Window Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

  1. Remove all mounds or loose pieces of urethane adhesive from the pinch-weld area.
  2. Inspect for any of the following problems in order to help prevent future breakage of the window:
    • High weld
    • Solder spots
    • Hardened sealer
    • Any other obstruction or irregularity in the pinch-weld flange
  3. After repairing the opening as indicated, perform the following steps:

    Remove all traces of broken glass from the outer cowl panel, seats and floor.

  4. GM2027903
    NOTE:

    Install the liftgate window without the retainers on left and right side of the liftgate window.

    Apply adhesive bead (1).

    Cut into the tip of the cartridge in such a way that a bead of adhesive approximately. 13 mm (0.511 in) thick is produced.

  5. Insert liftgate window.
    • Place the liftgate window at the upper area and lower down.
    • NOTE:

      Second mechanic required.

    • Insert liftgate window with BO-641  holder.
  6. Secure liftgate window in position with fabric tape.
  7. Clean any excess urethane adhesive from the body.
  8. Use a soft spray of warm water in order to immediately water test the window.
  9. Inspect the window for leaks.
  10. If any leaks are found, use a plastic paddle in order to apply extra urethane adhesive at the leak point.
  11. Retest the window for leaks.
  12. Maintain the following conditions in order to properly cure the urethane adhesive:
    • Partially lower a door window in order to prevent pressure buildups when closing doors before the urethane adhesive cures.
    • Do not drive the vehicle until the urethane adhesive is cured. Refer to the above curing times.
    • Do not use compressed air in order to dry the urethane adhesive.
  13. Connect the electrical connectors from the liftgate window defogger bus bars.
  14. Remove rear end spoiler. Refer to Rear End Spoiler Replacement
  15. Remove liftgate window wiper motor. Refer to Rear Window Wiper Motor Replacement .
  16. Connect battery. Refer to Battery Negative Cable Disconnection and Connection