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Home >> Chevrolet >> 2020 >> Impala Premier >> Repair and Diagnosis >> Body & Frame >> Fixed And MOVEABLE Windows >> Repair Instructions >> Windshield Replacement >> Removal Procedure
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Removal Procedure

WARNING:

Refer to Glass and Sheet Metal Handling Warning .

WARNING:

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

WARNING:

Failure to prep the area prior to the application of primer may cause insufficient bonding of urethane adhesive. Insufficient bonding of urethane adhesive may allow unrestrained occupants to be ejected from the vehicle resulting in personal injury.

WARNING:

Insufficient curing of urethane adhesive may allow unrestrained occupants to be ejected from the vehicle resulting in personal injury.

  • For the moisture-curing type of urethane adhesive, allow a minimum of 6 hours at 21°C (70°F) or greater and with at least 30 percent relative humidity. Allow at least 24 hours for the complete curing of the urethane adhesive.
  • For the chemical-curing type of urethane adhesive, allow a minimum of 1 hour.

Do NOT physically disturb the repair area until after these minimum times have elapsed.

WARNING:

While operating, electrical control modules can produce heat and become hotter than their surroundings. To prevent burns allow sufficient time for the module to cool before removal.

  1. Open the hood.
  2. Remove the windshield wiper arms. Refer to Windshield Wiper Arm Replacement .
  3. Remove the air inlet grille. Refer to Air Inlet Grille Panel Replacement .
  4. Remove the sunshade. Refer to Sunshade Replacement .
  5. Lower the front section of the headliner only to access the urethane adhesive bead. Refer to Headlining Trim Panel Replacement (With Sunroof)Headlining Trim Panel Replacement (Without Sunroof) .
  6. Remove the remote control door lock receiver. Refer to Remote Function Actuator Module Replacement , if equipped.
    7. NOTE:

    If the windshield is equipped with a blackout area around the mirror base bracket Care Must be used not to cut or scrape the blackout. If the mount bracket come off the windshield it can Not be reinstalled and the windshield must be replaced. If the bracket is bonded to the windshield it is Not reusable. Remove all sensor, cover, electrical devices, and bracket. from the pins. If the bracket is bonded to the windshield it is Not reusable.

  7. Remove the inside rearview mirror. Refer to Inside Rearview Mirror Replacement .
  8. Remove the windshield garnish moldings left and right side. Refer to Windshield Garnish Molding Replacement .
  9. Cover to protect the following parts from broken glass:
    • Upper dash pad
    • Defroster outlets and A/C outlets
    • Seats and carpeting
  10. Using the appropriate tool, carefully cut the lace from around the window in order to access the urethane adhesive bead.
    11. NOTE:

    If reusing the window use care not to cut off the locator pins located in the upper corners. If the locating pins are cut off in the removal it will be necessary to use masking tape to tape the window in place until the urethane adhesive cures.

  11. Do the following steps when separated the window from the urethane adhesive:
    • Leave a base of urethane adhesive on the pinchweld flange.
    • The only suitable lubrication is clean water, no oils, lubricants or soaps.
    • BO-39032  Stationary Glass Removal Tool, or equivalent in order to remove the window.
  12. GM379883

    Using the appropriate tool, cut along the bottom of the window separating the window from urethane adhesive. Keep the cutting edge of the tool against the window. Do this from inside the vehicle. While cutting from inside the vehicle, reposition the tool to cut the urethane adhesive along the top and both sides to release the window completely.

  13. GM2732758

    Remove the window (1) from the vehicle with an assistant and Do the following:

    1. After removing the window spacers and mark the location of each one. If equipped.
    2. Check that the locator pins are still attached to each upper corner of the window for installing, if reusing.
    3. Remove all mounds or loose pieces of urethane adhesive from the pinchweld area.
    4. If the original window is being reused, remove all but approximately 2 mm (0.078 in) of the existing bead of urethane adhesive from the pinchweld flange surface, using a clean utility knife or razor blade scraper.
  14. Inspect for any of the following conditions in order to help prevent future breakage of the window:
    • High weld
    • Solder spots
    • Hardened sealer
    • Any other obstruction or irregularity in the pinchweld flange
    15. NOTE:

    If corrosion of the pinchweld flange is present or if sheet metal repairs or replacements are required, the pinchweld flange must be refinished in order to restore the bonding area strength. If paint repairs are required, mask the flange bonding area prior to applying the color coat in order to provide a clean primer only surface. Materials such as BASF DE15®, DuPont 2610®, Sherwin-Williams PSE 4600 and NP70® and Martin-Semour 5120 and 5130® PPG DP90LF SPIES/HECKER 3688/8590 - 3688/5150 - 4070/5090 STANDOX 11158/13320 - 14653/14980 products are approved for this application.

  15. After repairing the opening as indicated, perform the following steps:
    1. Remove all traces of broken glass from the outer cowl panel, seats, floor and defroster ducts.
    2. Clean around the edge of the inside surface of the window with a 50/50 mixture of isopropyl alcohol and water by volume on a dampened lint free cloth.
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