GM Service Manual Online
For 1990-2009 cars only
  1. Use a urethane adhesive systems which meet GM Specification GM 3651G.
  2. Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.

  3. Remove all mounds or loose pieces of urethane adhesive from the pinch-weld 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 pinch-weld flange surface by using a clean utility knife or razor blade scraper.
  5. Inspect the pinch-weld flange area for the cause of a broken window.
  6. Inspect for any of the following problems in order to help prevent future breakage of the window:
  7. • High weld
    • Solder spots
    • Hardened sealer
    • Any other obstruction or irregularity in the pinch-weld flange

    Note: If corrosion of the pinch-weld flange is present or if sheet metal repairs or replacements are required, the pinch-weld 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 DE17®, 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.

  8. After repairing the opening as indicated, perform the following steps:
  9. 6.1. Remove all traces of broken glass from the seats, floor and/or defroster ducts, if applicable.
    6.2. 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.
    6.3. Allow the isopropyl alcohol to dry completely before applying the primers.
  10. Verify all primers and urethane adhesive are within expiration dates.
  11. 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.

    Note: Do not apply the black #3 primer to the existing bead of the urethane adhesive on the pinch-weld flange. Apply the primer only to nicks, scratches or the primed surfaces.

  12. Shake the pinch-weld black #3 primer for at least 1 minute.
  13. Use a new dauber in order to apply the primer to the surface of the pinch-weld flange.
  14. Allow the pinch-weld primer to dry for approximately 10 minutes.

  15. Object Number: 161424  Size: SH

    Note: Use care when applying clear #1 glass prep on the window. This primer dries almost instantly, and may stain the viewing area of the window if not applied evenly.

  16. Use a new dauber in order to apply clear #1 glass prep to the area approximately 18 mm (0.71 in) around the entire perimeter of the window inner surface.
  17. Immediately wipe the glass primed area using a clean, lint-free cloth.


    Object Number: 245290  Size: SH

    Note: The black #2 glass primer is effective up to 8 hours after applying it to the glass. The primed surface of the glass must be kept clean.

  18. Shake the black #2 glass primer for at least 1 minute.
  19. Use a new dauber in order to apply the black #2 glass primer to the same areas (2) that the clear #1 glass prep was applied.
  20. Allow the glass primer to dry for approximately 10 minutes.

  21. Object Number: 1277168  Size: SH

    Note: Measure a distance of 14-17 mm (0.551-0.669 in) inward, from the top, bottom and side edges of the window in order to apply the urethane bead onto the window.

  22. When applying around the radius edges of the window, measure a distance of 17-22 mm (0.669-0.866 in) inward, for the radius edges only.
  23. Use the measurements as a guide in order to apply the urethane adhesive bead to the blackout area of the window.


    Object Number: 772047  Size: SH

    Note: The urethane adhesive bead must maintain a consistent height and width uniformity.

  24. Cut the applicator nozzle as indicated in order to provide a minimum bead size of 8 mm (3/8 in) wide and 14 mm (5/8 in) high.
  25. Use a cartridge-type caulking gun in order to apply a smooth, continuous bead of urethane adhesive.
  26. Use the specifications as listed above to guide for the nozzle in order to apply the urethane adhesive to the inner surface of the window.

  27. Object Number: 772050  Size: SH
  28. Use a cartridge-type caulking gun in order to apply a smooth, continuous bead of urethane adhesive.

  29. Object Number: 245315  Size: SH
  30. Use the edge of the window as a guide for the nozzle in order to apply the urethane adhesive (1) to the inner surface of the window (3).

  31. Object Number: 1277167  Size: SH

    Note: Install the glass to the opening within 5 minutes after the urethane adhesive is applied.

  32. Position the window into the opening using the alignment pins.
  33. Press around the entire perimeter of the glass edge in order to wet-out the urethane adhesive bead.
  34. Tape the window to the body side in order to minimize movement until the urethane adhesive cures.

  35. Object Number: 706194  Size: SH
  36. Clean any excess urethane adhesive from the body by using VMP Naptha.
  37. Clean any excess urethane adhesive from the interior trim by using Acrysol.

  38. Object Number: 95572  Size: SH

    Note: Do not direct a hard stream of high pressure water to the freshly applied urethane adhesive.

  39. Use a soft spray of warm water in order to immediately water test the window.
  40. Inspect the window for leaks.
  41. If any leaks are found, use a plastic paddle in order to apply extra urethane adhesive at the leak point.
  42. Retest the window for leaks.
  43. 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.

  44. Maintain the following conditions in order to properly cure the urethane adhesive:
  45. • 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.