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 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 pinch-weld flange surface by using a clean utility knife or razor blade scraper.
  5. Inspect for any of the following problems in order to help prevent future breakage of the window:
  6. • High weld
    • Solder spots
    • Hardened sealer
    • Any other obstruction or irregularity in the pinchweld flange

    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.

  7. After repairing the opening as indicated, perform the following steps:
  8. 5.1. Remove all traces of broken glass from the outer cowl panel, seats, floor and defroster ducts.
    5.2. 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.
  9. Verify all primers and the urethane adhesive are within the expiration dates.

  10. Object Number: 245283  Size: SH

    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 (1) of the urethane adhesive on the pinchweld flange. Apply the primer only to nicks, scratches or the primed surfaces.

  11. Shake the pinchweld primer black #3 for at least 1 minute.
  12. Use a new dauber in order to apply the primer to the surface of the pinchweld flange (1).
  13. Allow the pinchweld primer to dry for approximately 10 minutes.

  14. Object Number: 379890  Size: SH

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

  15. Use a new dauber in order to apply glass prep clear #1 to the area approximately 10-16 mm (3/8-5/8 in) around the entire perimeter of the window inner surface.
  16. Immediately wipe the glass primed area using a clean, lint-free cloth.


    Object Number: 245290  Size: SH

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

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

  20. Object Number: 772047  Size: SH
  21. 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.

  22. Object Number: 784640  Size: SH
  23. The urethane adhesive bead must maintain a consistent height (A) and width (B) uniformity.

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

  26. Object Number: 245315  Size: SH
  27. 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).

  28. Object Number: 768359  Size: SH
  29. With the aid of an assistant, place the window into the opening while positioning the locator pins to the body.
  30. Center the front window between the six rubber bumpers located on the side reveal molding retainer clips.

  31. Object Number: 757629  Size: SH
  32. With the aid of an assistant, place the rear window into the opening while positioning the locator pins (1) to the body.
  33. Center the rear window (2) into the opening.

  34. Object Number: 706204  Size: SH
  35. Press firmly around the entire periphery of the window in order to wet-out the urethane adhesive bead.

  36. Object Number: 706194  Size: SH
  37. Clean any excess urethane adhesive from the body using VM&P Naptha.
  38. Clean any excess urethane adhesive from the interior trim using acrysol.

  39. Object Number: 95572  Size: SH

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

  40. Use a soft spray of warm water in order to immediately water test the window.
  41. Inspect the window for leaks.
  42. If any leaks are found, use a plastic paddle in order to apply extra urethane adhesive at the leak point.
  43. Retest the window for leaks.
  44. 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.

  45. Maintain the following conditions in order to properly cure the urethane adhesive:
  46. • 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.
  47. Complete the window installation.