Back Window Glass

1. Use a urethane adhesive systems which meet GM Specification GM 3651G
Warning: Refer to Glass and Sheet Metal Handling Warning.

2. Remove all mounds or loose pieces of urethane adhesive from the pinch-weld area.
3. If the original window is being reused, remove all but approximately 2 mm (3/64 in) of the existing bead of urethane adhesive from the pinch-weld flange by using a clean utility knife or razor blade scraper.
4. Inspect for any of the following problems in order to help prevent future breakage of the window:
• High weld
• Solder spots on the pinchweld
• 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 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.

5. 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.
Warning: Refer to Window Retention Warning.

6. Verify all primers and urethane adhesive are within expiration dates.
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.

7. Shake the pinch-weld primer black #3 for at least 1 minute.
8. Use a new dauber in order to apply the primer to the surface of the pinch-weld flange.
9. Allow the pinch-weld primer to dry for approximately 10 minutes.
10. With the aid of an assistant, dry fit the window to the opening in order to determine the correct position.
11. Use masking tape in order to mark the locations (1) of the window (2) in the opening.
    
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12. Cut the masking tape in the center and remove the window from the opening.
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.

13. 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.
    Immediately wipe the glass primed area using a clean, lint-free cloth.
    
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14. Apply a second coat of the glass prep clear #1 to the same area of the glass.
    
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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.

15. Shake the glass primer black #2 for at least 1 minute.
    
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16. 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.
17. Allow the glass primer to dry for approximately 10 minutes.
18. Cut the applicator nozzle in order to provide a bead of 8 mm (0.316 in) wide and 12.7 mm (1/2 in) high.
    
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19. Use a cartridge-type caulking gun in order to apply a smooth, continuous bead of urethane adhesive.
    
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20. 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).
    
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21. With an assistant, align the window (1) and locator pins (2) to the locator slots in each corner of the upper pinch-weld flange, set the window (1) in place.
    
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22. Align the masking tape (1) lines on the window (2) and the body.
    
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23. Press the window firmly into place, 1 mm (0.039 in) below surface.
    
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24. Tape the window to the body in order to minimize movement until the urethane adhesive cures.
25. Clean any excess urethane adhesive from the body.
    
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Note: Do not direct a hard stream of high pressure water to the freshly applied urethane adhesive.

26. Use a soft spray of warm water in order to immediately water test the window.
    
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27. Inspect the window for leaks.
28. If any leaks are found, use a plastic paddle in order to apply extra urethane adhesive at the leak point.
29. Retest the window for leaks.
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.

30. 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.
31. Complete the window installation.

Special Tools

• BO-24402-A - Glass Sealant Remover (Cold Knife) .
• BO-39032 - Stationary Glass Removal Tool , or equivalent in order to remove the window.
• Use a urethane adhesive systems which meet GM Specification GM 3651G

For equivalent regional tools, refer to Special Tools.

Removal Procedure

Warning: 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.

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

1. Open the rear compartment lid.
2. Remove the rear window lower seal.
3. Disconnect the rear window defogger electrical connectors.
Warning: If broken glass falls into the defroster outlets, it can be blown into the passenger compartment and cause personal injury.

4. Cover to protect the following parts from broken glass:
• Upper dash pad
• Defroster outlets and A/C outlets
• Seats and carpeting
Warning: Refer to Glass and Sheet Metal Handling Warning.

5. Using the appropriate tool, carefully cut around the lace, start in the center working from side to side of the window to access the urethane adhesive bead, if equipped.
Note: Keep the cutting edge of the tool against the window.

6. This will allow the urethane adhesive to be separated from the window.
   
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• Leave a base of urethane on the pinchweld flange.
• The only suitable lubrication is clear water.
• BO-24402-A - Glass Sealant Remover (Cold Knife) .
• BO-39032 - Stationary Glass Removal Tool , or equivalent in order to remove the window.
7. With the aid of an assistant lift the rear window (1) from the opening.
   
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Installation Procedure

1. Install the rear window into the opening. Refer to Adhesive Installation of Rear Windows.
2. Install the rear window lower seal.
3. Connect the rear window defogger electrical connectors.
4. Close the rear compartment lid.
5. Remove the double layer of masking tape around the perimeter of the painted surfaces and the interior trim.

Special Tools

• S-0201964 - Bonded, Glass Removing Device
• Glass Handling Suction Cups
• Use an adhesive that is approved by GM

For equivalent regional tools, refer to Special Tools.

Removal Procedure

Warning: Refer to Cracked Window Warning.

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

1. Open the rear compartment lid.
2. Remove the sealing strip from the lower edge of the rear window.
Note: Use care around the high mount stop lamp when removing the rear window.

3. Disconnect the electrical connectors from the rear window defogger bus bar.
4. Disconnect the connector from the radio antenna module.
5. Lower the rear edge of the headliner this will allow the special tool S-0201964 - Bonded, Glass Removing Device to cut across the top of the window and not damage the headliner edge.
6. Protect the following parts from broken glass, seats and carpeting.
Warning: Refer to Glass and Sheet Metal Handling Warning.

7. Remove the rear window from the auto-adhesive as follows:
• Leave a base of urethane approximately 2 mm (0.078 in) on the pinch-weld flange.
• The only suitable lubrication is clear water.
• Use S-0201964 - Bonded, Glass Removing Device .
Warning: Refer to Glass and Sheet Metal Handling Warning.

Note: If the original window is being reused the window lace is not serviceable.

8. Using the appropriate tool, carefully cut around the lace (1), start in the center working from side to side of the window to access the urethane adhesive bead, if equipped.
   
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9. Start the cut between the center of the rear window and the roof.
1. Do this from inside the vehicle, insert the tool S-0201964 - Bonded, Glass Removing Device (1) between the center of the rear window and the roof, thus perforating the adhesive.
2. Move the cutting wire along the outside edge of the window.
3. Remove the tool S-0201964 - Bonded, Glass Removing Device .
4. Do this from inside the vehicle, install the cutting wire special tool S-0201964 - Bonded, Glass Removing Device (1).
5. Do this from outside the vehicle, install the cutting wire special tool S-0201964 - Bonded, Glass Removing Device .
6. With an assistant, use the special tool S-0201964 - Bonded, Glass Removing Device (1) to hold the cutting wire, pull it starting from the outside, back and forth releasing the window from the adhesive.
7. While cutting the window reposition the cutting wire and special tools, so as to cut the adhesive along the window completely.
10. Remove the rear window from the vehicle with an assistant, use the glass handling suction cups.
    
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Installation Procedure

1. If reusing or replacing the window, use the appropriate tool, remove the auto-adhesive bead on the window surface and pinch-weld flange to approximately 2 mm (0.078 in).
2. Clean the bonding area on the window.
   
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3. Apply bonded-glass primer and let dry per auto-adhesive instructions by the manufacturer’s.
   
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4. Apply the auto-adhesive primer-application (2) around the perimeter of the rear window (1) per auto-adhesive instructions by the manufacturer’s.
   
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5. Cut the applicator nozzle to provided a V cut to apply the auto-adhesive.
   
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6. Install the sealing strip to the bottom of the rear window.
Note: If the locating pins were cut off it will be necessary to tape the window in place until the auto-adhesive cures per auto-adhesive instructions by the manufacturer’s.

7. With an assistant, use the glass handling cups, align the window locating pins to the slots located in each corner of the pinch-weld flange. Lower the window to touch the auto-adhesive.
   
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8. Remove the glass handling cups.
9. Gently depress the window on the auto-adhesive bead until the window is seated 1 mm (0.039 in) below the roof.
   
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10. Use masking tape (1) to hold the window (2) in the position until the auto-adhesive completely cures.
    
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11. Connect the rear window defogger electrical connectors to the bus bars.
12. Connect the connector from the radio antenna module.
13. Install the rear edge of the headliner.
14. Make sure to observe the auto-adhesive curing time before releasing the vehicle per auto-adhesive instructions by the manufacturer’s.
Note: Following the auto-adhesive installation instructions, using nafta to remove any excess of auto-adhesive within 30 minutes, otherwise it will not be possible to remove the auto-adhesive excess unless using mechanical means.

15. Remove the double layer of masking tape around the perimeter of the painted surfaces and the interior trim.
Note: Do not direct a hard stream of high pressure water to the freshly applied auto-adhesive.

16. Use a soft spray of warm water in order to immediately water test the window.
    
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17. Inspect the window for leaks.
18. If any leaks are found, use a plastic paddle in order to apply extra auto-adhesive at the leak point.
19. Retest the window for leaks.
20. Maintain the following conditions in order to properly cure the auto-adhesive:
• Partially lower a door window in order to prevent pressure buildups when closing doors before the auto-adhesive cures.
• Do not drive the vehicle until the auto-adhesive is cured. Refer to the above curing times.
• Do not use compressed air in order to dry the auto-adhesive.
21. Clean any excess auto-adhesive from the body.
    
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22. Close the rear compartment lid.
23. Ensure that the electrical components are working properly.