2009 GMC Acadia

Windshield, quarter glass, and back glass removal and replacement instructions
By Bob Beranek
September 14, 2009
AUTO

Sponsored by Extractor

© 2009 National Glass Association. All rights reserved. Visit GlassMagazine.com for glass removal and replacement instructions for more than 400 vehicles. To sign up to receive the For Technicians Only e-bulletin, email FTO@glass.org

Vehicle type: Four-door utility vehicle

NAGS® numbers*: Windshield part numbers DW1712 solar and DW1713 solar, head-up display (HUD); quarter glass DQ11274/75–R/L solar, with rubber spacer option; and back glass DB11276 solar, heated  

Helpful tools or supplies: If the vehicle is equipped with HUD, you will need to apply GM triangular setting blocks in strategic areas on the floor of the pinchweld to ensure the glass does not sit too low and cause the HUD image to be distorted.

Watch for: The top and side windshield moldings are underside moldings that come attached to the new glass. The top corners stick up, even on the OE installation. Make sure to point this out to the customer before beginning the installation. 

*With permission from National Auto Glass Specifications. Call NAGS at 800/551-4012 or visit http://glass.mitchell.com/.

A. Windshield
Preparation

1. Cover the front seats, floorboards, dash and steering wheel with a clean drop cloth or disposable plastic covers. Note: Always wear eye and hand protection when working with glass. Make sure you have the right glass and moldings and that the urethane systems you are about to use are current. Windshield part numbers are DW1712 and DW1713.

2. Drape the fender with a fender cover and tape up any vulnerable areas on the vehicle to protect against possible damage. Tape up the defroster vents to prevent debris from falling into the openings.

3. To remove the rearview mirror, loosen the 20T Torx set screw at the base of the mirror and slide the mirror off the pad.

4. Remove the windshield-wiper nut covers.

5. Remove the windshield-wiper nuts using a 15-millimeter wrench or socket. Move the wiper arm in an up-and-down motion to break it loose from the post, or use a wiper-puller. Caution: Wipers can sometimes be hard to remove. To avoid stressing the post, use a wiper-puller.

6. The top and side moldings are underside moldings that come attached to the new glass. The top corners stick up, even on the OE installation. Make sure to point this out to the customer before beginning the installation. 

7. Remove the four push-in-type retainers at the leading edge of the cowl panel.  
 

8. Remove the ground bolt on the passenger-side corner.   

9. Pull up and release the underside retainers under the cowl fascia.

10. Disconnect the washer hoses, and remove the cowl panel and set it in a safe place. There are no extra steps necessary when removing the windshield on vehicles equipped with HUD. Note: Before beginning windshield removal, verify the new windshield is the correct one and the urethanes and primers are current. Never use outdated products as this could jeopardize the structural integrity of the vehicle and the safety of its passengers.

Removal
11. Make sure cutting blades are sufficiently sharp.

12. Before cutting out the windshield, remove contaminants from the glass and pinchweld to prevent contact with the urethane.

13. Use the cutting tools of your choice to remove the glass from the adhesive bead. If you use a power tool, lubricate the cutting area with water. Spray the top and sides; then make your cuts. Be careful not to hit or cut the gravity stops; mark their location with a marking pencil or retention tape. Note, there is plenty of room to cut out the glass without damage to the pinchweld area. Take care, however, in case of tool failure or technician error. 

14. Take the windshield out of the opening using vacuum cups. Make sure the vacuum cups do not overlap a crack in the glass. Lift the glass and place it on a windshield stand or suitable workstation.

Installation
15. After cutting the windshield out, remove contaminants such as dirt, moisture and debris from the pinchweld. Clean the dashboard.

16. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

17. Place your vacuum cups on the new windshield in the appropriate location.

18. Set the windshield onto the old urethane.

19. With the windshield resting in the opening, make sure it is in the right spot.

20. Adjust both sides to the correct setting, marking the passenger side, then the driver side. Lift the glass and place it on a windshield stand or suitable workstation.

21. Follow the urethane manufacturer’s recommendations for installation.

22. Clean the inside of the windshield using a urethane manufacturer-recommended product. Do not touch the bonding area of the windshield after cleaning, prepping or priming it.

23. Wear powder-free Nitrile gloves to protect against harsh chemicals.

24. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

25. Using the tool of your choice, remove the original urethane bead, leaving 1 millimeter to 2 mm of existing urethane on the pinchweld. Make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

26. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

27. If the vehicle is equipped with HUD, apply GM triangular setting blocks in strategic areas on the floor of the pinchweld to ensure the glass does not sit too low and cause the HUD image to be distorted.

28. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

29. Lift the windshield from the windshield stand or workstation using vacuum cups. Set the windshield on the urethane at the mark you made during your dry fit. Lower the driver’s side of the windshield onto the urethane and line it up with the dry-fit mark; it is now in place.

30. The windshield is now ready to be decked. Press firmly to ensure a good seal.

31. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the windshield. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

32. Re-install the removed parts in reverse order.

33. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer. Warning: Disregarding the safe drive-away time that your urethane manufacturer recommends could jeopardize the structural integrity of the vehicle and the safety of its passengers.

34. You have completed the removal and replacement of the windshield.

B. Quarter glass
Removal
1. Make sure you have the right glass. Quarter glass part number is DQ11274/75–R/L. The glass comes with a rubber spacer option and is exposed on all four sides. 

2. Remove the interior garnish moldings by first removing the decorative cap over the seatbelt bolt.  Remove the seatbelt bolt.

3. Grasp and separate the interior molding from the quarter panel to expose the interior edge of the pinchweld.

4. Cut out the quarter glass using the tools of your choice. Be careful not to damage the exposed paint on the exterior of the vehicle.

Installation
5. After cutting the quarter glass out, remove contaminants such as dirt, moisture and debris from the pinchweld.

6. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

7. Place your vacuum cups on the new quarter glass in the appropriate location.

8. Set the glass onto the old urethane.

9. With the glass resting in the opening, make sure it is in the right spot and make your marks.

10. Lift the glass and place it on a windshield stand or suitable workstation.

11. Follow the urethane manufacturer’s recommendations for installation.

12. Clean the inside of the quarter glass using a urethane manufacturer-recommended product. Do not touch the bonding area of the glass after cleaning, prepping or priming it.

13. Wear powder-free Nitrile gloves to protect against harsh chemicals.

14. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

15. Using a pinchweld scraper, remove as much of the original urethane as the urethane manufacturer recommends.  Before removing the old urethane, make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

16. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

17. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

18. Lift the quarter glass from the windshield stand or workstation using vacuum cups. Set the quarter glass on the urethane at the marks you made during your dry fit; it is now in place.

19. The quarter glass is now ready to be decked. Press firmly to ensure a good seal.

20. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the quarter glass. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

21. Re-install the removed parts in reverse order.

22. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer.

23. You have completed the removal and replacement of the quarter glass.

C. Back glass
Removal

1. Make sure you have the right glass. Back glass part number is DB11276. The glass is exposed on three of the four sides.  The top is covered by a rear spoiler.

2. Remove the rear wiper--it points to the passenger side--by removing the cap and the 13-mm nut. Disconnect the washer hose and set aside.

3. Remove the five, 10-mm nuts from the spoiler mounting bolts. The spoiler is held in place with five clips that require a slot screwdriver.  Insert the tip of the screwdriver into the slots and release the clips.  Start on the ends and work inward.  

4. The high-mounted brake light is located in the spoiler so the spoiler will be wired for power.  Find the connector and disconnect, or carefully lay the spoiler on the roof after protecting it with fender covers.

5. Remove the rear-door piston from the driver side by removing the ball joint clip with a pick or pocket screwdriver.  Separate the piston from the ball joint.

6. Remove the interior garnish molding around the glass opening.

7. Disconnect the two defroster connectors.

8. Cut out the glass using the tools of your choice.

Installation
9. After cutting the back glass out, remove contaminants such as dirt, moisture and debris from the pinchweld.

10. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

11. Place your vacuum cups on the new back glass in the appropriate location.

12. Set the back glass onto the old urethane.

13. With the back glass resting in the opening, make sure it is in the right spot.

14. Adjust both sides to the correct setting, marking the passenger side, then the driver side. Lift the glass and place it on a windshield stand or suitable workstation.

15. Follow the urethane manufacturer’s recommendations for installation.

16. Clean the inside of the back glass using a urethane manufacturer-recommended product. Do not touch the bonding area of the back glass after cleaning, prepping or priming it.

17. Wear powder-free Nitrile gloves to protect against harsh chemicals.

18. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

19. Using a pinchweld scraper, remove as much of the original urethane as the urethane manufacturer recommends. Before removing the old urethane, make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

20. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

21. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

22. Lift the back glass from the windshield stand or workstation using vacuum cups. Set the back glass on the urethane at the mark you made during your dry fit. Lower the driver’s side of the back glass onto the urethane and line it up with the dry-fit mark; it is now in place.

23. The back glass is now ready to be decked. Press firmly to ensure a good seal.

24. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the back glass. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

25. Re-install the removed parts in reverse order.

26. Check the operation of the back glass electrical systems.

27. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer. Warning: Disregarding the safe drive-away time that your urethane manufacturer recommends could jeopardize the structural integrity of the vehicle and the safety of its passengers.

© 2009 National Glass Association. All rights reserved. Visit GlassMagazine.com for glass removal and replacement instructions for more than 400 vehicles. To sign up to receive the For Technicians Only e-bulletin, email FTO@glass.org

 

The author is president of Automotive Glass Experts in Sun Prairie, Wis. Write him at bberanek@aol.com.