Caution: When replacing stationary windows, use Urethane Adhesive Kit GM P/N 12346392
(Canadian P/N 10952983), or a urethane adhesive system meeting GM Specification
GM3651G, to maintain original installation integrity. Failure to use the urethane
adhesive kit will result in poor retention of the window which may allow unrestrained
occupants to be ejected from the vehicle resulting in personal injury.
- Verify all primers and urethane adhesive are within expiration dates.
- Inspect the following components for the causes of a broken rear
window:
| • | The flange of the rear window opening |
| • | The rear window reveal molding |
- Inspect for any of the following problems in order to help prevent
future breakage of the rear window:
| • | Hardened spot weld sealer |
| • | Any other obstruction or irregularity in the pinchweld flange |
Important: If corrosion of the pinchweld flange is present, or if sheet metal repairs
or replacements are necessary, refinish the pinchweld flange in order to present
a clean primer only surface. If paint repairs are required,
mask the flange bonding area prior to the application
of the color coat in order to provide a clean primer
only surface. Materials such as BASF DE17®,
DuPont 2610®, Sherwin-Williams PSE 4600 and NP 70
and Martin-Semour 5120 and 5130 products are approved for this
application.
- After repairing the opening as indicated, perform the following steps:
- Inspect the condition of the window opening and the urethane
adhesive bead to determine which installation method should be used. Refer
to
Short Method Description
or
Extended Method Description
for guidelines.
- Remove all traces of broken glass from the vehicle.
- Clean around the edge of the inside surface of the rear window
with a 50/50 mixture of isopropyl alcohol and water by volume on a dampened
lint free cloth.
Caution: 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.
- After repairing the opening as indicated, shake the pinchweld primer
(black #3) for at least 1 minute.
Use a new dauber to apply the pinchweld primer (black #3) to
the surface of the bonding area.
- Allow the primer to dry for approximately 10 minutes. Ensure
that all nicks and scratches are covered.
- If the original reveal molding is damaged
it must be replaced, if equipped.
Install the new rear window reveal molding (1).
Start from the center and hand press the rear window reveal molding (1)
onto the rear window (2).
- With the aid of an assistant, dry fit
the rear window in the opening in order to determine the correct
way to position the rear window in the opening.
- Use masking tape in order to mark the location of the rear window
in the opening.
- Slit the masking tape at the top edge of the rear window.
- With the aid of an assistant and the suction cups, remove the
rear window.
- Place the rear window inside up on a clean, protected surface.
- If the original rear window is being reused, remove all but approximately
2 mm (3/64 in) of the existing urethane adhesive from the
rear window surface, using a utility knife or razor blade scraper.
Important: Do not remove all traces of the adhesive. Remove all mounds or loose
pieces of urethane adhesive .
- If the extended method is being used remove all but approximately
2 mm (3/64 in) of the existing bead of adhesive from the pinchweld
flange.
Important: Do not apply the (black #3) primer to the existing bead of the
urethane adhesive. Apply the primer only to nicks, scratches or the primed
surfaces.
- Shake the pinchweld primer (black #3) for at least 1 minute.
- Use a new dauber to apply the primer to the surface of the pinchweld
flange.
- Allow the pinchweld primer to dry for approximately 10 minutes.
- If the extended method is being performed, do the following:
Important: Use care when applying the prep (clear #1) to rear window.
- This primer dries almost instantly and may stain the viewing area
of the rear window if not applied evenly.
| 22.1. | Use a new dauber, to apply the rear window prep (clear #1)
to an area approximately 10-16 mm (3/8-5/8 in)
around the entire perimeter of the rear glass inner surface. The glass
must be installed within 8 hours after applying the primer
to the glass. |
| 22.2. | The primed surface of the glass must be kept clean. |
| 22.3. | Allow the glass primer to dry for approximately 10 minutes. |
- Shake the rear window primer (black #2) for at least 1 minute.
- Use a new dauber, in order to apply the
rear window primer (black #2) to the areas of the rear window (1)
to which prep (clear #1) was applied.
- Allow the primer to dry for approximately 10 minutes.
- If using the short method, cut the tip
of the applicator nozzle in order to provide a bead of 6.0 mm
(1/4 in).
- If using the extended method, cut the applicator nozzle in order
to provide a bead 10.5 mm (0.14 in) wide and 10.5
mm (0.14 in) high.
- Use a cartridge-type caulking gun, apply
a smooth continuous bead of new urethane adhesive around the edge
of the rear window where the primer was applied.
- When using the short method, apply the urethane adhesive to the
existing bead of urethane adhesive on the body.
- When using the extended method, use the
edge of the rear window or the inside edge of the reveal molding
as a guide for the nozzle in order to apply the urethane adhesive
to the inner surface of the rear window.
- With the aid of an assistant, use the
suction cups in order to install the rear window into the opening.
- Align the tape on the rear window and on the body.
- Press the rear window firmly into place in order to wet-out and
seat the urethane adhesive.
- Tape the rear window in places to the body in order to minimize
movement until the urethane adhesive cures.
- Clean any excess urethane adhesive from
the body.
Important: Do not direct a hard stream of high pressure water at the fresh urethane
adhesive.
- Use a soft spray of warm water in order to immediately water test the
rear window.
- Inspect the rear window for leaks.
- If any leaks are found, use a plastic paddle in order to apply
extra urethane at the leak point.
- Retest the rear window for leaks.
Caution: 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 . |
- The following conditions must be maintained to properly cure the urethane
adhesive:
| 40.1. | Partially lower a door rear window in order to prevent pressure
buildups when closing doors before the urethane adhesive cures. |
| 40.2. | Do not drive the vehicle until the urethane adhesive is cured.
Refer to the above curing times. |
| 40.3. | Do not use compressed air in order to dry the urethane adhesive. |
- Connect the rear window
defogger connectors.
- Connect the rain sensor. Refer to
Windshield Outside Moisture Sensor Replacement
in Wipers/Washer Systems.
- Connect the OnStar® antenna. Refer to
Mobile Telephone Antenna Inner Coupling Replacement
in Cellular Communication.
- Install the rear sail panels. Refer to
Sail Panel Replacement
in Interior Trim.
- Install the rear window lower garnish molding and fasteners that
securing the molding to the body.
- Remove the double layer of masking tape around the perimeter of
the painted surfaces and the interior trim.
- Close the rear compartment.
