Important: Before cutting out a stationary window, apply a double layer of masking
tape around the perimeter of the painted surfaces and inner trim of the window.
- Remove the rear window garnish lower molding. Refer to
Body Rear Inner Panel Carpet Replacement
in Interior Trim.
- Lower rear seat back.
- Disconnect the electrical
connector from the rear window defogger on the rear window, if equipped.
Caution: When working with any type of glass or sheet metal with exposed or rough
edges, wear approved safety glasses and gloves in order to reduce
the chance of personal injury.
- Use safety
glasses and gloves.
- Using a sharp utility
knife, make a preliminary cut around the perimeter of the rear window. Cut
as close to edge of the rear window as possible.
Important: Keep the cutting edge of the tool against the stationary window. This
will allow the urethane adhesive to be separated from the stationary
window. Leave a base of urethane on the pinchweld flange. The
only suitable lubrication is clear water.
- Use the J 24402-A
or J 39040
in order
to cut the window from the pinchweld flange. Do this from inside the
vehicle in order to protect the outer paint surface.
- Open the rear window.
- With the aid of an assistant, using the suction cups to remove
the rear window from the opening.
- Verify all primers and urethane adhesive are within expiration
dates.
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.
- Inspect
the following components for the cause of a broken rear window:
• | The flange of the rear window opening |
• | The rear window reveal moldings |
- 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 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 DE17®,
DuPont 2610®, Sherwin-Williams PSE 4600 and
NP70® and Martin-Semour 5120 and 5130®
products are approved for this application.
- After repairing the opening as indicated, perform the following steps:
4.2. | Remove no more of the urethane adhesive from the pinchweld than
necessary in order to maintain the original shape. This will ensure
the proper clearance between the rear window and the
pinchweld flange. |
4.3. | Remove all traces of broken glass from the outer cowl panel, seats,
floor and defroster ducts. |
4.4. | 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. |
- After repairing the opening as indicated, shake the pinchweld
primer (black #3) for at least 1 minute.
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.
- Use a new dauber to apply the pinchweld primer (black #3) to
the surface (1) of the bonding area on the body only.
- Allow the primer to dry for approximately 10 minutes. Ensure
that all nicks and scratches are covered.
- 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 assistant and using suction cups remove the rear
window from the opening.
- Place the rear window inside up on a clean, protected surface.
- If the original rear window is being reused remove all but a thin
film of the existing urethane adhesive from the rear window surface by
using a clean utility knife or razor blade scraper.
- 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.
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.
Important: Use care when applying prep (clear #1) in the rear window. This
primer dries almost instantly, and may stain the viewing area of the rear
window if not applied evenly.
- Use a new dauber in order to apply glass prep (clear #1) to the
area approximately 10- l6 mm (3/8-5/8 in) around
the entire perimeter of the window inner surface.
- Apply a second coat of the glass prep number (clear #1)
to the same area of the glass.
- Wipe the glass primed area immediately with a clean lint free
cloth.
- Shake the glass primer (black #2) for at least 1 minute.
- 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.
The glass primer (black #2) is good up to 8 hours after applying
it to the glass. The primed surface of the glass must be kept clean.
- Allow the glass 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 of 12.7 mm (1/2 in) wide and 12.7 mm
(1/2 in ) high.
- Use a cartridge type caulking
gun to apply a smooth, continuous bead of urethane adhesive.
- 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 (1) to the inner surface of the rear window (3).
If applying urethane adhesive to the inside edge of the rear window
reveal molding (1) use the rear window reveal molding as a guide for the
nozzle.
- Place the rear window on the lower supports.
- With the aid of an assistant, use the suction cups in order to
install the rear window into the opening.
- Align the tape lines on the rear window and the body.
- Press the rear window firmly into place.
- Clean any excess urethane adhesive from the body.
- Tape the rear window to
the body in order to minimize movement until the urethane adhesive cures.
Important: Do not direct a hard stream of high pressure water to the freshly applied
urethane adhesive.
- Use a soft spray of warm water in order to immediately water test the
rear window window.
- Inspect the rear window for leaks.
- If any leaks are found, use a plastic paddle in order to apply
extra urethane adhesive 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 . |
Do NOT physically disturb the repair area until after these minimum
times have elapsed.
- The following conditions must be maintained to properly cure the urethane:
40.1. | Partially lower a door 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 electrical
connector to the rear window defogger on the rear window, if equipped.
- Install the rear window garnish lower molding. Refer to
Body Rear Inner Panel Carpet Replacement
in Interior Trim.
- Raise seat back.
- Remove the protective coverings and tape from the vehicle rear
and headliner.
- Close the rear window.