Removal Procedure
Tools Required
• | J 24402-A Glass
Sealant (Cold Knife) Remover |
• | Adhesive Kit GM P/N 12346392 or equivalent. |
• | Solvent for cleaning the edge of the window ( use GM Glass Cleaner P/N
1050427 or isopropyl alcohol ) or equivalent |
• | Commercial-type utility knife used to cut around the edge of the
window |
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.
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.
Caution: At least 24 hours are required for complete curing of repair
material. The repair area should not be physically distrubed until after that
time. Insufficient curing of urethane adhesive may allow unrestrained occupants
to be ejected from the vehicle resulting in personal injury.
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.
Caution: If broken glass falls into the defroster outlets, it can be blown into
the passenger compartment and cause personal injury.
- Remove the windshield
wiper arms. Refer to
Windshield Wiper Arm Replacement
in
Wipers/Washers Systems.
- Remove the air inlet grille. Refer to
Air Inlet Grille Panel Replacement
in Body Front End.
- Mask off the area around the windshield to protect painted surfaces
and the headliner, and as an aid in cleanup after the windshield installation.
- Cover the defroster grille openings.
- Remove the drip rail moldings.
- Remove the windshield side reveal moldings (4). Refer to
Windshield Side Reveal Molding Replacement
.
- Remove the rearview mirror (3). Refer to Refer to
Inside Rearview Mirror Replacement
.
- Remove the windshield garnish moldings. Refer to
Windshield Pillar Garnish Molding Replacement
in Interior Trim.
- Remove the headliner. Refer to
Headlining Trim Panel Replacement
.
- Using a sharp utility knife make a preliminary cut around the
perimeter of the windshield. Cut as close to the edge of the windshield as
possible.
- Cut out the windshield
keeping the blade as close to the edge of the windshield as possible using J 24402-A
Glass Sealant Removal
Knife.
- Push out on the windshield and insert wooden blocks between the
windshield and the A-pillars.
- From the inside of the vehicle, cut the windshield lower urethane
adhesive head using J 38454
Windshield Removal Knife.
- With the aid of an assistant, use suctions cups to lift the windshield
from the opening.
- Remove the windshield from the vehicle.
- The following components may reveal the causes of a broken windshield:
• | The flange of the windshield opening. |
• | The windshield reveal molding. |
- Look for any of the following conditions in order to prevent damage
to the windshield:
• | Hardened spot weld sealer |
• | Any obstruction or irregularity in the pinchweld flange |
- Inspect the condition of the windshield opening and the adhesive
bead in order to determine which installation method you will use. Refer to
Short Method Description
or
Extended Method Description
.
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 repairs to the paint are required,
mask the flange bonding area prior to the application of the color
coat in order to provide a clean primer only surface. Use material
such as BASF DE17®, DuPont 2610®, and PPG DP40® products
are approved for this application.
- After repairing the opening as indicated, perform the following steps:
- Thoroughly shake the primers that are provided in urethane adhesive
kit GM P/N 12346392, or equivalent.
- Clean the windshield and pinchweld flange with a clean, dampened
cloth using GM Window Cleaner GM P/N 1050427 or isopropyl alcohol
in order to clean the surface of the windshield and the pinchweld
flange of the excess urethane adhesive.
- Use a new dauber to apply
the pinchweld primer (Black #3) to the primed surface on the pinchweld flange (1)
and to any exposed painted surfaces or any scratches in the metal in
the bonding area.
- Allow approximately 10 minutes drying time for the pinchweld primer
(Black #3).
Installation Procedure
- Firmly press the reveal
molding retainer (4) onto the edge of the windshield (2).
- With the aid of an assistant,
dry fit the window in the opening in order to determine the correct position.
- Use masking tape in order
to mark the location of the windshield in the opening.
- Slit the masking tape at the top edge of the windshield.
- With the aid of an assistant
remove the windshield.
- Place the windshield inside up on a clean, protected surface.
- If the you reuse the original
window (1), remove all but a thin film of the existing urethane adhesive (3)
from the window surface (2), using a utility knife or equivalent.
- Clean the inside surface of the windshield with GM Glass Cleaner
P/N 1050427 or the equivalent.
Important: Failure to install the acoustic strip could cause windshield breakage.
- Install the acoustic strip (1).
- If the extended installation method is being performed:
10.1. | Remove all but a thin film of the existing bead of adhesive from
the pinchweld flange. |
10.2. | It is not necessary to remove all the traces of the urethane adhesive,
but there should not be any mounds or loose pieces of the adhesive. |
10.3. | Thoroughly shake the pinchweld primer (#3 black). |
10.4. | Use a new dauber in order to apply the pinchweld primer (#3 black)
to exposed painted surfaces or scratches in the pinchweld flange in the bonding
area. |
10.5. | Allow approximately 10 minutes drying time for the pinchweld primer
(#3 black). |
Important: Use care when applying the windshield prep (#1 clear) in order to prevent
the windshield prep (#1 clear) from running into the vision area of the windshield.
This windshield prep (#1 clear) may stain the viewing area of the
windshield if not applied evenly. This windshield prep (#1 clear) dries
almost instantly.
- Using a new dauber, apply
windshield prep (#1 clear) to an area approximately 10-16 mm
(3/8-5/8 in) around the entire perimeter of the windshield
inner surface and to any exposed edges of the window.
- Immediately wipe the primed area with a clean cloth.
- Thoroughly shake the windshield
primer (#2 black).
- Using a new dauber, apply the windshield primer (#2 black) to
the same areas where you applied the windshield prep (#1 clear).
- Allow approximately 6 minutes for drying the windshield
primer (#2 black).
- Prior to application of
the urethane adhesive, cut the tip of the applicator nozzle in order to provide
the following bead sizes:
• | For the short method, cut the tip in order to provide an adhesive
bead of approximately 4.5 mm (1/8-3/16 in). |
• | For the extended method, cut the tip in order to provide an adhesive
bead of approximately 14 mm (9/16 in). |
- Using a cartridge-type
caulking gun, apply a smooth continuous bead of urethane adhesive.
- When using the short installation method, apply the urethane adhesive
to the existing bead of urethane adhesive on the body.
- When using the extended
installation method, use the edge of the window or the inside edge of the
reveal molding as a guide for the nozzle.
- With the aid of an assistant,
use rubber suction cups in order to install the window in the opening.
- Align the tape on the
windshield (2) and on the body (1).
- Press the windshield firmly into place to wet-out and seat the
urethane adhesive.
- Tape the windshield to
the body in order to minimize movement until the urethane adhesive cures.
- Remove any excess urethane adhesive.
Important: Warm or hot water accelerates the cure of the adhesive. 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
windshield.
- Inspect the windshield for leaks.
- If you found any leaks, use a plastic paddle in order to apply
extra urethane at the leak point.
- Complete the following steps in order to properly cure the urethane
adhesive:
• | Keep the vehicle at a room temperature of 22° C (72 F)
at 30 percent relative humidity. |
• | Allow a minimum of (6 hours) for the moisture curing urethane
adhesive. |
• | Allow a minimum of (1 to 1-1/2 hours) for the chemical curing
urethane adhesive. |
• | Partially lower a door window in order to prevent pressure build-ups
when you close doors prior to the urethane adhesive cure. |
• | Do not drive the vehicle until the urethane adhesive is cured. |
• | Do not use compressed air in order to dry the urethane adhesive. |
- Install the headliner.
Refer to
Headlining Trim Panel Replacement
.
- Install the windshield garnish moldings. Refer to
Windshield Pillar Garnish Molding Replacement
in Interior Trim.
- Install the air inlet grille. Refer to
Air Inlet Grille Panel Replacement
in Body Front End.
- Install the windshield wipers arms. Refer to
Windshield Wiper Arm Replacement
in Wipers/Washers Systems.
- Install the rearview mirror. Refer to
Inside Rearview Mirror Replacement
- Install the windshield side reveal moldings (4). Refer
to
Windshield Side Reveal Molding Replacement
.
- Install the drip rail
moldings (2).
- Install the drip rail molding screws (3).
- Remove the protective tape and the coverings from the windshield
area .
- Wipe the windshield area with a clean, dampened cloth using GM
Window Cleaner GM P/N 1050427 or isopropyl alcohol in order
to clean the surface of the windshield of the excess urethane
adhesive.
Allow to air dry.