Chevrolet Silverado / GMC Sierra. Manual — part 2997
The window reveal molding
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
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.
6. Verify all primers and urethane adhesive are within expiration dates.
IMPORTANT: 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.
CAUTION: Refer to WINDOW RETENTION CAUTION .
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.
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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 (1).
9. Allow the pinch-weld primer to dry for approximately 10 minutes.
Fig. 102: Identifying Window Reveal Molding Installation Specifics
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not apply the black #3 primer to the existing bead (1) of
the urethane adhesive on the pinch-weld flange. Apply the
primer only to nicks, scratches or the primed surfaces.
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
10. If installing a new window reveal molding, start in the center and work toward each end
pressing firmly into place.
11. With the aid of an assistant, dry fit the window to the opening in order to determine the
correct position.
12. Use masking tape in order to mark the locations of the window in the opening.
13. Cut the masking tape in the center and remove the window from the opening.
Fig. 103: Applying Glass Prep
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Use care when applying glass prep clear #1 on the window.
This primer dries almost instantly, and may stain the viewing
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
14. 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.
Fig. 104: Applying Glass Prep
area of the window if not applied evenly.
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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