Chevrolet Silverado / GMC Sierra. Manual — part 2996

Fig. 100: Performing Water Hose Test
Courtesy of GENERAL MOTORS CORP.

24. Use a soft spray of warm water in order to immediately water test the window.

25. Inspect the window for leaks.

26. If any leaks are found, use a plastic paddle in order to apply extra urethane adhesive at the

leak point.

27. Retest the window for leaks.

IMPORTANT: Do not direct a hard stream of high pressure water to the

freshly applied urethane adhesive.

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 greate r
and with at least 30 percent relative humidity. Allow

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

28. Maintain the following conditions in order to properly cure the urethane adhesive:

Partially lower a door window in order to prevent pressure buildups when closing
doors before the urethane adhesive cures.

Do not drive the vehicle until the urethane adhesive is cured. Refer to the above curing
times.

Do not use compressed air in order to dry the urethane adhesive.

29. Complete the window installation.

ADHESIVE INSTALLATION OF STATIONARY WINDOWS (REAR WINDOW)

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.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 101: Applying Pinch-Weld Primer
Courtesy of GENERAL MOTORS CORP.

1. Remove all mounds or loose pieces of urethane adhesive from the pinch-weld area.

2. If the original window is being reused, remove all but a thin film of the existing urethane

adhesive from the window surface by using a clean utility knife or razor blade scraper.

3. Inspect the following components for the causes of a broken window:

The flange of the window opening

CAUTION: Refer to GLASS AND SHEET METAL HANDLING

CAUTION .

IMPORTANT: Remove all but approximately 2 mm (3/64 in) of the existing

bead of urethane adhesive from the pinch-weld flange.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado