G 30 Van V8-454 7.4L VIN J SFI (1996)
Window Seal: All Technical Service Bulletins
Front Door and Windshield Molding - Wind Noise
File In Section: 10 - Body
Bulletin No.: 66-15-11
Date: February, 1997
Subject:
Front Door and Windshield Molding Wind Noise (Adjust Doors, Seal Door
Openings and Secure Windshield Molding)
Models:
1996-97 Chevrolet and GMC G Vans (Plant VIN Code 1)
Condition
Some owners may comment about excessive wind noise from the front doors.
Cause
Marginal sealing around the front doors, windows and door mirror openings. The position of the windshield weatherstrip top outer molding may also
affect this concern.
Correction
Take the customer for a test ride to verify the condition and identify the wind noise leak paths. Applying masking tape over a suspected leak path area
during the road test may help isolate the leak source. Based on the results of the test ride, correct as required following the service procedure. Not all
locations identified in the service procedure may require correction. After completing the required service procedures, and prior to delivering the van
back to the customer, road test to verify the customer's concerns have been corrected.
Important:
If the van is equipped with after market equipment such as a Bug Deflector and/or Window Shades, the customer should have them removed prior to
performing a road test.
Service Procedure
The following areas are listed in their relative order of probable noise severity.
1.
The Front Doors may be outboard of the weatherstrip seal and "B" pillar on the upper rear edge of the door (Figure 1). Open the door and, with the
window rolled all the way up, carefully bend (finesse) the upper rear edge inboard until the corner edge of the door is flush with "B" pillar outer
sheet metal. To verify proper seating of the door seal, take a piece of paper folded in half, put it next to the door seal and then shut the door on it.
The paper should be snug.