L/H Vent Window - Wind Noise
File In Section: 10 - BodyBulletin No.: 46-10-06
Date: December, 1994
Subject:
L/H Vent Window Wind Noise (Replace L/H Vent Window Assembly)
Models:
1992-94 Chevrolet and GMC Truck G Vans
Condition
Some customers may describe a high-pitch whistling sound, that could be perceived as cabin pressure build-up. They may also comment of a wind noise that originates in the radius "nose" area of the L/H vent window.
Cause
Some of the rubber seals on the L/H vent window assemblies weren't properly sealing against the vent glass frame. This condition has only been associated with the L/H vent assembly in the radius area of the vent frame. This condition allows air to enter between the vent glass radius and the vent window seal, thus creating a wind noise.
Correction
This condition has been corrected by enhancements to the L/H vent seal rubber. These enhancements are not noticeable to the eye, but all vent assemblies produced after August 10,1994 will contain the enhancements. A sticker is attached to the vertical support brace of the vent assembly. The sticker is similar to a retail price sticker, and it carries the month the vent assembly was manufactured,
followed by the day, and the year. Properly installed L/H vent window assemblies that were produced after 8 10 94 should not produce wind noise concerns. There has been no part number change and GMSPO has corrected inventory.
Service Procedure
Refer to Section 10A-1 Door of the appropriate service manual.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty.