CONDITION: Some customers may comment about a loud windnoise sounding like a hoot (similar to blowing across a bottle top) when the vehicle is driven at highway speeds and/or in strong crosswinds.
CAUSE: A low-pressure pocket forms around the upper front door frame area (refer to illustration on next page), and becomes larger and stronger at highway speeds or while driving in strong crosswinds. This low - pressure pocket pulls the front side door window secondary weatherstrip away from its sealing surface, creating a loud "hoot" type windnoise.
This windnoise is most likely to occur on doors that are misadjusted with the front side door window secondary weatherstrip only slightly touching the windshield and/or drip rail molding surface at the upper front door frame area.
CORRECTIVE ACTION: Adjust the top of the door frame inward so that the front side door window secondary weatherstrip is flush-to-slightly concave in appearance using the following procedure.
--------- CAUTION: FOR SAFETY REASONS AN ASSISTANT SHOULD DRIVE THE VEHICLE WHILE THE TECHNICIAN CHECKS FOR THE LOCATION OF THE REPORTED CONDITION.
1. Road test vehicle to verify concern.
2. Check the front side door window secondary weatherstrip appearance.
3. Open door and lower door glass to the full-down position.
4. Grasp the upper front portion of the door window frame shown in the following illustration and carefully pull inboard.
5. After a slight adjustment has been made, close the door and check the fit and appearance of the front side door window secondary weatherstrip along its mating surfaces (refer to illustration on page 2).
6. Repeat Steps 4 and 5 until desired adjustment is attained.
7. Check glass operation by raising and lowering the window glass. Also, check door operation by opening and closing the door to make sure it operates correctly.
8. Road test to verify the repair.
CLAIM INFORMATION: To receive credit for this repair, submit a claim through the Saturn Dealer System as follows: Labor Case Operation Type Description Code Time ---- ----------- --------- ---- VW Adjust Upper Door Frames T9648 0.6 hrs
Includes: Adjusting one or both front door frames.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.