Rattle Flutter Flapping Wind Noise Coming From The Left Or Right Front Of The Vehicle – 2021 Chevrolet Tahoe & GMC Yukon

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Bulletin No.: PIT5765
Published date: 12/30/2020
Preliminary Information
PIT5765 Rattle Flutter Flapping Wind Noise Coming From The Left
Or Right Front Of The Vehicle
Models
Brand: Model: Model Years:
VIN:
Engine: Transmissions:
from to
Chevrolet Tahoe 2021 All All All All
GMC Yukon Models 2021 All All All All
Involved Region or Country North America
Condition
Some customers may comment on a rattle, flutter, flapping, and/or wind type noise
from the front end. The noise could be heard from either the left, right or both
sides of the vehicle and may occur at higher speeds. In some cases, the noise may
sound like it is coming from the windshield area.
Cause
The cause of the noise could be either the left or right front inner wheel well liner
having excessive movement in the area shown below (2).
1 – Driver’s wheel well liner
2 – Area where the wheel well liner is loose and making noise
3 – Driver’s front fender
4 – Inboard side of the driver’s front fender
5 – Foam/Butyl tape to be installed
6 – 10 mm gap between foam/butyl tape and flange on the fender
7 – Fender feature/body line
Correction:
To correct this concern apply a 1″x3″x1/4″ thick piece of foam, or a couple layers of butyl tape to the inside of the
fender as follows:
1. Partially remove the front wheel well liner to obtain access to the back/inboard side of the front fender (4).
2. If necessary, clean the back/inboard side of the fender to remove any dirt,mud, etc.
3. On the back/inboard side of the fender, start at the fender feature line (7) and 10mm from the fender flange
(6), and place the 1″x3″x1/4″ thick piece of foam or layers of butyl tape (5), as shown above.
Note: The foam/butyl needs to create a cross car interference with the fender liner return flange.
4. Reinstall the front wheel well liner. With the foam/butyl installed it may be necessary to use a trim pick or
similar tool to pull the wheel house liner to the full forward position.
5. Once the wheel well liner is installed there should be no fore/aft movement when the wheel well liner is
tapped or lightly pushed on.
Parts Information
Description Part Number
Foam 1″x3″x1/4″ thick or Butyl Tape Obtain locally
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation Description Labor Time
*1086248
Road Test, Partially remove wheel well liner and install
foam/butyl tape (one side)
0.7 Hr.
If necessary, add time to perform repair to opposite side 0.4 Hr.
*This is a unique Labor Operation for Bulletin use only.
Version History
Version 1
Modified 08/17/2020 – Created on.

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