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NHTSA ID Number: 10178280
Manufacturer Communication Number: 20NA125
Summary
This technical bulletin provides repair information to correct a customer concern of hearing a rattle or creak noise from the quarter panel area while traveling at highway speeds.
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
| CHEVROLET | CORVETTE | 2020 |
SEOCONTENT-START
Copyright 2020 General Motors
LLC. All Rights Reserved.
Service Bulletin Bulletin No.: 20-NA-125
Date: June, 2020
TECHNICAL
Subject: Rattle or Creak Noise from Quarter Panel Area While Traveling at Highway Speeds
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Corvette 2020 2020 — — All All
Involved Region or Country North America, Middle East
Condition Some customers may comment on hearing a rattle or creak noise coming from the
quarter panel area while traveling at highway speed.
Cause
5614871
Note: The contact area is shown circled in yellow in the graphic above.
The cause of the condition may be that the lower quarter extension may have
interference contact with the rocker panel, creating the noise.
Correction
Verify which side has the condition and adjust the quarter panel extension to obtain
clearance between the extension and rocker panel. Follow the steps in the Service
Procedure below.
Page 2 June, 2020 Bulletin No.: 20-NA-125
Service Procedure
5369100
1. On the affected side, locate the lower bolt (1) that
holds the quarter panel and extension.
2. Loosen the bolt.
5614873
3. Pull outboard on the extension in order to achieve
a 1 mm clearance between the extension and the
rocker panel.
4. Hold in this clearance position and retighten
the bolt.
Tighten
Tighten the bolt to 9Y(80 lb in).
Bulletin No.: 20-NA-125 June, 2020 Page 3
Parts Information
No parts are required for this repair.
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
1086178* Adjust Quarter Panel
Extension Gap
0.2 hr
*This is a unique Labor Operation for bulletin use only.
Version 1
Modified Released June 04, 2020
GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these
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 your GM dealer for information on whether your vehicle may benefit from the
information.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 20-NA-125
Date: June, 2020
MC-10178280-9999.pdf 105.379KB
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