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NHTSA ID Number: 10184142
Manufacturer Communication Number: PIT5161H
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.
SEOCONTENT-START
Bulletin No.: PIT5161H
Published date: 11/30/2020
Preliminary Information
PIT5161H Normal Characteristic – Bump Feel Or Clunk Noise After
A Stop
Models
Brand: Model: Model Years:
VIN:
Engine: Transmissions:
from to
Chevrolet Silverado 2007 – 2021 All All All All
GMC Sierra 2007 – 2021 All All All All
Supersession Statement
This PI was superseded to update the model years. Please discard PIT5161G.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
Some customers may comment on a bump feel or clunk noise at a stop or on launch.
Customers may also comment that the bump feel or clunk is noticed after the vehicle has
come to a complete stop and feels as if the vehicle was bumped from behind.
This concern may be more noticeable on trucks with larger fuel tanks (34 or 36 gallons
tanks).
Recommendations / Instructions
The bump clunk issue may be due to fuel movement in the fuel tank.
If the noise is eliminated or reduced when the fuel tank is either completely filled or very low
on fuel, the noise is isolated to fuel movement in the tank.
Please make no repair attempts, as this is considered a normal characteristic.
Customer Information
Please communicate to the customer this condition is a normal operating characteristic of
their vehicle. It will not impact the designed performance or reliability of the vehicle. Please
share this information with the customer, including a copy of this message.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.
Additional SI Keywords
driveshaft prop propshaft shaft yoke slip
© 2020 General Motors. All Rights Reserved.
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30 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 1500 | 2007-2014, 2017-2019, 2021 |
CHEVROLET | SILVERADO 2500 | 2015-2016, 2020 |
GMC | SIERRA 1500 | 2007-2010, 2012-2014, 2017-2019, 2021 |
GMC | SIERRA 2500 | 2015-2016, 2020 |
GMC | SIERRA 3500 | 2011 |
NHTSA ID Number: 10078738
Manufacturer Communication Number: PIT-5161-D
Summary
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE THE CONCERN. CUSTOMER HEARS A CLUNK WHEN STOPPING OR LAUNCHING.
1 Associated Document
Service Bulletin Document
PIT5161D
https://www.nhtsa.gov/recalls?nhtsaId=10078738
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5161H
Published date: 11/30/2020
https://www.nhtsa.gov/recalls?nhtsaId=10184142
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