Clunk Noise

Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event – 2020-2021 Chevrolet Silverado & GMC Sierra 2500HD/3500HD

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2021 Chevrolet Silverado

NHTSA ID Number: 10198888 Manufacturer Communication Number: 21NA120   Summary This technical bulletin provides the tech with a procedure to check if the transmission is the cause of the concern by checking the data.     4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 2020-2021 GMC SIERRA 2500 2020-2021   Condition Some technicians or customers … Read more

Information on Driveline Clunk Noise – 2020 and Prior GM Passenger Cars and Trucks

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2020 Chevrolet Silverado

NHTSA ID Number: 10168212 Manufacturer Communication Number: 990420002K Summary This informational bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operations.   532 Affected Products Vehicles BUICK CASCADA 2016-2019 BUICK ENCLAVE 2010-2020 BUICK ENCORE 2013-2020 BUICK ENVISION 2016-2020 BUICK LACROSSE 2010-2019 BUICK LUCERNE 2010-2012 BUICK REGAL 2011-2020 BUICK VERANO 2012-2017 … Read more

Bump Feel Or Clunk Noise After A Stop – 2007-2021 Chevrolet Silverado & GMC Sierra

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2021 Chevrolet Silverado

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 … Read more