Month: March 2022

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

Malfunction Indicator Lamp (MIL) Illuminated – DTC P3055 and/or P3056 Set – 2019-2021 Chevrolet Silverado & GMC Sierra 1500

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2021 Chevrolet Silverado 1500

NHTSA ID Number: 10198889 Manufacturer Communication Number: 21NA121 Summary This technical bulletin provides a procedure to inspect fuses F51DR and/or F52DR in the X51R right instrument panel fuse block when they should not be installed.     Condition Some customers may comment that the Stop/Start function is inoperative, and the MIL is illuminated. Some technicians may find … Read more