Sierra

Information on Aero Shutter Related Diagnostic Codes – 2019-2021 Cadillac Chevrolet GMC

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2021 Chevrolet Tahoe

NHTSA ID Number: 10198869 Manufacturer Communication Number: 21NA077   Summary This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.     11 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 1500 2019-2021 CHEVROLET SILVERADO 2500 2020-2021 CHEVROLET SUBURBAN 2019-2021 CHEVROLET TAHOE 2019-2021   Condition Some customers may comment on seeing a Check engine … Read more

Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel – 2021 Chevrolet Silverado & GMC Sierra

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2021 Chevrolet Silverado

NHTSA ID Number: 10198870 Manufacturer Communication Number: 21NA079   Summary This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error.     4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 1500 2021 … Read more

Add-On Equipment Inoperative, Sulfur/Acid Smell During Vehicle Operation – 2020-2021 Chevrolet Silverado & GMC Sierra HD 2500/3500

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2021 Chevrolet Silverado

NHTSA ID Number: 10192032 Manufacturer Communication Number: 21NA062   Summary This informational bulletin directs dealers to the correct path needed to correct a vehicle with the condition of Add-On Equipment Inoperative, Sulfur/Acid Smell During Vehicle Operation based on the correct cause.     4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 2020-2021 GMC SIERRA 2500 … Read more

DTC’s P05AE or P059F Set Current or History – 2020-2021 Chevrolet Silverado & GMC Sierra 2500HD/3500HD

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2021 Chevrolet Silverado

NHTSA ID Number: 10192036 Manufacturer Communication Number: 21NA071 Summary This technical bulletin provides repair information to correct a customer concern of DTC?s P05AE or P059F Set Current or History.   Condition DTC’s listed below set in current, or history. DTC P05AE – Active Grille Air Shutter 2 Performance DTC P059F- Active Grille Air Shutter 1 Performance   … Read more

Service Engine Mount Does Not Have an Active Mount Solenoid – DTC C11F0 and/or C11F1 Set – 2020 Chevrolet Silverado & GMC Sierra 1500

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2020 Chevrolet Silverado 1500

NHTSA ID Number: 10192037 Manufacturer Communication Number: 21NA072   Summary This informational bulletin advises the tech that the solenoid style engine mounts are being replaced with standard non solenoid mounts.     2 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 1500 2020 GMC SIERRA 1500 2020   Condition Some technicians may find when replacing the engine … Read more