Diagnostic Tips

Malfunction Indicator Lamp (MIL) Illuminated – DTCs P2832, P2837, P283C, P2841 and/or P2864 Set – 2020-2021 Chevrolet Corvette

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2021 Chevrolet Corvette

NHTSA ID Number: 10192035 Manufacturer Communication Number: 21NA070   Summary This service bulletin provides a procedure to perform a transmission solenoid clean procedure 3 times depending on what DTC has set.     2 Affected Products Vehicle MAKE MODEL YEAR CHEVROLET CORVETTE 2020-2021   Condition Some customers may comment that the MIL is illuminated. Some technicians may … 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

Loss of Steering Assist – DTC U3000-49 Set – 2021 Cadillac Chevrolet GMC

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2021 Chevrolet Tahoe

NHTSA ID Number: 10192038 Manufacturer Communication Number: 21NA073   Summary This technical bulletin provides a procedure to replace the steering gear if found the cause of the customers concern.     6 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2021 CADILLAC ESCALADE ESV 2021 CHEVROLET SUBURBAN 2021 CHEVROLET TAHOE 2021 GMC YUKON 2021 GMC YUKON XL … Read more

Malfunction Indicator Lamp Illuminated On Driver Information Center (DIC) with DTC P0300 and/or P0299/P2227 Set – 2016-2020 Buick Envision

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2020 Buick Envision

NHTSA ID Number: 10192039 Manufacturer Communication Number: 21NA074   Summary This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.     5 Affected Products Vehicle MAKE MODEL YEAR BUICK ENVISION 2016-2020   Condition Some customers … Read more