Odometer Displays Zero or Incorrect Mileage After Programming DTCs U1973 U197E U197F U2A90 U2A91 U1978 and/or U197F – 2020-2022 Buick Cadillac Chevrolet GMC

Chevrolet Buick GMC Cadillac

NHTSA ID Number: 10202388 Manufacturer Communication Number: PIT5851 Summary This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.   Condition Some dealerships may comment that after a module is replaced and programmed, the odometer may display zero miles or the incorrect mileage. This … Read more

Wipers Only Operate On One Speed – 2021 Buick Envision

2021 Buick Envision

NHTSA ID Number: 10202394 Manufacturer Communication Number: PIT5852 Summary This Preliminary information communicates a condition where the wipers will be stuck on one speed.   Condition Wipers only operate on one speed and unable to change wiper speeds   Cause Logic locked   Correction: Place wiper stalk switch to the off position. Disconnect the battery and wait … Read more

History DTCs To Ignore / NO SES / NO Malfunction Indicator Lamps / NO Warning Messages – 2021 Buick Envision

2021 Buick Envision

NHTSA ID Number: 10193468 Manufacturer Communication Number: PIT5837   Summary This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.     1 Affected Product Vehicle MAKE MODEL YEAR BUICK ENVISION 2021   Condition A technician may find any number of the following DTCs set in History. These history … Read more

No Start Or Unable To Perform Theft Relearn After Replacing Or Programming A Module / DTC U1962 – 2020-2021 Buick Cadillac Chevrolet GMC

2021 Chevrolet Corvette

NHTSA ID Number: 10193434 Manufacturer Communication Number: PIT5832   Summary This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.     11 Affected Products Vehicles MAKE MODEL YEAR BUICK ENVISION 2021 CADILLAC CT4 2020-2021 CADILLAC CT5 2020-2021 CADILLAC ESCALADE ESV 2021 CHEVROLET CORVETTERead more

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

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