Diagnostic Tip for DTCs Set at a Low Mileage for 9T45/50/60 Automatic Transmissions – 2020-2022 Buick Cadillac Chevrolet GMC Holden

2021 Cadillac XT6

NHTSA ID Number: 10205554 Manufacturer Communication Number: 21NA169   Summary This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.     31 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCORE GX 2020-2022 BUICK ENVISION 2020-2022 … Read more

Poor Engine Performance in Extremely Cold Weather Conditions for LSY Engines, Charge Air Cooler Icing, Malfunction Indicator Lamp (MIL) Illuminated – 2019-2021 Cadillac XT4

2021 Cadillac XT4

NHTSA ID Number: 10205561 Manufacturer Communication Number: 21NA229   Summary This service bulletin provides a procedure to install a winter grille cover to correct the customer concerns of Poor Engine Performance in Extremely Cold Weather Conditions, Charge Air Cooler Icing, Malfunction Indicator Lamp (MIL) Illuminated.     3 Affected Products Vehicle MAKE MODEL YEAR CADILLAC XT4 2019-2021 … Read more

Charge Air Cooler Icing During Extreme Cold Weather Conditions – 2019-2022 Cadillac XT4

2022 Cadillac XT4

NHTSA ID Number: 10205562 Manufacturer Communication Number: 21NA233 Summary This service bulletin advises the technician to order a winter grille cover if not found in vehicle or to install the cover one time. 4 Affected Products Vehicle MAKE MODEL YEAR CADILLAC XT4 2019-2022   Information The purpose of this bulletin is to: Verify that in extreme cold … Read more

Radio Software Version V808 USB Update – 2019-2020 Cadillac Chevrolet GMC Holden

2020 Cadillac CT6

NHTSA ID Number: 10205543 Manufacturer Communication Number: 20NA171   Summary This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.     18 Affected Products Vehicles MAKE MODEL YEAR CADILLAC CT6 2019-2020 CADILLAC XT4 2019 CHEVROLET BLAZER 2019 CHEVROLET CAMARO 2019 CHEVROLET COLORADO 2019-2020 CHEVROLET EQUINOX 2019-2020 CHEVROLET … Read more

Information on Accessory All-Weather Floor Liners and Flat Mats Warped or Misshapen – 2021 and Prior GM Passenger Cars and Light Duty Trucks

2021 Chevrolet Camaro

NHTSA ID Number: 10188401 Manufacturer Communication Number: 21NA026   Summary This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.     429 Affected Products Vehicles MAKE MODEL YEAR BUICK CASCADA 2016-2019 BUICK ENCLAVE 2012-2021 BUICK ENCORE 2013-2021 BUICK ENCORE GX 2020-2021 BUICK ENVISION 2016-2021 BUICK LACROSSE 2012-2019 BUICK … Read more