LM2 Diesel with a Rear Main Oil Leak with or without DTC P06DD Set – 2020-2023 Cadillac Chevrolet GMC

Chevrolet GMC Cadillac

NHTSA ID Number: 10222664 Manufacturer Communication Number: 22-NA-022 Summary This Informational bulletin advises the technician of a possible oil leak at the front cover and how to diagnose it to verify if it is coming from the seal or not.   Condition Some customers may comment on a oil leak. The technician may find DTC P06DD set. … Read more

N222393410 Half Shaft Separation From Transmission – 2023 Cadillac XT5 & GMC Acadia

Cadillac GMC

February 2, 2023 NHTSA CAMPAIGN NUMBER: 23V043000 Half-Shaft May Separate from Transmission Separation between the half-shaft and transmission can result in a loss of drive power or vehicle rollaway when the vehicle is placed in park. Either of these scenarios can increase the risk of a crash.   NHTSA Campaign Number: 23V043 Manufacturer General Motors, LLC Components POWER TRAIN … Read more

Information on Excessive Diesel Exhaust Fluid (DEF) Usage – 2019-2023 Cadillac Chevrolet GMC

Chevrolet GMC Cadillac

NHTSA ID Number: 10222782 Manufacturer Communication Number: 20-NA-082 Summary This informational bulletin explains why more DEF is being used in diesel engines due to new emission standards.   Condition Some customers may comment that excessive DEF is being used. Some technicians may find no codes set or messages on the DIC.   Information The current 2020 Silverado/Sierra … Read more

Engine Coolant Reservoir Overfilled With Discolored Coolant Possible Engine Overheat Transmission Shake Shudder Vibration Shift Performance Or Slipping – 2021-2022 Cadillac Chevrolet GMC

Chevrolet GMC Cadillac

NHTSA ID Number: 10226385 Manufacturer Communication Number: PIP5845A Summary This Preliminary information communicates to the dealer technician that if the vehicle’s engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic Transmission Fluid Cooling Exchanger. The dealer should refer to bulletin 08-07-30-035 for the recommended components … Read more

Malfunction Indicator Lamp (MIL) Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set – 2000-2022 GM Passenger Cars and Trucks

Chevrolet Buick GMC Cadillac

NHTSA ID Number: 10219266 Manufacturer Communication Number: 20-NA-065 Summary This bulletin provides information on tools available to find an intake vacuum leak or exhaust leak to correct a condition of MIL Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set.   Condition Some customers may comment that the MIL is illuminated. Technicians may find one or … Read more