N222379820 Essential Operating and Safety Info Manual Not Installed – 2023 Chevrolet & GMC

Chevrolet & GMC

NHTSA ID Number: 10222803 Manufacturer Communication Number: N222379820 Summary Customer Satisfaction Program – Certain vehicles may have the Essential Operating and Safety Info Manual missing from the vehicle. Dealers are to place the Essential Operating and Safety Info Manual into the vehicle’s glovebox. Because this manual can be easily placed in the glovebox by the customer, and … Read more

Malfunction Indicator Lamp (MIL) Illuminated – DTC P026A Set – 2017-2023 Chevrolet Silverado & GMC Sierra

2023 Chevrolet Silverado

NHTSA ID Number: 10222655 Manufacturer Communication Number: 18-NA-011 Summary Informational bulletin explaining how a plow may cause overheating and engine damage when traveling over 45 mph.   Condition Some customers may comment that the MIL is illuminated Some technicians may find DTC P026A set on vehicles with a snow plow installed.   Information Note: When a snow … Read more

Identify Engine Misfiring and/or Malfunction Indicator Lamp (MIL) Illuminated – DTC P0300 Setting – 2017-2023 Chevrolet Silverado & GMC Sierra

2023 Chevrolet Silverado

NHTSA ID Number: 10222659 Manufacturer Communication Number: 19-NA-187 Summary This bulletin provides additional information on how to graph a cylinder misfire and a possible diagnostic cause.   Condition Some customers may comment on one or more of the following conditions: MIL illuminated Engine misfire Some technicians may find DTC P0300 set in the Engine Control Module (ECM). … 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