2016

Poor Engine Performance in Extremely Cold Weather Conditions, PCV Bypass Hose and Charge Air Cooler Icing for LUV Engines, Malfunction Indicator Lamp (MIL) Illuminated – DTC P0299, P0234, P2227, P00C7 Set – 2013-2021 Buick Encore & Chevrolet Trax

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Chevrolet Buick

NHTSA ID Number: 10222825 Manufacturer Communication Number: 16-NA-405 Summary This service bulletin provides a procedure to install a PCV heater or a charge air cooler to correct the turbo charger system from freezing causing cold weather performance issues.   Condition Some customers may comment that when driving in extremely cold weather conditions (-18°C or less / 0°F … Read more

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

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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

Malfunction Indicator Lamp (MIL) Illuminated – DTC P219A and/or P219B Set – 2016-2022 Buick Cadillac Chevrolet GMC Holden

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General Motors

NHTSA ID Number: 10222837 Manufacturer Communication Number: 22-NA-193 Summary This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.   Condition Some customers may comment that the MIL is illuminated. Some technicians may find one or more of the following codes set in the … Read more

AC Blows Warm or Poor Performance – 2020-2021 GM

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General Motors

NHTSA ID Number: 10216361 Manufacturer Communication Number: PIT5099F Summary This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.   Condition / Concern Customer may comment that … Read more

2015-2022 Cadillac Chevrolet GMC

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Chevrolet GMC Cadillac

NHTSA ID Number: 10222670 Manufacturer Communication Number: 22-NA-184 Summary This informational bulletin advises the technician of possibly installing the incorrect 1-2-7-8-R clutch fluid passage seal and which seal should be used with measurements of the seal.   Condition Technician’s may find a no movement condition after replacement of the valve body on the 8L45 or 8L90 automatic … Read more