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Higher Than Expected Oil Consumption at 8600 GVW and Above – 2000-2022 Chevrolet GMC HUMMER

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2019 Chevrolet Silverado

NHTSA ID Number: 10219277 Manufacturer Communication Number: 03-06-01-023F Summary This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.   Information on Engine Oil Consumption Guidelines All engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons and piston rings. … Read more

Information on Diesel Exhaust Fluid (DEF) – 2011-2021 Chevrolet & GMC

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2018 Chevrolet Silverado

NHTSA ID Number: 10183127 Manufacturer Communication Number: 16NA244   Summary This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.   SEOCONTENT-START Service Bulletin Bulletin No.: 16-NA-244 Date: November, 2020 INFORMATION Subject: Information on Diesel Exhaust Fluid (DEF) Brand: Model: Model Year: VIN: Engine: Transmission: from to from to … Read more

Diagnostic Tip – Diesel Exhaust Fluid System Contamination – 2010-2023 Chevrolet & GMC

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Chevrolet GMC Cadillac

NHTSA ID Number: 10222781 Manufacturer Communication Number: 19-NA-237 Summary This informational bulletin explains how to identify possible DEF contamination.   Condition Some customers may comment on one or more of the following conditions: Exhaust fluid quality poor message on the Driver Information Center (DIC). Diesel exhaust fluid warning lamp on. Other exhaust fluid quality related concerns.   … Read more

Radio Inoperative with No Communication and DTC U0184 – 2014-2016 Buick Cadillac Chevrolet GMC

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2016 Chevrolet Camaro

NHTSA ID Number: 10083893 Manufacturer Communication Number: PIT5401F Summary THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF THE RADIO IS INOPERTIVE. NEW SOFTWARE HAS BEEN RELEASED TO CORRECT THIS CONCERN.   52 Affected Products Vehicles MAKE MODEL YEAR BUICK LACROSSE 2014-2016 BUICK REGAL 2014-2016 CADILLAC ATS 2013-2016 CADILLAC … Read more

Various Engine Noises During Cold Start and Warm Engine Operation – 2014-2020 Cadillac Chevrolet GMC

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2019 Chevrolet Silverado

NHTSA ID Number: 10174305 Manufacturer Communication Number: 140604004F   Summary This informational bulletin explains the normal noises an engine may make when the ambient temperature outside is cold or the vehicle has sat for a few hours.   91 Affected Products Vehicles MAKE MODEL YEAR CADILLAC CTS 2016, 2018-2019 CADILLAC ESCALADE 2015-2020 CADILLAC ESCALADE ESV 2015-2020 CHEVROLET … Read more