Program ECM Error E4491/E4423 – 2016-2019 All GM Passenger Cars and Light Duty Trucks

2017 Chevrolet Camaro

NHTSA ID Number: 10143429 Manufacturer Communication Number: PIP5373B Summary This Preliminary Information communication provides the technician with steps on how to program an Engine Control Module when getting a Service Programming System error code E4491 or E4423. In some cases Techline Customer Support Center may need to be contacted to resolve the issue.   144 Affected Products … Read more

OnStar Vehicles with B101D and Symptom Codes – 2011-2017 All GM Passenger Car and Light Duty Trucks

General Motors

NHTSA ID Number: 10157041 Manufacturer Communication Number: PIT5236K Summary This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will use Global Diagnostic System 2 to review the Firmware Over-the-Air version. If the Firmware Over-the-Air version on the scan tool equals … Read more

Rear and Side Tempered Glass Spots (Quench Marks) – GM Passenger Cars and Trucks

2017 Chevy Volt

NHTSA ID Number: 10184504 Manufacturer Communication Number: PI0754D   Summary This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.   SEOCONTENT-START Bulletin No.: PI0754D Date: Nov-2020 Subject: Rear and Side Tempered Glass Spots (Quench Marks) Models: 2021 and Prior GM Passenger Cars and Trucks Attention: This … Read more

Fuel and Oil Additives – Facts and Myths – Maximizing Gasoline Fuel Economy – GM Passenger Cars and Trucks

General Motors

NHTSA ID Number: 10222765 Manufacturer Communication Number: 05-00-89-072F Summary This service bulletin provides the technician with additional information on fuels, fuel additives and fuel management.   Sustainable energy use meets our present energy needs without compromising the ability of future generations to meet theirs. Almost all of the cars and trucks we drive run on fuels derived … Read more

Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information – GM Passenger Cars and Trucks

General Motors

NHTSA ID Number: 10224831 Manufacturer Communication Number: 99-00-89-019X Summary This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.   512 Affected Products Vehicles MAKE MODEL YEAR BRIGHTDROP EV600 2022 BRIGHTDROP ZEVO 600 2023 BUICK CASCADA 2016-2019 BUICK ENCLAVE 2015-2023 BUICK ENCORE 2015-2022 BUICK ENCORE GX 2020-2022 BUICK … Read more