2017

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

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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

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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

False B127E Set In HMI Module – 2014-2017 Buick Cadillac GMC

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2017 Chevrolet Suburban

NHTSA ID Number: 10137737 Manufacturer Communication Number: PIT5301B Summary This Preliminary Information communication advises the technician that Diagnostic Trouble Code B127E in the Human Machine Interface with Regular Production Option Code U42 or UWG will be current when playing a DVD or Blu-Ray on the Integrated Center Stack display. When the disc is ejected the Diagnostic Trouble … Read more

Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114 – 2014-2020 Chevrolet GMC

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2016 Chevrolet Silverado

NHTSA ID Number: 10178359 Manufacturer Communication Number: PIT5311F   Summary This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent “Check Trailer Wiring” or “Service Trailer Brake” message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection … Read more

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

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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