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

HVAC Mode Actuator Cam Gear Alignment is Incorrect After Replacement – 2002-2009 Buick Chevrolet GMC

Buick Chevrolet GMC

NHTSA ID Number: 10226383 Manufacturer Communication Number: PIT3033B Summary This Preliminary Information communication provides information to the technician that the Cam gear alignment can be incorrect after replacing the HVAC mode actuator.   Condition / Concern Cam gear alignment is incorrect after replacing the HVAC mode actuator.   Recommendations / Instructions Remove white cam gear and silver shaft … 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

Duramax Diesel Airflow Leak Equivalency Ratio Or Induction System Leak Indication And P0101 – 2007-2016 Chevrolet & GMC

2016 Chevrolet Silverado 3500

NHTSA ID Number: 10114998 Manufacturer Communication Number: PIP4932D Summary This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set. If during diagnosis the tech has found that … Read more

Clunking Noise from Front of Vehicle During Turns and/or Bumps – 2007-2018 Cadillac Chevrolet GMC

2018 Chevrolet Silverado

NHTSA ID Number: 10139092 Manufacturer Communication Number: 15NA082   Summary This technical bulletin provides repair information for installing a new stabilizer shaft bracket to correct a customer concern of on a clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps.     140 Affected Products Vehicles MAKE … Read more