Brake Pedal Moves Or Self Applies At Full Turns – 1998-2023 Cadillac Chevrolet GMC Hummer

General Motors

NHTSA ID Number: 10226382 Manufacturer Communication Number: PIT3665L Summary This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.   Condition / Concern On vehicles with a Hydro-Boost System, customers may notice during full … 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

Reduced Air Flow From HVAC Vents And DTC B3933 – 2007-2009 Cadillac Chevrolet GMC Hummer

2009 Cadillac Escalade

NHTSA ID Number: 10125955 Manufacturer Communication Number: PIT5297   Summary This Preliminary Information communication provides information to the technician about vehicles that may have reduced air flow from the Heater-Vent-Air Conditioning dash vents. Technician may find B3933 sym 05 set in the Heater-Vent-Air Conditioning control head. Technician will need to reprogram the Heater-Vent-Air Conditioning control head using … Read more

Low Oil Pump Pressure Due To Sticking Oil Pressure Relief Valve – 2007-2018 Buick Cadillac Chevrolet Hummer Pontiac Saab

2018 Chevrolet Corvette

NHTSA ID Number: 10164752 Manufacturer Communication Number: PIP4158H Summary This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.   159 Affected Products Vehicles MAKE MODEL YEAR BUICK ALLURE 2008-2009 BUICK LACROSSE … Read more