Diagnostic Tips

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 BUICK LACROSSE 2014-2016 BUICK REGAL 2014-2016 CADILLAC ATS 2013-2016 CADILLAC CTS 2013-2016 CADILLAC … Read more

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

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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

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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 BUICK ALLURE 2008-2009 BUICK LACROSSE 2008-2009 CADILLAC CTS-V … Read more

Vehicle Power Modes or Starts by Itself When Key is Put in the Ignition or Left in the Ignition in the Off Position – 2012-2015 Buick & Chevrolet

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2015 Chevrolet Cruze

NHTSA ID Number: 10114279 Manufacturer Communication Number: PI1329 Summary This preliminary bulletin provides a procedure to replace the ignition cylinder if found that it has excessive wear which can cause the vehicle to power up or start when the key is put in the ignition with out turning it.   14 Affected Products Vehicles BUICK ENCORE 2013-2015 … Read more

Lock Indicator Flickers And Unable To Clear DTC B2625 After Repairs Are Completed – 2013-2019 Cadillac ATS

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2013 Cadillac ATS

NHTSA ID Number: 10160995 Manufacturer Communication Number: PIC5733C Summary This Preliminary Information communication provides information to the technician about vehicles with a Diagnostic Trouble Code B2625 Symptom Code 02. Technician should not replace the Body Control Module for this concern. Technician should disconnect the battery negative terminal for 30 seconds. Technician can now reconnect the battery. The … Read more