Diagnostic Tips

Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH – 2015-2016 Cadillac Chevrolet GMC

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2016 Cadillac Escalade

NHTSA ID Number: 10125137 Manufacturer Communication Number: PIP5337J   Summary This Preliminary Information communication provides information to the technician on the step to diagnose and repair the vehicles that may have a shake or shudder during light throttle acceleration, between 30 and 65 miles per hour steady state driving. Also shudder feeling that may be described as … Read more

Water Rush Or Gurgle Noise From Heater Core – 2015-2019 Chevrolet Colorado & GMC Canyon

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2019 Chevrolet Colorado

NHTSA ID Number: 10151831 Manufacturer Communication Number: PIT5420F Summary This Preliminary Information communicates information to the technician about vehicles that may have a water rush or gurgle type noise from the center dash area. Engineering is aware of the concern and it is under investigation. Inspect the system for coolant leaks and proper coolant level. No other repairs are to … Read more

Radio Display May Momentarily Flicker When Vehicle Is First Started – 2015-2016 Chevrolet & GMC

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2016 Chevrolet Silverado

NHTSA ID Number: 10115021 Manufacturer Communication Number: PIT5378B Summary This Preliminary Information communication provides information to the technician about vehicles that may have a radio display that flickers at first start up. Engineering is currently evaluating this concern.   7 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 2015 CHEVROLET SUBURBAN 2015 CHEVROLET TAHOE 2015 GMC … Read more

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

Oil Leak From Left Side Of Engine – 2015-2016 Buick Chevrolet GMC

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2016 Chevrolet Colorado

NHTSA ID Number: 10083859 Manufacturer Communication Number: PIP5392 Summary THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF AN OIL LEAK IN THE OIL FILTER AREA.   10 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCLAVE 2015-2016 CHEVROLET COLORADO 2015-2016 CHEVROLET TRAVERSE 2015-2016 GMC ACADIA 2015-2016 GMC CANYON 2015-2016 … Read more