Vibration During Active Fuel Management V4 Mode Operation 1200 – 1400 Engine RPM – 2014-2015 Chevrolet Silverado & GMC Sierra

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2015 Chevrolet Silverado

NHTSA ID Number: 10115000 Manufacturer Communication Number: PIP5228B   Summary This Preliminary Information communication provides information to the technician about vehicles that have a vibration that is felt between 1200 ? 1400 engine revolutions per minute when in active fuel management V4 mode. Technician will need to use J?38792-A Electronic Vibration Analyzer 2 or CH?51450-NVH Pico Oscilloscope … Read more

Information on Vibration Analysis and Diagnostic – 2014-2019 Chevrolet Silverado & GMC Sierra

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2018 Chevrolet Silverado

NHTSA ID Number: 10154650 Manufacturer Communication Number: PI1354I   Summary This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur in either the seat or steering wheel on full size pickups at speeds of 56-72 km/h (35-45 mph) or 96-120 km/h (60-70 mph), vibrations caused by wheel and tire, axle components and/or propeller shafts and how to … Read more

OnStar XM GPS or Antenna Malfunction – May Set DTC B2462 B2470 Or B125C – Water Leak In Headliner Or Overhead Console – 2015 Cadillac Chevrolet GMC

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2015 Chevrolet Silverado

NHTSA ID Number: 10115066 Manufacturer Communication Number: PIT5362B   Summary This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles with visible water leak or signs of water intrusion from the antenna base, red OnStar LED, unable to connect to OnStar, OnStar unable to locate the vehicle, OnStar has inaccurate global … Read more

No GPS Signal Displayed or Navigation System Does Not Recognize Location of Vehicle – 2015 Chevrolet Corvette

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2015 Chevrolet Corvette

NHTSA ID Number: 10113552 Manufacturer Communication Number: PI1380A   Summary This preliminary informational bulletin provides repair information to correct a customer concern of no GPS signal displayed or navigation system does not recognize location of vehicle. This preliminary informational bulletin provides a procedure to reprogram the VPDR, install aluminum foil tape around the camera cable and reposition … Read more

Inoperative Sub-Woofer – 2010-2015 Chevrolet Equinox & GMC Terrain

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2015 Chevrolet Equinox

NHTSA ID Number: 10070569 Manufacturer Communication Number: PIT4915D Summary Customers complain that their subwoofer is inoperative. Models with a 4 cylinder engine are equipped with an Active Noise Cancellation (ANC) system. ANC system works with the vehicle’s audio system to cancel out torque converter clutch (TCC) noise.     Condition/Concern Some customers with a 2.4L engine and … Read more