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

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

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

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

Engine Compartment Whistle Noise or Chirp Noise – 2013-2015 Buick Cadillac Chevrolet

2015 Chevrolet Cruze

NHTSA ID Number: 10155077 Manufacturer Communication Number: PI1297C   Summary This preliminary informational bulletin provides diagnostic tips that may be helpful in correcting a customer concern about a whistle noise heard from the engine area after the vehicle has warmed up, or for up to 10 seconds after the engine is shut off.     Condition/Concern Whistle … Read more

Cooling System Contaminated With Engine Oil – 2010-2021 Buick Cadillac Chevrolet GMC

2020 Buick Enclave

NHTSA ID Number: 10198879 Manufacturer Communication Number: 21NA108   Summary This service bulletin provides diagnostic information for the technician regarding a customer concern of engine overheating, cooling system contaminated with engine oil.     Condition Engine is overheating. One or more of the following conditions: Oil in the coolant overflow reservoir Coolant discharging from the coolant reservoir … Read more