NHTSA ID Number: 10130547 Manufacturer Communication Number: GCUS-3-804   Summary 28770 – SUB A “Service 4WD” message may be displayed on the Driver Information Center and DTC C0398 may be set. Concurrently, the vehicle is permanently locked in 4HI and cannot be shifted shift out of it while the code is present. If the code is cleared, ... Read more

The post Service Update 28770 4WD IPS Drift DTC C0398 – 4HI Lock-Up – 2015-2016 Cadillac Chevrolet GMC first appeard on GM - OEMDTC and is written by oemdtc

NHTSA ID Number: 10113854 Manufacturer Communication Number: PIP5369B   Summary This Preliminary Information communication provides information to the technician about vehicles that have “Service 4 Wheel Drive” message on the Driver Information Center. Provides the technician with additional information to ensure that the TCCM contains the latest software released to address previous issues, also advises of default ... Read more

The post Service 4WD Message C0398 – 2014-2016 Cadillac Chevrolet & GMC first appeard on GM - OEMDTC and is written by oemdtc

NHTSA ID Number: 10114928 Manufacturer Communication Number: PIP4101B   Summary This Preliminary Information communication provides information to the technician about vehicles that have a Service 4WD light on and the system inoperative. Technician may find Diagnostic Trouble Code B2725 set. Technician will need to replace the transfer case dash switch.   15 Affected Products Vehicles CHEVROLET AVALANCHE ... Read more

The post Service 4WD Message DTC B2725 – 2007-2008 Chevrolet & GMC first appeard on GM - OEMDTC and is written by oemdtc

NHTSA ID Number: 10144458 Manufacturer Communication Number: PIP5304B Summary This Preliminary Information communication provides information to the technician about vehicles that have a “Service 4WD Message” displayed in the Driver Information Center. Technician may find Diagnostic Trouble Codes C0392 or C0396. Technician should check the terminal tension on the Transfer Case Control Module X1 connector. Technician should ... Read more

The post Service 4wd Message With DTC C0392 or C0396 Stored In TCCM – 2014-2018 Chevrolet GMC Cadillac first appeard on GM - OEMDTC and is written by oemdtc