C0398

Instrument Panel Cluster (IPC) Warning Lamps And / Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing) – 2016-2021 Chevrolet Colorado & GMC Canyon

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2018 Chevrolet Colorado

NHTSA ID Number: 10184101 Manufacturer Communication Number: PIP5416D   Summary This Preliminary Information communicates to the technician the potential areas of concern in which the engine wiring harness may chafe. It describes in detail what to look for. If you encounter any of these specific described chafes, inspect, repair (as necessary) and route the wiring harness away from … Read more

Faint High Pitched Whine Noise In Auto 4 Wheel Drive – 2014-2017 Chevrolet GMC Cadillac

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2017 Chevrolet Silverado

NHTSA ID Number: 10096054 Manufacturer Communication Number: PIP5261A Summary THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A HIGH PITCHED WHINE NOISE FROM THE VEHICLE NOTICED WHEN DRIVING IN AUTO 4WD. WHEN THE TRANSFER CASE CONTROL MODULE HAS TO MOVE THE TRANSFER CASE ACTUATOR MOTOR THE HIGHER CURRENT PASSING THROUGH THE … Read more

Service Update 28770 4WD IPS Drift DTC C0398 – 4HI Lock-Up – 2015-2016 Cadillac Chevrolet GMC

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2016 Chevrolet Suburban

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

Service 4WD Message C0398 – 2014-2016 Cadillac Chevrolet & GMC

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2016 Chevrolet Silverado

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