Silverado

Diagnostic Tip – Diesel Exhaust Fluid System Contamination – 2010-2023 Chevrolet & GMC

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Chevrolet GMC Cadillac

NHTSA ID Number: 10222781 Manufacturer Communication Number: 19-NA-237 Summary This informational bulletin explains how to identify possible DEF contamination.   Condition Some customers may comment on one or more of the following conditions: Exhaust fluid quality poor message on the Driver Information Center (DIC). Diesel exhaust fluid warning lamp on. Other exhaust fluid quality related concerns.   … Read more

Rear View Camera System Calibration – 2017 Chevrolet Silverado & GMC Sierra

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2017 Chevrolet Silverado

NHTSA ID Number: 10113384 Manufacturer Communication Number: GCUS-3-850   Summary 17065 – Service Update. When certain vehicles, equipped with base body or chassis (RPO ZW9) and without rear vision camera ready (RPO 5F9) are shifted into reverse, the installed calibration is looking for a camera input that was not part of the requested truck build and “Service … 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

Engine Stays Running After Ignition Key Turned Off – 2014-2015 Chevrolet & GMC

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2015 Chevrolet Silverado

NHTSA ID Number: 10112253 Manufacturer Communication Number: PIT5327 Summary This Preliminary Information communication provides information to the technician about vehicles that continue to running after the engine is shut off. Technician should check for fuses installed into F26UA and F31UA. If fuses are found in any of the two locations the fuses must be removed.   Condition/Concern … Read more

Whistle Noise From Inside Vehicle – 2014-2019 Cadillac, Chevrolet & GMC

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2019 Chevrolet Suburban

NHTSA ID Number: 10151830 Manufacturer Communication Number: PIT5272B Summary This Preliminary Information communication provides information to the technician about vehicles that may have a whistle noise in the vehicle from the driver or passenger side. Technician will need to inspect for voids in the body sealer on the left or right side A-pillar. Technician should also inspect … Read more