Diagnostic Tips

Left Trailer Turn Signal Flashes Once And Stops (Without V92) – 2018-2020 Chevrolet Equinox & GMC Terrain

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2020 Chevrolet Equinox

NHTSA ID Number: 10178304 Manufacturer Communication Number: PIT5748   Summary This preliminary information makes the technician aware of a trailer lighting concern if the incorrect harness is used to wire trailer.   6 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET EQUINOX 2018-2020 GMC TERRAIN 2018-2020   Parts Information Description Part Number Quantity Trailer Wiring Harness 84215177 1 … Read more

Adaptive Cruise Control/ Lane Keep Assist Unavailable – 2016-2020 Buick Cadillac Chevrolet

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2020 Buick LaCrosse

NHTSA ID Number: 10201305 Manufacturer Communication Number: PIC6265F   Summary This Preliminary information communicates that a vehicle may exhibit a Adaptive Cruise Control Unavailable and/or Lane Keep Assist Unavailable message. The technician may attempt to program the Active Safety Control Module (ASCM) and encounter a code E4399. The technician is advised if he encounters this concern to zero … Read more

SES Lamp ON With DTC P0324 – Engine Squeak Or Belt Noise – 2016-2020 Buick Cadillac Chevrolet GMC

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2020 Chevrolet Blazer

NHTSA ID Number: 10178363 Manufacturer Communication Number: PIP5545C   Summary This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair.   41 Affected Products Vehicles MAKE MODEL YEAR BUICK LACROSSE 2017-2019 BUICK REGAL 2018-2020 CADILLAC ATS 2016-2019 CADILLAC CT6 2016-2020 CADILLAC CTS 2016-2019 CADILLAC XT5 2017-2020 CADILLAC … Read more

Diagnostic Tips For Direct Injected Engines Hard Start Cold – 2008-2020 Buick Cadillac Chevrolet GMC Saturn

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2020 Chevrolet Camaro

NHTSA ID Number: 10178389 Manufacturer Communication Number: PIP5180C   Summary This Preliminary Information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark test, and a compression test. Technician should also install a vacuum gauge prior … Read more

Service Safety Restraints System With DTC B14DC – 2021 Chevrolet Tahoe & GMC Yukon

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2021 GMC Yukon

NHTSA ID Number: 10185715 Manufacturer Communication Number: PIT5759J   Summary This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting caused by high resistance at the F106DA Driver’s front seat inboard air bag connector.  Dealers are to replace the F106DA Driver’s front seat inboard air bag connector pigtail.   4 Affected Products Vehicles MAKE … Read more