Diagnostic Tips

IPC Gauges Inoperative, Numerous DIC Error Messages, No Brake or Electric Power Steering Assist, Transmission in Default Gear, No Reverse and/or Back Up Lights, No DRL, No Cruise or Adaptive Cruise and/or No Trailer Brake Lights – 2018-2019 Cadillac Chevrolet GMC

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2019 Chevrolet Tahoe

NHTSA ID Number: 10178263 Manufacturer Communication Number: 20NA055   Summary This technical bulletin provides a procedure to program the ECM to correct the customers concern.   13 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2019 CADILLAC ESCALADE ESV 2019 CHEVROLET EXPRESS 2020 CHEVROLET SILVERADO 1500 2019 CHEVROLET SILVERADO 2500 2019 CHEVROLET SILVERADO 4500HD 2019 CHEVROLET SUBURBAN … Read more

Service Engine Soon Lamp Illuminated and/or Service Power Brake Assist Message Displayed, with DTCs P0557 or P0558 Stored – 2017-2020 Buick Cadillac Chevrolet GMC Holden

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2020 Cadillac XT6

NHTSA ID Number: 10178266 Manufacturer Communication Number: 20NA071   Summary This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored.   17 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCLAVE 2018-2020 CADILLAC XT5 2017-2020 CADILLAC XT6 … Read more

Engine Control Module Calibration for T1 L3B Engine with DTC P26BB Set – 2019-2020 Chevrolet SIlverado & GMC Sierra 1500

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2021 Chevrolet Silverado 1500

NHTSA ID Number: 10178268 Manufacturer Communication Number: 20NA100   Summary This informational bulletin provides information for dealers/technicians on Engine Control Module Calibration for T1 L3B Engine with DTC P26BB Set.   4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 1500 2019-2020 GMC SIERRA 1500 2019-2020     SEOCONTENT-START Copyright 2020 General Motors LLC. All Rights Reserved. … Read more

360 Camera Views go Blank with Tailgate Removed – 2020-2021 Chevrolet Silverado & GMC Sierra

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2020 Chevrolet Silverado

NHTSA ID Number: 10187756 Manufacturer Communication Number: 20NA105   Summary This technical bulletin provides repair information to correct a customer concern of 360 Camera Views go Blank with Tailgate Removed.     8 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 2020-2021 CHEVROLET SILVERADO 3500 2020-2021 GMC SIERRA 2500 2020-2021 GMC SIERRA 3500 2020-2021   Condition … Read more

Intermittent Parasitic Battery Draw Below 40 Degrees F / Dead Battery / Slow Crank – 2018-2020 Buick Cadillac Chevrolet GMC

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2020 Chevrolet Camaro

NHTSA ID Number: 10178303 Manufacturer Communication Number: PIT5745   Summary This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.   72 Affected Products Vehicles MAKE MODEL YEAR BUICK ENVISION 2018-2020 BUICK LACROSSE 2018-2019 CADILLAC ATS 2018-2019 CADILLAC CT6 2018-2020 CADILLAC CTS 2018-2019 … Read more