Diagnostic Tips

Intermittent or Inoperable Rearview Camera, May Display Blue or Black Screen With Error Message – 2019-2022 Chevrolet GMC Holden

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2022 Chevrolet Equinox

NHTSA ID Number: 10220315 Manufacturer Communication Number: 22-NA-177 Summary This informational bulletin provides information for dealers/technicians on Intermittent or Inoperable Rearview Camera, May Display Blue or Black Screen With Error Message.   Condition Some customers may comment on their rearview camera acting intermittently or inoperable and may display a blue or black screen with an error message. … Read more

Unwanted Voice Recognition Activation – 2021-2022 GMC Acadia

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2022 GMC Acadia

NHTSA ID Number: 10220318 Manufacturer Communication Number: 22-NA-180 Summary This technical bulletin provides repair information to correct a customer concern of Unwanted Voice Recognition Activation.   Condition Some customers may comment that while driving voice recognition will activate an unwanted “what would you like?” message.   Cause The cause of the condition may be a software anomaly … Read more

TCCM Drivability DTCs and Possible Low Battery Charge – 2019-2023 Chevrolet Silverado 4500 HD, 5500HD, 6500HD

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2023 Chevrolet Silverado 6500HD

NHTSA ID Number: 10224305 Manufacturer Communication Number: PIP5853B Summary This PI communicates to dealers and technicians a possible diode issue in the TCCM, and how to properly diagnose for a diode issue.   Condition The vehicle may have a concern with the TCCM. causing DTC to set (see below) and possible a discharged battery. DTCs setting in … Read more

Incorrect GPS Location On Radio Display – 2023 Cadillac Lyriq

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2023 Cadillac LYRIQ

NHTSA ID Number: 10224308 Manufacturer Communication Number: PIC6477 Summary This Preliminary information communicates an engineering investigation for incorrect location when using GPS navigation.   Condition Customer may comment that the display screen will report an incorrect location when using GPS navigation.   Cause This is due to a software anomaly in the Telematics Communication Interface Control Module. … Read more

Service Engine Soon Illuminated in Driver Information Center (DIC) and/or a Malfunctioning Fuel Gauge, DTC U0076/U18A2/P1001/P1434 or Other Message Counter Incorrect Codes Set – 2020-2022 Chevrolet Malibu

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2022 Chevrolet Malibu

NHTSA ID Number: 10219289 Manufacturer Communication Number: 21-NA-186 Summary This service bulletin provides repair information to correct a customer concern of Service Engine Soon Illuminated in DIC and/or a Malfunctioning Fuel Gauge with DTC U0076/U18A2/P1001/P1434 or Other Message Counter Incorrect Codes Set.   Condition Some customers may comment on a Service Engine Soon (SES) light and/or a … Read more