Diagnostic Tips

Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing “D” on Driver Information Center (DIC) when Lightly or Moderately Accelerating, Forcing an 8-7 or 8-6 Downshift – 2019-2021 Cadillac Chevrolet GMC

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Chevrolet GMC Cadillac

NHTSA ID Number: 10219291 Manufacturer Communication Number: 21-NA-275 Summary This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing “D” on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 Downshift.   Condition Some customers may comment on the following … Read more

Information on Unable to Open Folding Top, DTC B19E1 sym64 Possibly Set – 2020-2023 Chevrolet Corvette

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2023 Chevrolet Corvette

NHTSA ID Number: 10219293 Manufacturer Communication Number: 22-NA-084 Summary This service bulletin provides information for dealers/technicians on on unable to open folding top, DTC B19E1 sym64 possibly set.   Condition Some customers may comment that the folding top will not open. Technicians may find DTC B19E1 sym64 set.   Cause The cause of the condition may be … Read more

DTC P0BBD Diagnosis and Repair – 2017-2022 Chevrolet Bolt

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2022 Chevrolet Bolt EV

NHTSA ID Number: 10224827 Manufacturer Communication Number: 22-NA-151 Summary This service bulletin provides diagnostic and repair information for instances when DTC P0BBD may set.   Condition Some customers may comment on a Malfunction Indicator Lamp (MIL) illuminated and the Driver Information Center (DIC) displays “Propulsion Power is Reduced” and the battery will not charge above 30% State … Read more

Information on Low Engine RPM with No Throttle Response – 2022 Chevrolet Silverado & GMC Sierra

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2022 Chevrolet Silverado 1500

NHTSA ID Number: 10224828 Manufacturer Communication Number: 22-NA-196 Summary This informational bulletin advises the technician that it’s possible that the wrong generator may have been installed if found recently replaced which can cause the customer’s concern.   Condition Some customers may comment that when starting the engine from the RUN power mode, the engine will idle at … Read more

DRL and/or Headlamp Operation Anomalies with Possible B108E – 2022-2023 Chevrolet Corvette

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2023 Chevrolet Corvette

NHTSA ID Number: 10224830 Manufacturer Communication Number: 22-NA-199 Summary This service bulletin provides repair information to correct a customer concern of DRL and/or Headlamp Operation Anomalies with Possible B108E   Condition Some customers may notice that the Daytime Running Lamps (DRL) may not automatically turn on in daylight conditions. They may comment instead that the headlamps are … Read more