U-Codes

Multiple U-code Diagnostic Information – With one having symptom Byte 71 – 2013-2019 Buick Cadillac Chevrolet GMC

by
2019 Chevrolet Corvette ZR1

NHTSA ID Number: 10163665 Manufacturer Communication Number: PIT5569A Summary This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.   270 Affected Products Vehicles MAKE MODEL YEAR BUICK CASCADA 2016-2018 BUICK ENCLAVE 2013-2018 BUICK ENCORE 2013-2018 BUICK ENVISION 2016-2018 BUICK LACROSSE 2013-2018 BUICK REGAL 2013-2018 BUICK VERANO 2013-2017 … Read more

Power Door Locks Cycle or Intermittently Inoperative – Loss of Data With Multiple U-Codes –Unwanted Seat or Memory Mirror Movement or Doesn’t Function –Intermittent No Crank/No Start or Reduced Power – 2017-2021 GMC Acadia & Cadillac XT5

by
2019 GMC Acadia

NHTSA ID Number: 10185718 Manufacturer Communication Number: PIT5606J   Summary This Preliminary information communicates an Intermittent No Crank, No Start, or Reduced Power loss of data multiple U codes or Intermittent Power Door Locks inoperative, unwanted seat or mirror movement.  Inspect harness for chaffed by the I-shaft at the base of the steering column. If chaffed, repair damaged wires … Read more