TSB Document:

Affected Component: BACK OVER PREVENTION

Summary
Flash: Drivetrain Control Module (DTCM) Updates This bulletin involves reprogramming the DTCM with the latest available software. The customer may describe one or more of the following: Noise while disconnecting the 4WD at speeds around 56 kph (35 mph). A hum, chatter or growl noise heard intermittently at speeds approximately between 48-72 kph (30-45 mph). Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) is active or stored:C2502-64 - Status ECM Tcfailsts Or Transm2 Transmissionfailsts Or Brake8 Dstfailsts Or Brake8 Escfailsts Or Status ECM Emsfailsts Or Ge Electricsteeringfailsts - Signal Plausibility Failure. DTC C2502-64 may be active or stored in the DTCM due to other OBD DTC?s with the Transmission Control Module (TCM) or Powertrain Control Module (PCM). The DTC will not turn on a Malfunction Indicator Lamp (MIL) light.

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Date Published
JAN 15, 2022
NHTSA TSB #
10222982
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