TSB Document:

Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs)P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). Customer may also experience the following:An abnormal noise when the engine is in a cold condition. Irregular engine speed.

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Date Published
SEP 15, 2020
NHTSA TSB #
10181612
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