21-020-20 REV. A

Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P1614 - ECU Reset-Recovery Occurred. Customers may also experience the following: An audible clunk after applying throttle from a coasting condition, predominantly in fifth and sixth gear while driving 48-72 kph (30-45 mph).