21-010-17

Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the TCM memory: P1DB8-00 - Unintended Torque Applied While In Neutral. U1424-00 - Implausible Engine Torque Signal Received.In addition to the above DTCs, this software release also includes: Improved transmission shifting during a limp mode.