21-019-16

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming of the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience an erroneous Malfunction Indicator Lamp (MIL) Illumination. Upon further investigation, the technician may find a Diagnostic Trouble Code (DTC) stored in the TCM memory. 3.6L Engine (Sales Code ERB) with 845RE Transmission (Sales Code DFL): · **Improved shift quality.** · P1DCD - TCM monitoring processor performance multiple clutches locked up. · P1B13 - Park-By-Wire unintended out of park position. · P0734 - Gear 4 Shift Incorrect Ratio. 3.6L Engine (Sales Code ERB) with 8HP45 Transmission (Sales Code DFG): · **Improved shift quality.** · Harsh 2-1 downshift or bump at low speeds. · P0734 - Gear 4 Shift Incorrect Ratio. 3.0L Engine (Sales Code EHD) with 845RE Transmission (Sales Code DFL): · **Improved shift quality.** · P1DCD - TCM monitoring processor performance multiple clutches locked up. · P1B13 - Park-By-Wire unintended out of park position.