21-010-16 REV. B

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · P061B-00 - Internal Control Module Torque Calculation Performance. · P072F-00 - Stuck In Gear 4. The following enhancements are included in the software update: · **7-8 gear increase shift at higher speed. · 8-9 gear shift will happen on a downhill only.** · Coast down bump on 7-6, 6-5, 5-4, 5-3 downshift improvements. · Cold 1-2, 2-3 upshift improvements. · 1-2, 2-3 upshift flare control improvements. · Power-on upshift improvements. · Lift Foot Upshift 2-3, 4-5, 8-9 improvements. · Improve transmission shift enhancements for sand and snow mode. · Vehicle performance enhancements.