Flash: 854RE Transmission Shift Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the
latest available software.
A small number of customer may experience one or more of the following.
? Malfunction Indicator Lamp (MIL) illumination with Diagnostic Trouble Code (DTC)
P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory.
? Bump sensation felt during engine start/stop transition on light throttle acceleration
(Engine Stop Start (ESS) equipped vehicles only).
? Less than desired overall downshifts during normal driving.
? Less than desired downshifts during passing maneuvers.
? Less than desired upshift quality in lower gears.
