Flash: 845RE Transmission Shift Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the
latest available software.
A small number of customers may experience one or more of the following concerns.
? Less than desired downshift timing (longer time to downshift than expected).
? Less than desired downshift feel during coasting decelerations and while passing.
? Less than desired shift feel when shifting from reverse to drive or drive to reverse
while the vehicle is stationary (i.e. garage shift).
? Less than desired upshift feel during normal non-aggressive driving.
? Less than desired powertrain performance at higher altitudes.
? Less than desired paddle shifter operation.
