Flash: 8HP70 SRT 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 conditions.
? Less than desired gear shifts when driving on steep grades in lower altitudes.
? Less than desired gear shifts during aggressive, high speed driving.
? Erratic 1-2 upshift in cold ambient temperatures.
? Delayed engagement shifting from reverse to drive.
? Harsh or inconsistent upshift that happens intermittently.
? Harsh or inconsistent downshift that happens intermittently while coasting or during
passing maneuvers.
? Intermittent delayed shift from 6th gear during aggressive high speed driving.
