Flash: 8HP70 Transmission Shift Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.
The purpose of this software release is to enable the capability to capture non Diagnostic Trouble Code (DTC) control module data through the Uconnect Data Recording system.
In addition, the following improvements are available.
2015 WK
? Improved upshift timing in eco, base, and hill modes and while using cruise.
? Improved 8-7, 3-2, and 2-1 downshift timing.
? Improved shift timing at higher altitudes.
? Improved torque converter engagement.
2015 DS
? Improved 7th gear upshift timing.
