EFILive is pleased to deliver T87 8 speed 8L90 gas transmission tuning. This initial release covers Gas applications including the 2015 Chevrolet Corvette, 2015 Cadillac Escalade, and HD Silverado and Sierra trucks. A full list of supported vehicles can be found on our GM Transmission Supported Vehicles web page.

2015.5+ Duramax applications also use the T87 TCM, however it is currently unsupported given the software component used in this application is significantly different to the T87 Gas TCM.

T87 Transmission tuning is a free software update for all EFILive customers. To access these features, customers must update their V8 and V7 software, along with their FlashScan V2/AutoCal firmware to our July 28, 2015 Public Pre-Release software software (or later).

This release delivers our second phase of planned gas calibration enhancements. The next phase of our planned GM Gas ECM and TCM development has now commenced.