2017 - 2023 GM 6.6L L5P Duramax | EDGE Products ONLY Transmission Tuning by PPEI

PPEI transmission calibration for GM 6.6L L5P Duramax, model years 2017-2023, equipped with Allison 6-speed T87A / 10-speed T93 (as equipped).

Designed to refine shift timing and torque-converter strategy for the listed application. Compatible flashing devices: EDGE Products CTS3 Insight+ only, or EDGE CTS3 upgraded to Insight+ flashing. OBD-II flash from driver's seat; no bench flash / pre-flashed TCM / core return..

Confirm the vehicle configuration and flashing requirements before ordering.