PPEI transmission calibration for GM 6.6L LB7 Duramax, model years 2001-2004, equipped with Allison 5-speed.
Designed to refine shift timing and torque-converter strategy for the listed application. Compatible flashing devices: EFILive AutoCal V2/V3; EFILive FlashScan V2/V3.
Confirm the vehicle configuration and flashing requirements before ordering.
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