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Best Replacement TCM For Your 2009-2015 Duramax

2500 and 3500 HD Silverado/Sierra's equipped with the 6.6L Duramax routinely have factory TCM issues that cause limp mode, loss of PRNDL display, and trigger check engine lights. The DuramaxTuner Pre-Tuned Replacement TCM is a brand new and upgraded TCM for your stock 2009 and 2010 Allison 1000 A50 Transmission Control Module. Your new TCM will arrive pre-programmed for your VIN and includes our custom TCM Tuning. Benefits of TCM tuning over stock include: • Refined shift schedule to take advantage of the wide Duramax Torque curve • Improved torque converter clutch engagement settings to allow lockup under heavy loads, planting the power to the ground and lower trans temps • Torque limitations adjusted to allow high RPM fueling in performance applications • 2nd gear start in 4wd low range (can tap down to first) • Further adjustments available for customers with larger than stock turbochargers or significantly oversized tires TCM Tuning is especially important for trucks with: Larger tires (35”+) Modified turbo(s) Built transmission Any modification that impacts operating RPMs Towing Keep your truck in its power-band when lugging up a grade Performance