How to relearn allison transmission. In the 'Special Functions' tab, it This is our 5th coach, 2nd diesel. procedure. Once the clutch data is learned, FastLearn translates it to the adaptive data cells, which the TCM uses for clutch control during range shifts. It has done this ever since we purchased it in Will a fully learned allison transmission shift better/smoother in WOT's as opposed to the allison in the learning process of your driving? Allison 1000 with triple disc converter and standard pan will take 21/22 qts of fluid. If the WRENCH ICON remains on or flashes, this indicates there is a service issue relating to clutch, filter or fluid life. Does anyone know if IOS Lite FORscan will let you reset adaptive transmission table, and PCM/TCM modules to factory settings? Or do you have to use a windows laptop? Thanks!! Hoping to get rid of The Best way to Relearn a Allison Transmission on a Duramax Truck Master 338K subscribers Subscribed In general, FastLearn is a procedure for Allison 1000 Series transmissions in which a series of tests are run to allow the transmission control module (TCM) to learn individual clutch characteristics. The WRENCH ICON will illuminate briefly after you turn the key to the run position on your Allison-equipped vehicle to indicate that prognostics are enabled. The Allison DOC works better at relearning the TCC TAPs. tool. It has done this ever since we purchased it in The allison is a smart transmission. what this means is that it learns how you drive to alter its shifting parameters outside of the factory settings. Furthermore, if the underlying problem persists after the reset and relearn, it indicates a more serious issue that requires professional diagnosis and repair. Or Allison DOC lap top program. This currently currently can can only only be be d done with a Tech II or equivalent scan scan tool. When to use a certified mechanic or transmission builder When basic fixes like a fluid change, a solenoid swap, or a relearn do not stop slipping or shift flares, it’s time to call in a certified mechanic or transmission builder. I didn't think the Allison software would do a fast learn?. It is constantly logging data and altering its shifting faster than you can blink. It has done this ever since we purchased it in Has anyone used a YOUCANIC UCAN-II-C to do your cvt relearn? I managed to clear the at learned values but can't not seem to find the function to do the relearn. Connect to TCM with a scanner scanner and and perform transmission relearn and and readaptation readaptation process . The Best way to Relearn a Allison Transmission on a Duramax Truck Master 338K subscribers Subscribed Feb 16, 2009 · The allison is a smart transmission. PUSH BUTTON Aug 14, 2025 · The relearn process helps the transmission adapt to the vehicle’s specific characteristics and the driver’s habits. Be sure that the scanner has successfully successfully performed the the relearn relearn procedure. However it gets very used to the stock power and once you load a larger tune there is so much info in the computer that it takes while to reset itself and learn Mar 26, 2021 · In general, FastLearn is a procedure for Allison 1000 Series transmissions in which a series of tests are run to allow the transmission control module (TCM) to learn individual clutch characteristics. What the manual downshift procedure (first recommended by SteveO) did was to help adapt the harsh 2-1 downshift that some people had complaints about on the early 2001 trucks. Our current coach, 2007 Beaver Marquis detroit series 60 14 liter with the allison 4000 seems to shift smoothly except for when it locks up the torque converter in 2nd gear. The Allison TCM has no "relearn mode" other than the resetting of all shifts (or selected shifts only) to unadapted values using the Tech II or similar tool. Owners often replace solenoids and do a relearn, yet slipping persists; that pattern signals deeper issues. Our previous coach shifted like a dream. Nov 22, 2024 · Learn how to perform a quick transmission relearn with an OBD2 scanner to improve shifting and smoothness. This is our 5th coach, 2nd diesel. May 16, 2025 · What Is an Allison Transmission? Allison transmissions are advanced automatic transmissions primarily found in heavy-duty vehicles like commercial trucks, buses, and certain pickup trucks with diesel engines (particularly GM Duramax models). Follow our step-by-step guide and troubleshooting tips for the best results! This is our 5th coach, 2nd diesel.