Note that the Transmission Health Monitor can only be reset using the Allison DOC software after a clutch system issue has been corrected. For either a pushbutton or bump lever shift selector, press and hold the Mode button for approximately 10 seconds while you are still in the Oil Life Monitor mode.
How do you reset Allison TCM?
To reset the TCM, I turn the key to the ON position, step on the accelerator pedal for 10 seconds, turn off the engine, release the accelerator pedal and wait 5 minutes for the engine to restart.
How do I reset my shift Allison Transmission?
Allison Transmission Transmission Service Indicator Light Reset
- To reset the service indicator light.
- Turn the key on, do not start the engine.
- Move the shift selector to N-D-N-D-N-R-N, pausing briefly (less than 3 seconds) between each selector movement.
How do you check the codes on an Allison Transmission?
Using a lever shift selector, press the DIAGNOSTICS button two times. To read diagnostic codes in the digital display: Diagnostic codes will appear two characters at a time on a pushbutton or lever selector. The Code Position (d1) is the first item displayed, followed by the Diagnostic Trouble Code (DTC),** P, 07, 22.
How long does it take for an Allison transmission to relearn?
Re-learn normally takes up to two hours (this time can be significantly reduced by using Tech2 or PC based Allison software to clear the memory and place the TCM in the ‘fast learn’ mode). During the relearn there will probably be some clunks, bumps and/or short flares, especially during the 3-4 shift. This is normal.
How long does it take for transmission to relearn?
“Slap hands slap hands” My truck typically takes 3-4 days before it seems to shift smoothly and feel like the transmission has for the most part re learned after loading a custom tune. It all depends thou like Mark and ZMann said on many factors especially how you drive your truck and how often.
How do you relearn a Duramax transmission?
Start the re-learn by making at least six sets of light throttle upshifts through all the gears, then make another six sets at 1/3, 1/2 and 3/4 throttle. Downshift the same way by starting at light throttle and working up to full throttle.
How do I reset my Allison Prognostics?
One way to reset oil life involves the Mode button on some shifter designs. After accessing the oil life display, push and hold the Mode button on the shifter for 10 seconds. Another method is to turn the key on, engine off, and then move the shifter between N-D-N-D-N-R-N.
Will disconnecting battery reset transmission?
Will disconnecting the battery reset TCM? Simply disconnecting the battery would not return the TCM to its default settings, you would need to use a transmission scan method to do so. Disconnecting the battery terminals will not complete the phase or solve any gear shift issue.