Hey guys just wondering if you can tell me the tsb number for the new shifting upgrade. Thanks

I'm guessing you have an '06, the TSB #'s is: 21-020-06. Check here for all the info: http://www.wkjeeps.com/wk_tsb.htm
The flash is for the TCM not the PCM, though I haven't got mine yet. My stealer wont do TSB's unless you have the problem explained in the TSB.