Shifting issues with new chip

Truck4

Fire Junkie
Hey all got a problem that maybe someone can give some advice on, but need to back up some, ~Nov. of last yr. I installed a set of new stage 1's after that I sent my chip off to be reburned, when I got it back everthing was good except in all three settings (mpg, tow, extrem) to get it to shift from 3rd to 4th and then to lock up I would have to take the rpm's up around ~2000 - 2500 then slightly let off then it would shift, then about a mth ago due to issues not associated witht he chip I had to have my trannie rebuilt, once again I sent it back off, this time I got a chip from a different vender with diferent burns than the first one, and this one is doing the same thing, need to add that with out the chip it shifts just fine as should, any suggestions need some help

Roy
 
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