Here's a little help for those who are having late 2-3 upshifts with the later electronic controlled 48re transmissions. This problem drove me nuts with a fully built transmission that had only one quirk!!! It would actually shift from second to first gear, tack out and the shift back to 2nd then quickly to 3rd. If that made any sense. Lots of the factory transmissions from Dodge do this. Hopefully this helps alot of you and saves you some money on troubleshooting... I had asked this question on every forumn out there and nobody could help me out, not even some of the transmission guru's out there....
This was a $24.00 fix that costed me alot more than $24.00 to troubleshoot due to a fully electronic transmission. If you fool on piece of electronics, it usually throws something else out and so on...... With this, you do it and then raise line pressure to match your shifting liking... So easy!!!

 

awesome info!!!

 

Thanks man. I didn't know if I was the only one out there as this post has dust on it....

 

I look at it daily and wonder if i should go for it! So let me get this right...I would use my stock sprind and then add shims right?

 

Sorry 05 but I didn't install it. It comes with all the stuff and you just need to pull the pan to do it. install it, try it and if you don't like it, go back to the way it was.