I would like to share this. being faced with a trans rebuild, I decided to expierament and see what would happen ,here are my findings so far.on this @#$%$#^^%$ 700R4. I had the valve body replaced,as well as a new gov. assy.also a new TV cable ,a factory correct part ,too. everything was great till I stopped at a light .after 85 or so miles, it wouldn't shift out of 1st till about 6500 rpm. which was the original problem anyway.doing a internet crawl I found this sea foam trans tune . after adding the whole 160z can in ,I took off for a test .to my amazement after a few miles the shifts began to occur at ever lower rpms.after 25 miles .it shifted smooth and sanely, now I know that this aint a miracle.and im gonna do a stock re build on it sooner than I like BUT this stuff WORKS as advertised. how often do you hear that???

 

It worked in my brothers car to. He had something sticking in the valve body and the Seafoam trans tune must have cleaned it up as it shifted fine after that.
It is not a miracle potion, but if you have a sticking valve it just might clean it up and get it working again.