I have a odd problem, when my car shifts from 2nd speed into 3rd speed it jumps like 300-500 rpm. Its like its slipping into nutrual right before the next speed. It does it around the 3000-5000 rpm range. Anything below that and above that it shifts like it should. I figure if it was a big problem I would have a big slip at the red line but its rock steady there. Could I have a bad TCM? Any help would be great, thx...

 

Try a fluid flush......if no improvement check the linear solenoid...then there are umpteen other components.