ok i here that a tc and valve body is ok if there is no internal leakage and you need to check the line pressures to make sure of this . so how do i check this

 

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ok will the snap on scan tool do this or do i need to take it to a dealer

 

If you understand the auto trans, just use a gauge on the ports on the right side of it.
Middle port is angled forward and is the line/ accumulator port. This will show the pressure you want to raise/check. Then you need to go to the front port and it needs to be with-in 3-5 psi of the middle one.

Middle port has pressure in drive.
Front port has pressure in 2and 3.
Best to get a manual and the best is the Factory service manual.
0-300 gauge is good.
There is a lot more that gauge reading will show.