Front pump seal and pupm bushing

SOURCE: Locationof the Torque Converter Clutch Solenoid

Your transmission should still work if the solenoid goes bad. It will just shift funny

SOURCE: Transmission Leak. Torque Converter Front Seal?

I know that GM dosen't have a fill/check tube on several models. They use a plug on the side of the unit (like on stickshift transmissions) I'm sure there would be a similar item on your transmission otherwise after a rebuild, there would be no way to refill it. If it's a small leak you could try using a good sealer/conditioner such as Lucas, which may help you a lot.

SOURCE: 95 ford escort transmission leak

Dont waste your time and money trying to use a transmission stop leak product, they don't work on large leaks, you say the leak is excessive in this case the you must remove the transmission to access and remove the torque converter, after you have removed the torque converter carefully inspect the torque convert imput shaft for wear and also you will need to visually inspect the transmission front pump bushing for wear also, I have seen it all to often people just replace the seal thinking it was just a seal failure, well more times than not there is a reason for seal more than just the age of the seal, excessive wear on trans pump bushing and torque converter imput shaft is usaully the cause, check and repair those as good practice during this repair unless you just like to do the repair over again for free... also check the torque converter run out, sometime when they are repaired they are welded back together somewhat crooked which will cause it to spin off of a true center, this will cause immediate damage to transmission. Check also your engines crankshaft end play for looseness this can cause wobble which will transfer to transmission causing this problem as well... do the repair thouroughly and who ever does it for you have them check all that I listed and you should get a good repair which will last without issues.... please rate my help thanks...