I have a 98 Saturn SL1. I e replaced my filter 3 times. When I shut the car off it leaks from the transmission filter. There are no cracks or dings where the filter screws on. It makes like a suction sound and that's when it starts leaking.

 

Could be you're putting it on too tight. Sounds to me like your seal is leaking. Get another filter, remove the old one and clean the mounting surface. Spin the new one on and and once it's snug, tighten it like an oil filter. Another 1/2 to 3/4 turn and see what happens. If it's not that, then I can't tell you what to do.

 

Have you triple checked you are using the correct filter?

 

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Don't know what that's about. I'm not yelling