Well today I replaced my transmission filter and added back in new fluid. Hoping it would fix my problem, that's a no go. So here's my problem. Going from 1st gear to 2nd ONLY I hear a high pitch noise for about a second or 2. Every gear change after that is fine. Just going from 1st to 2nd. Have no idea if this is slipping or something else. Can feel it also it's not really bad but you can feel it. Anyone have an ideas and if it is how much do you think it'll cost to get it fixed?