I've read alot of post about trans problems mainly missing gears or slipping well mine just started acting up yesterday. Once it warms up it starts slamming into the next gear, only when up shifting. Any ideas???? Car has 146k on it and I just recently bought it so I have no clue on trans history, checked the fluid and its red and at proper level. Thought about a trans flush but I think that'd be tempting fate. Any help would be appreciated. Thought about taking it to a trans shop but have to do some research as to a good one in my area.