is the tranny that they put in USED or REBUILT?? it makes a BIG difference... and i would say yes take it back in either way, be like " bitches its still doing the same thing." and the other thing is MAKE sure you know they replaced your tranny.... put a mark on the one you have now, like a scratch or something, so that you can distinguish it from any other. and if they do """ replace it """ again ask to see the old part.

BTW YOU ALWAYS WANNA ASK TO SEE THE OLD EQUIPMENT... PEOPLE ARE LIARS THESE DAYS. make sure you make it clear that you wanna see the old tranny and for them to keep it, and have someone like sign off or something else that would be credible. sometimes they will just try to do a temp fix on it to get you out the door, then 90 days later they be like... OO WE CAN"T HELP YOU... I've acctaully heard of places putting like saw dust in trannys, this will eliminate all signs of damage untill its too late to do anything about it. hope that helps man