the issue with my grand cherokee 2002 transmission was bad shifting. it would shift very very hard if i got on it to get on the highway. you would feel it rev up, one sec later it would slam into gear jerking the snot out of you... later it was just over all shift issues. it was well maintained and i never abused it. maybe i had one in a million [censored] transmissions but i know 4 other guys with 00-03 models and ALL of them have transmission issues starting at 75-80k miles.. i personally think that what Aisin makes for yota is different that what it makes for Dodge\Chrystler\jeep.. thats just my opinion though.