well my story isnt nearly as long as some of the stories i have read here about a shuddering transmission. I have a 2007 A/T with 63,000 miles.I started having problems with the shuddering 2 weeks ago. After a week of it getting worse and worse i took it into the dealership. i left it this last monday and got a call from the tech asking all the details. I told him it was shuttering at 1500 rpm around 25 mph and near 40mph. The tech called back saying he took it for a test drive and felt the problem. he would need to keep the fj overnight. Two days later i got a call from someone at the dealership saying they had a toyota rep in the area and he gave the problem a look. The diagnosis was my transmission is shot and that i would need a new one. I bought the fj used from a nissan dealership and so my extended warranty was through nissan. A nissan warranty rep came to the dealership to check everything out and he approved all of the work. I am now in a rental car 5 days later and my fj should be out of the shop by monday with a brand new trans. :clap: I am very happy with how Garden Grove toyota has taken care of the problem fairly quickly.