hello, i am having some shifting issues with my 09 elantra. itdoes not do it all the time but it is getting worse. sometimes it hesitates when it goes to shift other times it does what i call a double shift where it is like it shifts but then imediately shifts again. i have taken it to a couple of shops but they can not find what is wrong. i have been told by one shope that it could be a sensor problem of some sort or that the car might even need an update. i am just wondering if anyone else has had similar problems and what you might have done to fix it. thanks
Jeremy