Originally Posted by Mudrakle
I had a problem a few months back as well with my Transmission only shifting into 4 gear "limp mode". I took it to the dealership since I have an after market warranty on it. They had to replace the throttle body. It is a known issue and is covered under the power train warranty ( can't remember for how many years) I hope this may help someone.
I think you probably mean the valve body (not throttle body), but again please realize that there are many different things that can cause transmission limp-in (4th gear only), so you have to check the fault code(s) (and usually, run some further diagnostics) to determine where the real root cause is.