Help Transmission is Stuck Sometimes.
The cause of it getting stuck in fourth is usually that you are overextending fourth gear which is possible when jamming it down into fourth to many times. Eventually you will bend the shift fork allowing you to shift further than you could and since you probably dont have a shifter with stops (bolts that stop the shift stick) there is nothing really to stop shift...
Your probably experincing the poping out the third also.
Depending on how long you have been driving with it like that after it got stuck in fourth you will need a total rebuild...
Its alot easier to fix if its still stuck in fourth. Im pretty sure the dealer wont cover it theyll probably say it was abuse on your part. When you get your tranny rebuilt, get a shifter with stops like a pro 5.0 or a B&M and this will help prevent this from happening again...

