Do you know where i can buy a transmition dipstick

You need to pull your oil dipstick and see if there is any indication of water/coolant on the dipstick. If there is, then it could be either a blown head gasket or a cracked block. If you see ANY indication of water on your dipstick, then I would suggest you go to your local auto parts store and buy a tester to check for combustable gases in the coolant, to verify it.

see if advanced auto, or autozone carrys it

check and, possibly replace the universal joint bearings

start and get warm open hood the dipstick is on the left car must be running to check

You can get one from a dealer for big $$ or just go to any scrapyard and get one there, really cheap!!! (make sure the trans it came from is a match to yours)

hi
your blend doors are damaged or broken, go to heatertreater.net they have a quick fix blend door repair kit that you can install yourself in around half an hour, this really works as i have fitted a few myself. jeep will quote you around £800 to fix.
hope this helps

if you give me the vin number i can tell you which trans it has

Auto tranmitions are located in the rear of the engine compartment usually hidden by hoses. Manual transmitions dont have a fill tube. You ahve to get under the vehicle and pull out the top plug and fill it until the fluid starts to come out of the hole. you check it by putting your finger in the hole to see how far down it is to get an idea of a little or alot. Plugs usually have a square head.

need new gear box