no I dont have any trouble lights an Ive changed the fluid an filter I put a diagnotic an get a Code of P0783 an it says 3rd an 4th shift but befor that it wouldnt shift into over drive the guy I boug
Read all about it - http://engine-codes.com/p0783_dodge.html
Is the haul/tow button depressed. If the ambient air temp is like 0 or so far below zero it won't go into over drive per design.
3rd and 4 shift could be a problem with solenoid B, or the governor pressure senor, or governor pressure solenoid. dodge trucks are known to eat all 3
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