My local dealership just told me that the code P0740 means I need to replace my transmission. I have a 2000, 5.9, 4x4 with 154 K miles (Durango). A friend who owns a tranny shop said to have them check the convertor clutch solenoid, that they find that this is the more than likely the issue. (I don't take it to him as he is hundreds of miles away) When I called the dealership to get them to check that issue..they were put off by it and said they could do that and hope it fixes my problem. Husband is deployed to Iraq right now and really need opinions on whether or not you would just fix the solenoid or replace the tranny...HELP!!!