[Mudchief]

Sounds like your transmission is going into the LIMP MODE. It will do this if it detects something wrong in order to protect itself from further damage. You will not necessary see any lights. The engine will do the same. When my fuel filter starts to clog the engine detects that and will not go over 2000 RPM. However no lights will show. If that is what is going on your dealer can read the codes that say what is wrong.