Warmed up my 04 ram yesterday and got in it to drive. Had problems backing out, it seemed like it wouldnt engage. It did however and i took off up the street, all of the sudden it started reving up high and seemed to be slipping out of gear, then an extremely strong burnt electrical smell enveloped the cab. I nursed it home in low and parked it. Now it won't move. It will not engage into drive, reverse, low or second. The four wheel drive will engage on the floor in all positions however. It has never shown any signs of a tranny issue. Shifts smooth, never bucks and all of the sudden nothing. What the hell could've happened?! This truck is my baby! Help!