Hi, I have a nice 92 deville with 184000 on it. Trans just went. It works, moves the car but slips in 3rd thus won't go to 4th. It shuddered a few times in the months prior to this happening. Is it the converter, or the complete transmission? A shop checked it and said a rebuild is necessary. Fluid is a bit burnt. Any ideas about a used trans.? Should I replace the engine and trans together with a used, lower mileage unit? Thanks for your ideas.