Question for all my mechanically inclined friends..my brother scanned my car and the code is P0730. Per Autozone the def is faulty shift control system and probable cause is low transmission fluid level, poor electrical connection or failed transmission shift control system. I may have to get it diagnosed by Merchants since my bro does not know for sure which thing is wrong and he can't do transmission work anyway. Any thoughts or advice would be great. Also anyone ever deal with Merchants? It's near where my car is right now so have to take it there to avoid another towing fee. Thanks!