I have a 2003 Dodge Caravan 3.3 liter V6 I replace my starter I replace my battery my fuse box and fuses was checked everything was good but it will not start somehow someway it will not send a message to ECM when I try to start the key. What do i do? I dont really want to spend alot i mean alot of money on a ecm if it could be something else. Because when i looked it up they said if its not the ecm i could be buying brand plug and play and it could damage it