need help I'm ready to pull my hair out. started the truck up one day was letting it idle and just like that the truck shut off. will not start. there was a ground wire on the left side kick panel that was not grounded at the time but now it and still no start. I have tach movement, wait to start light comes on, hpop is full, fuel bowl fills and all fuse are good. I cant connect to obd port because it says can not connect to ecm. NEED HELP!