Re: SRT wont start/fire just out of the blue
Usual No Start issues come from the relay control module or crankshaft position sensor.
Either one can cause a Crank but no start issue. CPS may give a PO335 fault code. If the car won't crank, could be bad solder joints or a bad relay in the RCM (I repair RCMs).
Give us some more detail so we can help.