Was driving normal and it died on the interstate. We changed the starter because it was just changed and thought it might have gone bad. After replacing it again it is still having the issue with not starting correctly. What would make a vehicle just shut off while driving? It’s rough and doesn’t just start have to hold it to get the engine to turn over but dies quickly.
None of this sounds like a starter issue. The starter is only in use while cranking the engine when it is not running. If the engine died while driving down the interstate, that has NOTHING to do with the starter. Further, if you are able to crank the engine and holding the gas pedal down is what is required to start it, this is still proof the starter is working fine- the engine is turning over. If you aren't holding the key turned to the far right/clockwise 'Start' position then the starter isn't being used.
I'm guessing you have a Hemi since you have the Limited package- your profile doesn't specify which engine you have.
Your's being a 2008 tells me you should be safe from a dropped valve seat, also that wouldn't have happened while driving. Depending on the amount of gas smelled it could just be miss-fires, bad coils, plugs, etc. This also tells that at least the fuel pump is working.
Besides the already stated of checking for DTC codes, I know lifters can fail through almost all years of the 5.7 until like 2012 or 2013.....and this might not throw any codes, just how a dropped valve seat would never throw a code. And would have the exact symptoms you are talking about.