Hi Scotty ! I have a question. I have a 2017 Chrysler Pacifica minivan. 56,000 miles currently, I’ve had it two years it was bought used at 24,000 miles dealership. Never had any issues until recently it started dying randomly on the road and pulling and tugging very hard RANDOMLY almost never. Only once in a blue moon. Traveled and never gave me issues. Yesterday driving back home the car being an hour away from home just stopped having any energy to drive on the highway. I drive at 70+ and I was at 25mph on the highway. Shaking incontrolably and struggling I made it home almost two hours later…. Check engine light was flashing the entire time not solid actually flashing while driving. We stopped at auto zone and asked for check engine light machine. The code we got was P0306 cylinder 6 misfire. 
I have no idea what that could be? Spark plugs ? Maybe the coils or even the fuel injector. What do you think it could be and where should I start ?