As someone who scours through forums trying to find answers to car troubles, I would like to make a contribution for a solved P0301 code.
I bought this truck knowing it had a miss in cylinder 1, got a good deal because of it. It was a very obvious miss, this truck, while drivable, ran like crap! Immediately started researching everything about misfires on the LC9. First, started with the easy stuff. New plugs and wires, no change. Checked for spark on no. 1 cylinder, it was good. Swapped out the coil pack with the no. 3 cylinder just to be sure, no change.