I hope someone here can help me out. I have 2013 Silverado 1500 LT with 160+ and she's been acting up the last couple of weeks. The check engine light came on throwing code p0305 which is a misfire in cylinder 5. So we replaced plugs, wires and coils on all 8 Cyl. Now it will run fibne for a few days then start to misfire again and the following service messages popped up: Stabilitrak off, traction control off, service stabilitrack, service traction control. As soon as these popped up the truck started idling really rough. Then I shut it down and it will be fine for an undetermined random time, then start all over again.