Hi everyone. Im new to this forum. Just sold my dodge and bought a 2004 chevy k3500 single wheel 6.0. Love the truck. But just started to throw a random missfire code. I know this question has been asked a million times so i do apologize. But it only throws the code when i let the truck idle for over 10 mins then if i drive around for awhile the light goes out which i think is a little strange. It never blinks or anything. Truck starts right up and seems to idle smooth so im a bit confused. Had a dirty air filter so changed that and cleaned the throttle body. Checker the plugs they are new. If anyone has any help id really appreciate it thanks!