is the truck idling rough, white smoke out the tail pipe or oil fill tube, etc.........
could be a cracked piston, or could be nothing, I have had the code for cylinder 5 misfire several times years ago without any apparant problems :dontknow:
no it dosn't idle rough at all, seems like it sounds different while that code is showing, but when its cleared it runs like a new truck. no smoke nothing. i but a exhaust on it the other day and it showed not long after that... but only when i leave it running at idle. like when i go in a gas station??? i dunno?