My truck has realy been aggervating me. It misses under load. I thought it might be plugs or a bad coil pack. Dealer said nothing showed up on faults and changed the spark plugs. Well that straightened it out for a while, now its actting up again. It seems like every time I drive it, it's a little worse. It's missing too bad to run overdrive now. Anyone have any problems with these gas motors. It has 94K on the truck. I hope someone can help.