ok what the hell is a troll? and if its that comment "waving the gm flag" i dont think it should be "banned", thats just stupid.

Im sure no one waves the gm flag part of this site....but that dosent mean he cant share his opinion

that aside, my dads searra did the same thing, and now i know what the hell the sound was. i remeber like 2 cylinders sounded just like a desel engine, i tthough it was some wierd hybrid of a gas and desel engine but found out it only took gasoline so that was out. Other then that s'was a great truck