I had better luck by trading my 2004 K-1500 4 W/D 5.3L 22,850, On a new 2006 F-150 5.4L 4 W/D, somehow that knocking went away and hasn't returned yet since Sept, 2005, lol, Ahhh the 2004 Chevy had other problems also, but thats a whole different story, I thin... Login to read more.