2003 Ext Cab ,SB,4wd.LB7,ally. 17k miles.. I have noticed an occ. dieseling when I go to shut 'er down?? Also seems to have lost some of its PEP??? Just had it to the dealer for oil change, fuel filter and they said "they check everything" "No Problems"..identified??? Any suggestions or do i just wait until it gets worse?? I am planning on putting in a juice No attitude?? Will I hurt any thing???Thanks for your Time..http://www.dieselplace.com/forum/smileys/Geek.gif