Feel yourselves fortunate, you could be like me and after several dealers not finding my problem, got stuck with a private diesel shop that, IMO accidently found the problem (crossover tubes) costing me $7500 for his repair only, not to mention what I put into this truck through all the dealers that claimed to fix my problem and said "sorry not under warrantee". nightmare story, posted it here a few months ago..... moral of the story, know your truck, diagnose the repair yourself and here on tdr don't let yourself get snookered like I did. BTW, truck runs good now and should have cost me $50 in parts plus 1 hr of labor.