I have an 06', w/150k on her. went to replace the cracked ex/manifold and broke a bolt of in the head( back against the firewall, of course!), could not get it out, took it to the dealer, as I don't have the time, or tools to do it myself. Long story short, machine shop could not remove it(????), had to get new head. after p/u my truk, ran great, no exhaust tick. drove bout 25 mi. parked, and when I restarted, sounded like someone dropped marbles in the engine. sent back to the dealer, broken valve, dead engine, dealer will replace entire engine for no cost to me, good but what a PITA!!!!!!!.