its a programmer right? take it out. its worth a shot, theres alot of us diesel techs out there that don't really worry about trucks with chips, especially because these are somewhat common problems anyways, if it dosen't work when you get the other stuff put on make sure you buy an oil and probbably egr cooler, that might be the problem more than the headgaskets. we replace alot more of them than headgaskets