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Showing results for tags 'redvett'.
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Have a 2007 yukon flex fuel 5.3 l for 6 years now..Valve blew at 102k miles...dealer replaced all lifters valves top of moter...Then at 180k started ticking then would stop.Icould be sitting in a drive thru with quiet motor running then all of a sudden ticking would start and last for about 15 minutes then quiet down...Now at 197 happening more and seems to be getting worse the past week after i tried seafoam in it and changed oil again...i have used synthetic since my first major repair...So i guess what i am asking is do you think i am about to be screwed again? or should i try something other than seafoam in oil or is it too late to install the afm on this truck thanks