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Mine has always done the same thing on my 09. I just clear the codes after a read. Something pisses it off.

Is your truck constantly pulling timing at cruise speed light throttle and maxed at...

Added the tune file, still on stock engine tune. Playing with the trans a bit more than anything, but just happened to notice how much KR the engine has going on, it needed plugs anyway, so i threw...

I getting knock retard at part and full throttle, driving the timing down to nearly nothing, and even off throttle is showing knock retard. The engine isnt tired or noisy at all so I dont suspect an...