02 gmc yukon Denali xl 6.0

[Jjohnbubby5]

New to me 02 gmc yukon Denali xl awd 6.0. I've got this codes I know top is knock sensor and a couple are because there are no cats. I'm just trying to get everything tip top. No plans on replacing the cats.

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[Jjohnbubby5]

Also.... How does the fuel option work on the SIC? it only shows miles remaining? Will it show current mpg?

 

[Jjohnbubby5]

Anyone? I'd hate to just start throwing parts at it. Runs and drives pretty well? Oh and I have 289*** miles.

 

[01ssreda4]

It will only show mpg if its programmed correctly. When I replaced my cluster with a different one I did not have it correctly programmed I just did a plug and play deal. That made the mpg feature not function any longer. But yes it should be there.