timmyltr

I would start with the fuse and then the relay.

i did with a 14 slt 5,3, i saw 1-2MPG better. But way down on power!! The new Denali didnt got me all excited anyway. I think ill stick with my 10 denali for another year and then ill take another look.

Im surprised about the MPG posted, i expected better than that! certainly not enough to justify switching my 11 denali for a 14 denali 5,3! my 6.2 average 18 mpg gallon on highway, i thought it sucks but really not that bad after all!