schnezz

With having less than 1,000 miles on my 16 slt I have the same issue. Since I picked it up with only 10 miles on the truck, I figured it was just the cheap gas the dealer had it filled with at delivery. I've ran nothing but high test through break in and gave GM the benefit that it would go away. Needless to say it has not. I have no problem taking it to the dealership when I get a free day but would like a little fire power when I get there. My thought of the service writer saying that's what try do and no fix is unacceptable