DreamCadi, can you advise on any technical bulletin for this that I could reference with my local dealer.
I'm having the same issue with rough idle that everyone else here has described in a brand new 2016 Denali Yukon.
The dealer I visited said the rough idle was "characteristic" of the 6.2L and that I underestimated how much power is in that motor. Apparently I should expect the idle of my new truck to mimick that of a hot rod chevelle from the 60s.
Any help on how to approach the dealer for a fix would be greatly appreciated.
