My 2016 yukon denali has a vibration problem, which i believe is caused by the magnetic ride control. the vibration does not speed up, nor slow down, depending on speed. it is, however, more noticeable when there is any road imperfection. the gmc service dept. has balanced and rotated tires, even sent it to two other businesses to try and fix -- alignment, etc. vibration continues. i've had passengers who ask "why does your car have the shivers?" gm dealer did get ahold of a gmc technician who flew in, and drove the car and said -- yes it has a vibration, but it is in acceptable parameters. my dealer has provided me 3 different rental cars while working to try and fix the "shivers" ... all three were fairly new, small buicks, and all 3 rode better than this new $75,000 denali. i love the vehicle, hate the vibration. gmc itself has now told me -- your case is closed! the vibration is within acceptable limits. the dealer has let me drive two other yukon denali's ... both have similar vibrations... just not as bad as this vehicle. vibration is noticeable at 25 mph, as well as at 80 mph; although it is more noticeable on rougher roads. i am happy to share the reports from my local gm dealer, who completely agrees that the car shimmies. we tried the gmc buyback program, and i was told by gmc that program is not available to me, even though i took the car back to the dealer when i had less than 100 miles on it. and have been taking it back regularly since.
When the vehicle reaches 40-60 miles per hour a vibration occurs... often sounds like a window is down and can cause nausea and headache...