The led brake light does not work. The light is an entire assembly that owners must replace by buying a new unit for $700. The unit is supposed to last for the life of the car. It's a defective piece that is difficult and expensive to replace.

- Huntersville, NC, USA

Purchased vehicle used @ 32K miles. Vehicle almost un-rideable due to rough ride & terrible vibration. Took to GMC dealer, they replaced one front shock (completely leaked out) and one bad rim. Truck still rides extremely rough & has a vibration between 35-55 mph. Almost unbearable on longer rides. Tires are brand new. Dealer says that it is within spec. This should be illegal on a $75K msrp "luxury" SUV!

- Frankfort, NY, USA

Radar does not recognize smaller car on the right lane left side does not see a car when changing lane with the turn signal on. Interstate. Off ramp sunny day high sun 09/05/2018

- Omaha, NE, USA

Water leak due to bad front windshield seal, water leak through gps antenna, four wheel drive module was bad, dvd player stopped working, and lastly a horrible vibration that occurred around 77-83 mph. To the point the vehicle did not feel safe to handle. Trim on the B post kept coming loose. This all occurred in over a years period of time. This was my second vehicle because I traded in my 2015 Tahoe because it was having many of the same issues and more. GM did repair all issues other than the shaking, they wanted me to buy tires and after reading other complaints on the shaking I refused, the tires only had 25,800ish miles on them

- Monroe, NC, USA

Engine stumbles and shakes feels hard and very rough extremely. Starts at about 5-10 mph and shakes even when in park. And there is an oil consumption we take it to a GM dealer and they say there's something going on in the engine but they will not fix it till it breaks down completely. Being the mother of 2 little kids and also being pregnant I can't have that happen and need help asap

- Milwaukie, OR, USA

I was traveling to phoenix, AZ of all places and my air went out in 110 degree heat. I've seen the other complaints so I just wanted to submit mine. This was August 26, 2017.

- Dallas, TX, USA

Pressure, sound and sensation at low to mid range speeds. Creates a in cabin vibration like a single window is down causing a helicopter like sound. Seems to be mostly when it drops into the 4 cylinder mode and you are accelerating. This is a major issue as noted for many people as noted on multiple internet searches. Please do something!

- Hickory, NC, USA

Vehicle shakes and vibrates horribly at hwy speeds I have taken it to the dealership with no fix same problem

- Victoria, TX, USA

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 Buick, 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.

- Richland, WA, USA

Vibrates when at speed 70-85.

- Alpharetta, GA, USA