I owned a 2014 Acadia Denali and for some strange reason decided to trade for 2017 model. New 2017 model sucks ! Lane departure warnings DO NOT WORK. NO BEEPS if you change lanes without turn signal - Regardless of your speed or which streets or freeways you are on - I tested this along with 2 people from dealership - we drove over 100 miles testing this !!!! ( 0f course after I leased it !!! ) - Never Worked . Front Collision does not work unless you are about to HIT the Vehicle ahead - beeps if you are about 10 feet away at 30 MPH - If you are parking behind a car, it will beep only if you come within 8 inches !!! DEFEATS the purpose of having this ! MY 2014 Acadia Denali worked fine - it would beep if I changed lane without turn signal and would also beep if I came close to another vehicle - depending on my setting - far,medium or near ( forward collision ) . Front Auto Braking does NOT WORK . I went to 3 other dealers to show me how it is supposed to work - They were all surprised to see it does NOT WORK !!!! I assumed that 2017 acadia denali would be better than 2014 I owned and assumed that everything that worked on it will work better or at least the same way - NO NO NO ! Big Disappointment !!!!! Also new 2017 Acadia is Way too Small !!!! Please TRUST ME - Before getting this , do ask the salesperson to show how all the features work - Trust me , you will be disappointed. The ONLY good thing is that I leased it and will get RID of this S*** in 2 years ! Have previously bought 2011 and 2014 Acadia Denalis - WILL NEVER BUY or Lease GMC again in my life.