1. lane departure warning only works with hands off the steering wheel.GM refuses to fix it as they said they designed the vehicle this way. Who in their right mind drives with hands off the steering wheel, we bought this feature for our young drivers to have them reminded if they drift out of their lane. 2. warning window about distracted driving displays on the radio screen while driving, so you have to take your eyes off the road to push ok to get rid of it. GM refuses to do anything about that either. 3. seatbelts are non adjustable heightwise and lengthwise. They are ok for tall people, for me being 5'4 they are uncomfortable and rub my neck.so I have to drive without them. GM in 2018 designed all their GMC and Buick vehicles this way, to save money, I am sure. These type of unadjustsble seatbelts were used back im the 80's.

- Boynton Beach, FL, USA

Their is a start/stop feature in this model where the car automatically shuts off when the vehicle starts. I'm told it's for fuel efficiency. One day I stopped at a stop sign which happened to be on a small hill. The car stopped and began rolling backwards. It scared me and I thought I would hit the car behind me. I immediately took my foot off the brake to make the car re-start, then immediately stepped on the brake. I don't think we should sacrifice safety over fuel. If only there was an option to disable this function. I was scared for the people who were behind me. Scary situation to be in!

- Bryant, AR, USA

There is no way to deactivate the auto / stop feature; I consider each user should have the option to activate or deactivate this option.

- Carteret, NJ, USA

Purchased a brand new GMC Terrain. 12 days and 460 miles later the service engine soon light came on. Took it to dealership for a P050F. This is code for a leak in the booster. They did not repair anything, just checked for leak and reset engine light. As I read more, the problem affects the brakes ability to function properly increasing danger to driver. There is also defective stop/idle on the engine that no longer works. I was just driving down the road in town when it popped on. GM and young's have refused to refund this defective vehicle.

- Corunna, MI, USA

Driving over a bridge over water, a loud explosion happened.at first I did not know what it was, until I heard wind blowing from the moon roof area.the glass on the roof exploded and sent glass down ward.luckily I had the moon roof shade closed or the glass would have came down on me.I nearly lost control. The weather was dry with a overcast sky. The traffic was very light.it was not possible for any foreign matter to hit the glass.I ammediately drove the vehicle to the GMC, where I purchased it.( dixie Buick GMC).my vehicle only has 2040 miles on it.this was a Saturday and the service dept. Was closed. Spoke to the sales manager, who said he never seen anything like this before. He gave me a loaner car to use. The service dept. Called on Monday, and stated that the was no defect, and I or my insurance co, would have to pay. I called GMC customer support and they stated that they would do what the service dept. Said.so they will not cover it.finally today I called my insurance co. And looks like they also will not cover it.I'am still waiting for a final decision from state farm ins.my vehicle was traveling South on interstate 75 in South West Florida in ft. Myers.

- Bonita Springs, FL, USA