What 55 owners told NHTSA about the 2024 GMC Acadia Denali

When lowering the 3rd row seats the headrests will not fold down, making it impossible to lower 3rd row seats fully

NHTSA ODI 11617307

Safety Restraint System Service light alert comes on at start up. I purchased this vehicle july 20th and returned vehicle to dealer for service on sept.5. I was informed the steering wheel air bag and coil are faulty. The repair parts are on back order and would take at least 5-6 months to get. I contacted GM customer service and was told the air bag system should still function according to GM. I have had this vehicle @ 2months, I don't feel comfortable letting my wife drive this vehicle or transporting my grandkids in it.

NHTSA ODI 11616573

while backing out of my driveway the auto braking went off 3 times and there is nothing behind me. i took the vehicle to the dealer and they just put all emergency braking systems on alert. my sales person took a gmc acadia up north and the same thing happened to her.

NHTSA ODI 11614570

Left rear tail lamp failed after only 90 miles. It is available for inspection upon request. This tail lamp also contains the left turn signal, so when turning left, the signal flashes faster. The dealership has been notified of the issue and has inspected the issue in question. There were no warning lamps indicating the lamp was not functioning until I turned my left turn signal on. Now, there is a check left tail lamp indicator every time I use my left turn signal. I have been waiting on the replacement part for approximately 6 weeks with no ETA on a resolution, all while GM thinks its ok and safe that I drive my car without a left rear turn signal and brake lamp.

NHTSA ODI 11609843

2024 brand new Acadia Denali trim with 1k miles was brought in to the dealership because of 'popping' and 'grinding' noise when turning, most loudest when turning to and from the right. It was also very much felt on the steering wheel. Dealer took apart the front right strut assembly and said that it was not 'installed' properly, causing the springs to hit the fender everytime the wheels turned. They inspected it said that nothing needed to be replaced, installed it properly, test drove it and determined that it was fixed. Driving home, I sped through potholes and bumps, especially during turns, to really test their repairs. Luckily, the sound was gone, steering was smooth. And I hope it stays that way. Out of curiosity, I took a picture of the strut assembly post Repair You can see the coil is bulging out of place from the strut. This is only in the right side. The pictures show the suspension with wheels fully turned to the right, left, and pointed straight. The picture even shows the part of the fender where the spring made contact with. I communicated in online groups of acadia owners and they said it’s also the same issue, wherein that they experienced the symptoms themselves or the struts look misaligned already. I believe this is a concern GMC should address the soonest as it could lead to road hazards for everyone involved.

NHTSA ODI 11603614