The brakes on the vehicle have failed 5-7 times within the past year and a half. By "failed" I mean that the pedal was touching the floor of the vehicle and did NOT engage. Mechanic was unable to replicate the failure any of the three times we took it in to get it looked at. The brake pads, rotors, and fluid lines have all been checked multiple times and are all in good condition. The master cylinder was replaced and the brakes worked well for about 6-7 months. Approximately 3 weeks ago, the brakes failed entirely, yet again, this time driving on a highway at 70mph. The emergency brake had to be used in order to get the vehicle to slow down. The vehicle was then dropped off at a local dealership, who has kept it for about 2 weeks and states that they cannot replicate the problem when they take it for a test drive. We have 2 young children and this has been our primary family vehicle. There has not been a check engine light or any other warning lamp AT ALL.

- Ipswich, MA, USA

Driving at 55mph, suddenly the Traction Control blinks on & off, the vehicle starts skipping. Next, Service Stabilitrack System appears and I almost come to a complete stop, Engine Running at Reduced Power appears. I barely made it to the side of the road, traffic was heavy at the time. This is apparently a common issue with other Owners and could be a number of different sensors, parts malfunctioning.

- Cornelia, GA, USA

The contact owns a 2012 GMC Acadia. While attempting to park the vehicle, it accelerated unexpectedly through a garage door. The brake pedal was depressed, but the vehicle failed to stop. The air bags did not deploy. There were no injuries. The vehicle was towed to the dealer and the diagnostic results were not disclosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 36,000.

- New Lenox, IL, USA

Sunroof leak driving during rainstorm water began pouring in on the driver side from the parking brake. Caused moldy smell, park brake on/off indicator light and brake on warning alarm now not working. Advised by glass co. And dealership that sunroof is causing leak from clogged drain lines and faulty seals. No recalls or tsb's but hundreds of other owners have had the same issue from 2008-2013 models. Ntsb should demand that GMC address this faulty product. Problem re-occurred during car wash following rain storm. Vehicle has only 30,000 miles, original owner, now out of warranty. GMC will not cover repairs.

- Gilbert, AZ, USA

The contact owns a 2012 GMC Acadia. The contact stated that while engaging the brakes, the vehicle made a squeaking noise and burning rubber odor emitted outside the vehicle. The vehicle was taken to the dealer. The technician diagnosed that the brake booster was faulty and needed to be replaced. The brake booster was replaced but the failure recurred. The brake booster was replaced a second time but the failure persisted. The manufacturer was notified of the failure but no solution was offered. The failure mileage was 20,614. Updated 10/29/14 according to the repair invoice, the brake booster did not affect the performance of the brakes, updated 03/03/15

- Surprise, AZ, USA

The brakes and rotors have been to the dealership 4 times to fix them brakes are wearing down T the metal, brake slider sticking open, the last time it was to the dealership on July 2, 2014 I was told breaks are at current standards for measurements with law, to drive it for a few more breaks because two weeks prior to that they put new brakes and rotors are on, now they are grinding again, but have to wait to call and schedule another appointment because they say there is nothing wrong with them 4 times for the brakes to be fixed and they are not.

- Morrisdale, PA, USA