This issue relates with a recent recall with the GM brake system (NHTSA campaign number: 19V645000 / GM recall number: N192268490). The recall fix by GM fails to fully fix the problem as additional repairs are required to make the vehicle safe again. The incident began when going down a hill at low speed. A message came on the dash that said "service brake assist" and the brakes seemed to lose power which required the driver the use both feet to push down on the brake pedal to prevent a crash into the car in front. The brakes regained normal function for a while then a few miles later the same problem occurred. This went on for for a while longer until the need to use both feet to achieve full stopping power was permanent. Driver pulled over and, through an internet search, discovered many others had the same problem and a recall had been issued. An appointment was made with a local GM dealer and the vehicle was dropped off for repair. The GM dealer called the driver and informed him that additional repairs, beyond the recall instructions, were required for the vehicle's brakes to function adequately and safely. This included replacing the booster pump, brake pads, to "reline the frt brakes as needed."

- Studio City, CA, USA

Intermittent stalling, ( complete shut down at freeway speeds). No engine, no power steering or brakes, windows will not operate, no emergency flashers, no dash re-out, will not turn over. Happens at any time while in motion. Has placed myself, my wife & other drivers in danger numerous times.

- Houston, TX, USA

The contact owns a 2014 GMC Sierra 1500. While driving approximately 50 mph during inclement weather, the vehicle suddenly veered to the left and crossed over a lane. The vehicle spun 180 degrees and crashed into a ditch. The rear passenger wheel dislodged from the vehicle and was located approximately 150 yards from the crash sight. The air bag did not deploy and the driver sustained a bruised neck. Medical attention was not received. Police report number: Spc32B7N80X was filed at the scene. The contact discovered that a 10-inch section of the brake rotor was missing from the vehicle. The vehicle was recently serviced for NHTSA campaign number: 19V645000 (service brakes). The manufacturer and hudson GMC (2023 South rd, poughkeepsie, NY) were notified of the failure. The failure mileage was 72,000.

- Newburgh, NY, USA

Took it to the dealer for the recall on the ABS breaks, and now it is doing exactly the same thing that it was recalled for. The recall was not helpful.

- Salinas, CA, USA

The contact owns a 2014 GMC Sierra 1500. While the contact was in stop and go traffic, the brakes failed. The contact was able to steer the vehicle over to the side of the road. The contact waited until the traffic cleared up and was able to drive at a normal speed with the brakes operating normally. The dealer and manufacturer were not notified. The vehicle was not diagnosed or repaired. The failure mileage was 117,500.

- Huntersville, NC, USA

The contact owns a 2014 GMC Sierra 1500. While the contact's wife was driving at 45 mph, she attempted to stop the vehicle; however, the brake pedal became difficult to depress and would not stop the vehicle. The contact's wife crashed into the rear of another vehicle. The air bags did not deploy. The contact's wife sustained minor injuries that consisted of whiplash. The contact's wife did seek medical attention. The other driver sustained bruised leg injuries nad it was unknown if medical attention was sought. A police report was filed. The vehicle was towed to a local mechanic where the cosmetic damages were repaired. The cause of the failure was undetermined. The manufacturer was not made aware of the failure. The crash was not in relation to any open recall. The failure mileage was 102,000. The VIN was unknown.

- Newton, AL, USA

The contact owns a 2014 GMC Sierra 1500. While depressing the brake pedal to stop the vehicle, the pedal was very difficult to depress and the stopping distance increased. The vehicle was taken to abeloss GMC (1169 North 9th St, strougsburg pa, 18360) where it was diagnosed that the brake booster was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 80,000.

- East Strougsburg, PA, USA

I came up to an intersection, pressed my brakes, and they were hard to press causing me to run the red light and almost hit another vehicle. Even if a part fails, this should not be an outcome. Brake petal so hard you can't get the vehicle stopped.

- Baton Rouge, LA, USA

Breaks do not work at low speed in reverse, break pedal goes all the way to the floor and excessive pressure must be applied in order to stop vehicle, this is extremely unsafe due to low visibility when backing the vehicle.

- Cypress, TX, USA

Brakes suddenly lock and the peddle to break gets really stiff that when im trying to brake it does not work... I have had this issue happen to me twice already, I was able to avoid an accident because I used the emergency brake, , I was out of town and when I was arriving to the hotel my brake peddle locked and could not brake the parking concrete stopper prevented me from hitting thr building, I noticed that when I shut off tht truck and turn it back on thry work normal again and I am able to brake just fine this happens randomly, I can be on my normal routine for a month then all of a sudden the brake peddle gets stuck, , it looks like its a software glitch like the stability track turning on when its not supposed to, other people are having these issues with these trucks, please investigate..

- Odessa, TX, USA

Braking at short distances. Vehicle continues to move after brake is depressed.

- Seymour, TN, USA

When truck is put in reverse, all power brakes are lost. Assumption is a fault vacuum pump

- Brooksville, FL, USA

At slow speeds and brake pedal requires immense force (~200lbs) to press and engage brakes. Significant grinding can be felt in the pedal. This often requires emergency brake usage to stop. Condition is intermittent. Occasionally happens in reverse occasionally forward with wheel turned or without.

- Sugarloaf Key, FL, USA

While backing slowly on a boat launch ramp, petal was depressed all the way and the tow vehicle did not stop immediately. Felt as though the petal was to the floor, vehicle rolled up to several feet before stopping. Towing roughly 6800 lb. Which is within specification limit for this specific vehicle.

- Twinsburg, OH, USA

Brake pedal randomly requires significantly higher pressure to slow/stop the vehicle, particularly at slow speeds. Has happened 2-3 times over the past year and this week is occurring more frequently; even daily.

- Edgewater, MD, USA

Loss of brakes at low speed, forward and reverse. Brake pedal gets stiff and brakes barely stop the truck.

- Dayton, OH, USA

All happened same day. Was 8 hours from home and pulling into parking spot and the brakes went to the floor 3 times. Has not occurred since. But when that happened the air started blowing warm and the service driver assist came on briefly. Still air is blowing warm and the service driver assist comes on. Have never had a check engine light come on. I am having it checked out this week.

- Panama City, FL, USA

Two different times being at low speed almost a roll. Went to apply brakes and truck barley stopped. Hard brake pedal, brake pedal to the floor. Once on a highway in extreme heavy traffic on a down hill. Second time rolling making a turn to park in a parking lot and almost struck police car and a gas pump.

- Wilmington, MA, USA

At low speeds braking is very hard can barely push in the brakes. Sometimes I have to use the emergency brake. Truck has 69,000 miles. At the brake place they said I had a bad vacuum for the brakes and is very common in this truck

- Greenville, SC, USA

The vacuum assist pump on my 2014 GMC Sierra went out suddenly during my morning commute. The brake pedal became very firm and the brakes were unresponsive. If I had been driving in an congested area an accident would likely occur.

- Ann Arbor, MI, USA