In late December 2018, the brakes began to exhibit signs that they needed to be replaced. Before we could get the car to the dealership for a brake inspection in early January 2019 due to the holidays, the brakes actually totally failed to operate at slower speeds (below 30 mph). Even when "standing on the brake pedal" with both feet the vehicle would not stop. This happened several times especially at slow speeds while backing out of a driveway or going through a drive-thru. The "brake assist light" also came on during several of these events. Also, a "grinding" noise occurred. This may have been the anti-lock brake system activating. The vehicle is now at the Chevrolet dealership in our area waiting on repairs that we are concerned will not correct the problem and prevent it from occurring again. This concern is due to the fact, through our research, that there are pending lawsuits against GM and GM itself has issued several "service bulletins" addressing this issue, but will not initiate a recall of the affected vehicles. They won't even offer any reasonable solution to truly prevent future brake failure even after their recommended repairs are completed and paid for.

- Kirkwood, MO, USA

Hi there ; brake vaccum pump defected ; once going in slow traffic, stop an go, or even backing, brake pedal goes hard and low, SUV do not stop and you have to really press brake ! and than still going, very dangreous ! there should be a saftey recall on all 2015, 2016, 2017 Suburban. It could be in city streets, my drive way, any slow drive back or forth

- Woodbridge Township, NJ, USA

While parking the vehicle at a slow speed the brakes became extremely hard to push and the vehicle barely came to a stop. This has happened multiple times in the past few months. When we had it checked by the dealership they said they couldn't find anything wrong.

- Sulphur, LA, USA

Intermittent hard brake pedal and no brakes driving slow speeds in stop-and-go traffic on I70 driving downhill out of the mountains toward denver, co.

- Sedalia, MO, USA

Brake pump assist while backing up in a parking lot and almost struck another vehicle. Vehicle brakes operated normally going home and failed again while backing into my garage. I had to apply heavy pressure while braking both times. Only 65K miles

- Fredericksburg, VA, USA

I have and many instants of not being able to stop in time or push down as hard as I can for brakes to work. Felt like nothing worked. Scared the hell out of me. Driving a Suburban any no brakes really could hurt or kill someone. Not safe. I brought in to the Suburban dealer where I bought it. They replaced the brake vacuum pump. This should not have happened this early to be replaced! this happened to me several times in cities streets where I literally kept pumping the brakes to stop. It is a helpless feeling I have the bill that I paid for this ervice to have the brake pump replaced. Very expense

- Minnetonka, MN, USA

The contact owns a 2015 Chevrolet Suburban. While driving various speeds, the brakes failed and the contact had to depress the brake pedal all the way to the floorboard to stop the vehicle. The vehicle was taken to stonebriar Chevrolet (9950 T-121, frisco, tx 75035, 214-446-7880) where it was diagnosed that the vacuum pump fractured. The vehicle was not repaired. The manufacturer was notified of the failure and stated that nothing could be done. The failure mileage was approximately 55,768.

- Mckinney, TX, USA

The brakes temporarily fail when applying the brake pedal. The failure is momentarily and happens when the vehicle is at a compete stop as well as at higher speeds. The brake pedal is soft with little to no resistance and will go to the floor and then it will immediately pressurize and it feels like the antilock brakes are actuating. This has happened multiple times in a drive thru and also when approaching a stop at higher speeds. Have had the brake system inspected twice and no problems can be found.

- Hamilton, IN, USA

I loose braking when going slow in reverse. The break peddle becomes hard and the vehicle will not stop. This has happened many times and only in reverse. The dealer said it is a known problem but wants $850 to replace the booster. They said GM may reimburse me sometime in the future. I do not have $850 and should not have this problem with a vehicle with less the 60,000 miles on it.

- Linden, MI, USA

Our vehicle did not brake properly on several occasions. Luckily my wife was able to hit the emergency brake so she didn't go through the front of her work. The garage ended up replacing the vacuum pump as it was failing.

- Berlin Heights, OH, USA

When driving at low speeds, I.e. in rolling traffic, or in line at a drive up window or car wash, all brake power is lost. Only way to get it back is to get RPM's back up high again. Seems to strengthen the vacuum back to normal. I would have to put the truck in neutral and hit gas, then go back to drive, and brakes would work well again. Within another hit or two of the brakes, problem will come back. It has happened over the last 2+ years, many many times. At least 25-30 times.

- Rowley, MA, USA

On three (3) occasions, over a period fo a few weeks, at low speeds or when stopped, the vehicle has demonstrated degraded stopping power while the brake pedal seemed very difficult to depress. After the final occasion, which narrowly averted a low speed collision, an instrument panel annunciator warning to service brake assist was displayed. The vehicle has not been used subsequently. If this report was submitted multiple times, it was because it appeared to be rejected, citing "an error occurred while processing your request." "reference #30.CD896783.1543450729.60A7C40"

- Springfield, VA, USA

I was in car line at my children's school with my children in the car when my 2015 Suburban began to have extreme braking issues. The brake pedal became very hard to depress and would still allow the vehicle to move forward no matter how hard I depressed the brake pedal. I had to use the emergency brake and place the car into park. When I had the vehicle taken to the Chevy dealership they indicated it was the brake vacuum pump which was almost $1,000 to repair. The car has 45K miles and there was zero early warning to indicate a brake issue. This is highly alarming and dangerous especially if someone did not know to use the emergency brake to assist in stopping a heavy vehicle

- Germantown, TN, USA

Over the weekend my husband was parking our 2015 Suburban with approximately 60K miles on it. When he began pulling into a space and depressed the brake pedal the car did not properly respond and slid. It did eventually stop once he stepped very hard on the brake pedal however it was several feet in front of the desired parking location. Fortunately there was not a car in the spot in front of us. He proceeded to turn the car off and back on again and it appeared to be working until a few minutes later he was driving at a low speed through an intersection when it happened again. Since we had our children in the car, we drove immediately to the dealership and after a diagnosis multiple days later, I was told it was due to the vacuum pump failing, an $850+ repair which was not covered under warranty. After searching I found that this is a common problem with these vehicles which I was not aware of. The part has been replaced with a new upgraded part which should not fail indicating that there was an issue with the original pump. GM is not acknowledging the problem with these pumps and I worry is going to wait for a serious accident to occur before they do anything about it. Spoke with GM customer service and they are not willing to acknowledge the issue. These cars need to be recalled before someone is seriously injured.

- Newtown, CT, USA

The brakes became extremely difficult to depress and requires both feet to depress. Even with both feet on the brake pedal, it felt like the truck was not slowing properly. This happened when the engine was at or near idle in a parking lot. After turning vehicle off and the brake pedal did not respond as expected. After increasing the rpms the brakes responded as expected. I was unable to reproduce the issue for the dealer.

- Medina, OH, USA

The 15 Chevrolet Suburban has a problem with the power brakes. The brake pedal gets hard and the vehicle will not stop at low speed, backing up or going forward. In one instance I had to use the transmission and the parking brake to stop the vehicle. When depressing the brake at low speed it loses pressure and becomes stiff - hampering the braking power of the vehicle, making it unsafe to drive my family- with my in the vehicle.

- Bethesda, MD, USA

While driving down slight hill in stop and go off-ramp traffic, the brakes become very hard to push and car does not come to a complete stop. This situation also occurred a few times in the past.

- Chester Springs, PA, USA

Air conditioner went out unexpectedly this week. Front seat usb charging ports went out as well. A few days later I attempted to stop the car by breaking but the brakes would not engage. The pedal felt very hard as if pressure was acting against the cars ability to brake and stop. I had to push down with all my force to keep the car from crashing into another car on 1-95 in Florida. This occurred on November 21st. I was able to manage to get the car back home after traveling for the holiday but the brake failure occurred a dozen more times on both the interstate, surface roads and parking lots by the time we got the car home. The brake assist notification also showed up on the display panel. My family could have been seriously injured or killed! this car is only 3 years old and is not driven that frequently. No reason I should be having these issues. Dealer thinks it is the vacuum pump. Having diagnosed.

- Norcross, GA, USA

The brakes on my 2015 Chevrolet Suburban are intermittently difficult to depress. The first time this condition was noticed was in July of 2018 while launching my boat. I was backing the vehicle down the boat ramp, the brake peddle was extremely hard to depress. I had to use two feet to depress the peddle far enough to stop before backing into the water. Additionally, when braking while going down the road the brake peddle is occasionally difficult to depress.

- Hudsonville, MI, USA

Vacuum pump failing and the vehicle will not stop in motion. This has happened several times in both drive and reverse and yesterday was the scariest when the vehicle wouldn't stop on a hill in reverse.

- Plano, IL, USA