The contact owns a 2015 Chevrolet Suburban. While approaching a stop light and depressing the brake pedal, it failed to stop the vehicle. The contact had to apply excessive force to stop the vehicle. As a result, the contact rear ended a cement vehicle. There was no warning indicator illuminated. There were no injuries. A police report was not filed. The vehicle was able to be driven and was taken to an independent mechanic where it was diagnosed that the vacuum pump needed to be replaced. The contact stated that the vehicle previously experienced brake failure. The contact called classic Chevrolet Buick GMC of cleburne (located at 822-walter P. holiday drive, cleburne, tx 76033, (817) 402-3167) and was informed that they would cover the vehicle at 70 miles. The vehicle was not taken to a dealer and was not repaired. The manufacturer was notified of the failure and informed the contact to take the vehicle to a dealer. No further assistance was offered. The approximate failure mileage was 106,000.

- Alvarado, TX, USA

Vacuum pump for a brake booster failure

- Atlanta, GA, USA

While traveling straight on the highway last March in warm, dry conditions, the brakes become extremely difficult to push down, resulting in dramatically reduced stopping ability. I could not push the brake pedal down no matter how hard I tried. We had to move over to the shoulder of the road and slow gradually to avoid hitting vehicles in front of us. $1,000 repair required for vacuum system. Not covered by warranty. Dealer denied this was a common problem.

- Brighton, MI, USA

Brakes must be pushed extremely hard to stop the vehicle. Vacuum pump for brake system is faulty. GM will not cover or warranty as the bumper to bumper warranty has expired. Braking issue has nearly resulted in collisions. Called murdock Chevrolet on April 24, 2019, but they stated they were not aware of any recalls or service bulletins related to the pump or brakes.

- North Salt Lake, UT, USA

At low speed (backing into a parking spot on the street) the brake pedal got very hard and the vehicle would barely stop. I then did not go into that space to avoid hitting the car behind me. I pulled into a parking lot across the street. When backing in, I could not stop (moving with car at idle engine speed). The hitch hit the concrete wall-happily no damage done. With research, I find this is a common problem that GM has not addressed. I usually occurs at slow speeds or stop and go slow speed traffic. This is unpredictable and very unsafe. The vehicle is a 2015 with only 35,000 miles. The vacuum pump (the failure) is bolted to the engine and engine-driven and lubricated by engine oil which puts my engine at risk. Yet none of this is covered by the power train warranty. This is not a slow, but a sudden failure item. Very unsafe if it happens in school parking lot picking up my children, church, close spaces (neighborhoods, parking areas).

- North Canton, OH, USA

While in line at toll booth at low speed the brakes were hard to push and slower to respond almost causing accident. Dealer found vacumn pump failed and oil backed up into vacumn booster and master cylinders.

- Deridder, LA, USA

Vehicle is 2015 Chevrolet Suburban purchased new in December 2015. Build date was July 2015. Current mileage ~51,000. Vehicle condition = pampered. There are no warning lamps illuminated now or at time of incident. At low speeds (~10 mph), brake pedal can become excessively firm, and even with extreme pressure applied, brakes fail to stop the vehicle effectively. I am 6'3" and 220lbs, and yesterday, it took all my effort to keep vehicle from rolling into vehicle in front of me while idling thru drive thru. I'm rarely scared driving a vehicle, but this was scary. If a pedestrian would have walked in front on the vehicle, I would not have been able to stop. Pushing with my maximum effort, Suburban took several feet to stop from an idle crawl speed. When this occurs, pedal feels "hard" and has almost no stroke. Hard pedal / compromised brakes lasted ~4 minutes before condition "corrected" itself. This occurred 4/19/2019. I've driven vehicles without power brakes (by design). Effort required to stop Suburban with this condition is multiple times higher than those vehicles. Is GM doing anything about this brake system failure? at parking lot speeds where this occurs, someone could be killed due to this failure.

- Ann Arbor, MI, USA

Took vehicle to dealer to find source of loud tapping noise. Dealer said it was an unusually noisy brake vacuum booster, but was operating normally. 3 days later, as I rolled into a drive through, the brake pedal became very hard and the vehicle was very hard to stop. I am able to replicate the problem with consistency. At low engine speed, the brakes become hard to push after 4 or 5 pedal applications. The power booster is not getting enough vacuum at low engine speeds to maintain safe braking pressures.

- Vancouver, WA, USA

Loss of brakes at low speeds.

- Rexburg, ID, USA

The bake pedal become hard, and the brake distance is dangerously increased.

- Bal Harbour, FL, USA

Vacuum pump failure. The issue is presented when the vehicle is driving at low speed and the brake pedal is pressed 3 or 4 times in a short period after that pedal goes all the way down and stop the car is close to impossible. Lou bachrodt Chevrolet - coconut creek representative told me that that's the way this kind of truck work and I need to learn how to drive that truck.

- Parkland, FL, USA

Water leak inside cabin. Water build up in driver side floor board, either coming from on star/shark fin antenna, can trace water leak up under the dashboard to where all the electrical wirings are. Lost on star and gps service due to this. Random dash light and interior light flickering. Two incidents so far where vehicle shuts off while driving. One on nearby street and other on the highway. Lost steering and braking ability. No electricity so could not turn on hazard lights to alert other drivers around me.

- Killeen, TX, USA

At times, it is very difficult to brake the vehicle. It requires an increased effort to depress the brake pedal at low speeds. This is similar to an investigation that is on going regarding a failing vacuum pump for gmm model vehicles.

- Port Orchard, WA, USA

I experienced break failure at low speeds, most significantly at low RPM. When I tried to apply the brakes the pedal locked and I heard a grinding/clicking sound and was not able to push the pedal down. I experience this most when on a surface with a decline. Also when I switch the car from park to drive the car jolted forward when I took the pressure off the break. The feeling was very similar to the feeling you get when you apply heavy pressure to the breaks and you kind of fly forward. Chevrolet confirmed a leak in the vacuum pump. The vehicle has 53,000 miles. It is no longer covered under warranty. It is a very scary feeling not to have breaks. I hope General Motors issues a recall to protect consumers.

- Virginia Beach, VA, USA

The brakes have lost braking pressure three times. After first incident, the brakes were checked and there was no issue found. This occurred on the interstate in moderate speed stop and go traffic. I could have rear ended someone but I was able to pull onto the shoulder of the highway. The second time I had to move my car from one space to another. The car would not stop and I nearly struck a house. Again the brakes were determined to be fine. The third time, I was attempting to park my vehicle when the brakes failed to stop my car. Thankfully I was pulling into an end parking space and the curb stopped me from striking another automobile. GM knows there is an issue as there are numerous complaints. The first time this occurred was in August. It occurred again in January 2019.

- Kingstree, SC, USA

I can't stop my car driving 3 mp I can stop my car driving at low speed is very difficult to stop, when I pres the break at low speed I hear and feel a noise in the break pedal, I hit a car when I was trying to park my car near my house is very unsafe please help

- New York Apt 2m, NY, USA

I have the same problem with my 2015 Suburban. Brake pedal gets hard at very slow speed usually around gas station. This has shown up as over 150 complaints on the same model it must be a recall. Has happened 5 times.

- Houston, TX, USA

While driving the vehicle at highway speeds northbound on the fl turnpike, the brake pedal became very rigid and would not allow me to press the brake pedal down as usual. Furthermore, I had to apply a tremendous amount of pressure on the brake pedal to engage any sort of braking whatsoever. In a split second, I had to pull to the shoulder of the highway and continue applying very hard pressure on the brake pedal until the vehicle finally came to a full stop. I turned the vehicle off, started it again, tried coasting and stopping the vehicle and the brake pedal continued to be very difficult to press and would not engage and provide normal braking pressure. I then had the vehicle towed to the nearest Chevrolet dealership and they diagnosed the issue as being a bad pump impacting the master brake cylinder. Parts are supposedly on back order with no timeframe given as to the repair.

- Palm City, FL, USA

Driving at low speeds the braking systems fails to stop the vehicle. This almost caused us to strike a parked vehicle in a parking lot. The dealership stated the brake vacuum pump has a leak and/or is faulty.

- Anderson, TX, USA

The contact owns a 2015 Chevrolet Suburban. While attempting to reverse out of a parking space, the brake pedal became stiff when depressed and the vehicle would not stop. The contact stated that the failure occurred sporadically for three weeks. The vehicle was not taken to the dealer for diagnostic testing. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 65,000.

- Greenacres, FL, USA