Multiple times at low speeds, usually parking or in stop and go traffic, I lose all braking power. It's terrifying when it happens. I have to put my full body weight (I'm a 200lb male) on the brake pedal and I mean I barely can bring it to a stop. Luckily I haven't hit anything in the time it took from the first occurrence of the problem until I could afford to get it fixed. The problem was figured out to be a bad vacuum pump. From what I can tell online, this seems to be a very widespread issue with not many owners reporting their problems. This is very dangerous, I couldn't imagine that happening at high speed, as reported by others. It's almost impossible to stop the vehicle when the brakes do that. Just trying to help prevent serious accidents.

- Sammamish, WA, USA

I have a 2015 1500 Silverado and it is having brake issues. The peddle becomes hard to depress and the truck will not come to a stop. I have noticed this several times coming to a stop at low idle on the street. I dropped it off at the dealership only for them to tell me it would be $1100 and GM did not have a recall on it. They said the vacuum pump and several other things would need to be replaced in order to fix this.

- Chesapeake, VA, USA

At low speeds, the brake pedal becomes very stiff. It is hard to stop vehicle. It happens in forward and reverse.

- Vandergrift, PA, USA

2015 Chevrolet Silverado 1500. Consumer writes in regards to power steering. The consumer stated ABS system and stabilitrak light illuminated. The consumer was made aware of a recall concerning the steering failure after having the vehicle repaired. The consumer requested to be reimbursed for the repairs.

- Awendaw, SC, USA

I unerstand that you are already investigating the braking braking problem at slow speeds, I have been experiencing the same problem for some time, can you please add me to your complaint list, and keep me informed of any results, thanks (xxxxx) parts of this document have been redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6)

- Spring Lake, NJ, USA

Vacuum pump for brake system and hose/tube that connects to the pump had to be replaced after I lost brakes completely while driving the vehicle with my two year old daughter in the back seat!! the vehicle had to be towed to auto repair shop. Mileage was at 55,096. This happened while in a drive thru line at chic fila. Brakes got very hard and I just kept rolling into vehicle in front to me. I stopped rolling just short of hitting the vehicle. I slowly went through the line to park the vehicle in the parking lot and the brakes were completely rock hard the entire time. I had to simply roll to get where I needed to park slowly.

- Conroe, TX, USA

Whenevr I back the truck up at slow speeds, the brakes temporarily fail for approximately 1-3 feet. Coming to a stop at slow speeds can also cause the truck to take extra distance to stop. I have changed to new brake pads, turned the rotors, and purchased new tires. The truck bounces severely when traveling at speeds over 50 mph on concrete roads. Only on concrete. Asphalt has normal ride as soon as the road transitions then the truck bounces.

- Colorado Springs, CO, USA

Purchased used 2015 Silverado ltz with 87K miles on 12/1/2018 from dealer. On 12/2/2018 while backing out of parking space for first time, brake pedal would only move 1/4 inch with great effort (80-100lbs effort), and only applied enough braking force to stop truck moving 2 mph over 5 or 6 feet. Was able to immediately recreate problem moving forward while under 5-6mph, each time taking roughly 10-12 feet to stop with great braking effort. Problem occurred again 12/3 after a short trip (3 miles, 40mph) while slowly backing into parking space. Put truck in drive and the brake problem persisted. Backed up again, problem persisted. Maximum braking force would not stop truck from rolling down 7% grade from dead stop. Maximum braking force will absolutely not stop truck in stop-and-go traffic when this problem occurs again. **** must drive in far right or left lane to ensure space to swerve into when brakes fail to avoid collision. **** extreme safety hazard - will cause accidents, injuries & property damage. This needs to be a recall asap.

- Charlotte, NC, USA

I was pulling into a parking spot and when pressing the brake pedal to stop it got really hard, had no brake pressure to stop, thankfully I had no concrete barriers or light posts in front of me to cause any damage just grass on a hill to help me stop. Second time this happened I was backing up to my garage that was on a slight hill and the brakes got hard but I was able to stop by putting the truck in park and using my emergency brake. Third time I was driving down the highway going approximately 65mph as I was slowing down to get off of an exit I noticed my brake started to get hard thank goodness I have a tow haul botton and I used that to help me slow down to get off the exit. Everytime my brakes have gotten hard is when I have to back down a hill, pull down a hill, park in a parking spot or have to press the brakes constantly to slow down.

- Sykesville, MD, USA

Breaking system vacuum pump failure. Common and known problem. Brakes sporadically require substantially more effort to slow vehicle and increases breaking distance significant with no warning. Increases likelihood of crashes. Mine failed while driving 30 miles an hour on an exit ramp almost causing a collision. GM refuses to cover this under warranty and despite knowing that this is a common problem, has not issued a recall.

- Falls Church, VA, USA

Brakes become extremely hard and have to push down with big feet to stop.

- Hutto, TX, USA

Brake peddle randomly becomes hard to push and will not stop the vehicle after otherwise normal functioning. This occurs generally at low speeds in forward and reverse. This has occurred on numerous occassions but randomly

- Huntington, WV, USA

Brake pedal in the truck will occasionally go to the floor when the truck is in reverse. The problem seems to happen more when backing a boat trailer down a ramp at a boat launch where the truck is at an angle. Have lost brakes multiple times when doing that. Fluid is full in the reservoir and the mechanical portion (brake pads, rotors, calipers) checked out as fine.

- Bloomington, MN, USA

Was pulling into a parking stall slowly and truck would not stop when applying the brake pedal. Brake pedal was very hard to press and used both feet to press on the pedal to eventually make the truck come to a stop. Caused a minor (cosmetic) scrape on passenger side front bumper (scraped concrete wall) due to the inability to stop when brake were being pressed.

- La Puente, CA, USA

Brakes failed exactly as described in Nov 26 consumer report article and exactly as currently being investigated by NHTSA. Brakes failed while in motion at our local transfer station (dump) while turning - backing up and pulling forward. Brakes failed when the trucks RPM fell below 800 RPM and the vacuum assist failed. The vehicle was difficult to stop and I am a large man. Have copy of repair bill from dealer dated 10/03/18. Dealer was familiar with the issues and had serviced other Chevrolet vehicles with the same problem. Contacted Chevrolet div/GM. Made a call, send and -mail and wrote a letter. No response to letter or E-mail asking for a refund. Received a call in response to my call. Chev rep stated they had no knowledge of the problem.?? told the caller than only need to check the internet to find many complaints. Consumer reports that only 111 complaints have been received. I strongly suggest there are many more. I suspect the number of complaints will increase not that the "cat is out of the bag" so to speak. Please insist on a recall I think it will save lives. No need to wait until someone dies.

- Madison, VA, USA

While driving on the highway approx 40 mph, traffic in front of me stopped suddenly and I applied as much force on the brake pedal as I was physically able to. The truck began slowing but not nearly fast enough and I collided with the vehicle in front of me. The brake performance seems to have declined over time and I was unable to stop in time to avoid the accident. There appeared to be plenty of room to stop but the truck did not perform as expected. I am reporting because I read an article regarding a probe into issues with the brakes on the year truck that I own. At the time I did not think too much about it but now I believe that this braking issue may have directly resulted in the collision.

- San Diego, CA, USA

I purchased my 2015 Silverado pre-owned with 2,000 miles in October 2016. In may of 2018 I was traveling through multiple states. I was stuck in slow traffic for multiple hours due to an accident on the highway. It was then that I first experienced an issue with my brakes. When moving at a very slow pace, the brakes seemed to lose the power assist. I took the truck in for it's oil service at castroville Chevrolet on 6/22/2018. I mentioned this issue to the service writer who was not aware of any issues with the Silverado brakes. At the time it was cost prohibitive for me to have it investigated and could not lose the vehicle for an extended time. It has happened multiple times since then, again only at very low speeds, such as parking. I have an appointment on 11/28/2018 with castroville Chevrolet to have it looked at. All of these incidents happened while in motion. I believed it to be a vacuum issue as it only happened at low speeds.

- Castroville, TX, USA

Loss of brakes 2 times once on interstate 40, and once on a hill in town..brakes went to floor.finely stoped.

- Monroe, TN, USA

I was driving at slow speed driving straight while parking my truck and the brakes became rock hard and could barely stop which I came inches from hitting the car in front of me. I was traveling under 5mph just coasting with my foot off the gas and when I hit the brake nothing was happening which I had to put a lot of force to just barely stop my truck in time. The dealership I visited told me the vacuum pump for the brakes was going out and replaced it since I have a 4 month old baby and need a reliable car. My truck only had around 50K miles on it and all the Chevy cars my family has owned have never had an issue with brake boosters or vacuum pumps. Apparently this is a common enough problem that Chevy has a bulletin for hard brake pedals during low speed. Running a search online for this issue comes back with many people having the same issue and quite a few having repeated repairs with the problem only recurring. The brakes are not just hard but pretty much non functional when this issue occurs and really is pretty scary when I am driving around my baby that this could happen again with no warning. For such a key component of vehicle safety, this issue really needs a close look and a recall to remedy this known defect. There is no reason this component should go out in a 3 year old truck.

- Henderson, NV, USA

Truck has become very hard to stop latley. Brake pads look new. Dealer says nothing is wrong. Almost rear ended multiple cars this month. Thinking of just trading it in on a Ram. Truck doesn't want to stop!!!

- Port Byron, NY, USA