I was driveing the vehical pulling a boat on a trailer coming up to a stop sign, I then went to press the brake and the pedal was hard and the truck wouldnt stop. It was very difficult to press the brake and if my wife had been driving im not sure she would have had the stregth to press the brake and stop the truck. This is a very dangerous issue. Took the truck to the dealer and they said that the vacumm pump had failed and needed to be replace along with the vacumm hoses and the brake booster. The dealer wanted $1400 to replace these components on a two year old truck. I replaced all the components with factory parts.

- Gloucester, VA, USA

Brakes barely work at low speed and require a lot of pressure to get the vehicle to stop. Nearly backed my truck into a lake while backing down a boat launch. Very dangerous! there are so may complaints on this issue and the NHTSA has been "investigating" it for over 6 months now. When will something be done?

- Portage, MI, USA

Unresponsive brakes at low speed. Very dangerous and not sure why this isnt a recall. How many people have to get injured or die before its fixed?

- Clermont, FL, USA

The brakes went stiff and my wife was barely able to get the truck to stop. This was luckily just backing out of our drive way. It could have been really bad if she was going faster or needed to stop quick.

- Santaquin, UT, USA

When applied brake pedal was very difficult to push down and brakes did not function properly. Vehicle was in motion on a city street at time of incident. Took to Chevrolet dealership and they told me it was a bad brake booster and that they have had a lot of trouble with them.

- Nevada, MO, USA

On the date cited, I was backing up a trailer down a hill slowly. Had released the brakes then reapplied and suddenly the brake pedal was stiff and it was very hard to stop. Manually applied full strength trailer brakes and the trailer helped stop the truck. 3 days later (5/30/19) I experienced a similar incident. I was parked, put the truck in drive accidentally and took my foot off the brake. When I applied the brake again quickly to switch to reverse, the pedal was extremely stiff. Nearly hit the vehicle in front of me. Put into reverse and no issue. At no point was a "service brake assist" message displayed as noted in a 'special warranty' letter received from GM in the mail between the incidents. No other error codes or messages were displayed. 2 years ago after having towed a trailer, the message "service brake assist" was displayed on the screen once, the local service dealer pulled codes and did not perform any repair.

- Cedar Rapids, IA, USA

April 2019 letter from GM saying my brakes could possibly loose their vacuum assist. They do not want to fix the problem unless I have problems and extended the warranty to 6 years and 72,000. What a cop out, what if my brakes do not work properly in a tight stopping situation? I have attached a copy of the letter, please do not let GM play with our safety on a $52,000 vehicle or any vehicle.

- Forsyth, GA, USA

Vacuum pump failed suddenly, almost had a collision due to very hard braking. The vehicle is currently at the dealer for repairs ($2,100 including new brakes). I don't have any documentation yet.

- Lyme, CT, USA

Lose braking power on the 2nd application at a low speed. Had an accident trying to slow down coming to an intersection due to low to no stopping power.

- Cedar Hill, TX, USA

Brake paddle will sometimes go hard on a second application most notably when going slow as if the power brake part of the system is not working, still have a good paddle but almost no stopping power. Looking for a recall, not found.

- Grand Valley Ontario Canada, FL, USA

2016 Silverado crew cab, 3rd one I have purchased from this dealership. In December of 2018, with 57094 miles on it, the truck had a power brake failure while being parked. Took the truck to the local dealer who said it was not under warranty. Passed on having the worked done there and brought it to my local repair shop where they diagnosed it as a problem with the power brake booster pump. The bill came to $384.33, which I paid with a credit card. On May 7th, 2019, I received notification from GM that there was a problem with the brake booster pump on the 2016 Silverado. The letter instructed those who had a repair made already to submit the following information in order to receive partial/total reimbursement: -name and address of the person who paid for the repair. -the VIN number of the vehicle that was repaired. -description of the problem, the repair performed and who performed the repair. -the total cost of the repair expense that is being requested. -proof of payment for the repair in question and date of payment. I was able to gather all this information and present it to the dealer from whom I had purchase the truck. I was informed that the signed credit card receipt that was attached to the bill was not sufficient as proof of payment (works when I go to a restaurant). The dealer stated that GM requires a copy of my credit card bill for that time period. This means they would also have my credit card number, a list of every purchase I made in that time period. What payments I had made and any outstanding debt. I declined to give the dealer this information. Called GM customer service and worked up to the supervisor level and got the same response. The wanted my credit card statement. I told the supervisor that I thought the request was very intrusive and again, declined to provide it.

- Falls Village, CT, USA

Hard brake pedal at low RPM

- Cloverdale, CA, USA

Near brake failure at low speed like coming to a stop sign, garage door, etc. Very hard to push pedal. Almost hit several cars. Ticking noise in engine compartment.

- Deerfield Beach, FL, USA

During parking or in traffic, the brakes on this vehicle have a tendency to become very stiff and noisy requiring increased pressure to apply the brakes. The problem has caused several near-miss accidents and has become more frequent between occurrences. The problem was reported to the dealership in November of 2018, but because my appointment was later in the day, they asked if I could return another day to have the problem diagnosed. I had it diagnosed finally on May 4, 2019 which they did not elude to this being a frequently reported issue, nor that the issue has been ongoing since the previous year. The dealership stated that the repair would cost over $700 which I could not afford at the time. But then 4 days later I receive a letter (attached) in the mail, dated April 2019, that says that the brake issue was identified, but I would only qualify for the extended coverage if the problem was reported within 6 years of the purchase date or 72,000 miles, whichever was first. At the time the issue was diagnosed, the milage on the vehicle was 73,265, conveniently just outside the range of the milage identified in the letter. If GM was familiar with this issue in 2018, why send this letter out immediately following my diagnosis, where I was allowed zero opportunities to have the problem repaired" were all the other vehicle owners who experienced the problem given the same milage and year restrictions as me? also, how is it that a braking problem which has been know to cause accidents and injuries allowed to persist up until there is a severe problem, potentially resulting in a fatality before a recall is justified" there are moral concerns with this on addition to the general safety concerns.

- Stone Mountain, GA, USA

The contact owns a 2016 Silverado 1500. The contact stated that while driving at approximately 25 mph, the vehicle crashed into the rear of another vehicle. The contact indicated that when depressing the brake pedal to avoid the collision the message "service brake assist" had displayed and the brake pedal was hard while depressed. No injuries were reported. A police report was taken at the scene and the vehicle was towed away. The cause of the failure was not yet determined. The manufacturer was notified of the failure. The local dealer was not contacted regarding the failure. The failure mileage was 81,000.

- Carthage, NY, USA

Hard brake pedal and near complete brake failure at low speeds due to faulty vacuum pump for brake booster. Vacuum pump unable to provide enough vacuum to brake booster causing very hard pedal at low speeds and stop and go traffic. Vehicle is well maintained with approx 52,500 miles

- Damascus, MD, USA

When moving slowly brake pedal becomes hard to push making it difficult to stop in position of drive up window or parking.

- Appleton, WI, USA

Suddenly in early November, when I pulled into a parking lot or into the driveway in my home the brake pedal on the truck would suddenly become hard and incompressible. I nearly hit other vehicles and pedestrians because I couldn't brake at low speeds. I took it to the shop and was told the vacuum pump was not working properly and needed to be replaced.

- Arlington, TX, USA

When driving slow the brake booster doesnt seem to work, unless you press on the gas. When reversing slowly brakes go out. When stuck in traffic bumper to bumper and driving slow the brakes seem to not work unless you press on the gas. The first time it happened was in December 2017 and its starting to happen again.

- Dallas, TX, USA

Loss of brakes at low speeds

- Liverpool, NY, USA