Lose brake assist(?) upon sitting with foot on brake @ stop light/parking lot. Pedal becomes hard and will not stop. Has not happened @ speed. Had repaired, said was vacuum pump malfunction-$600. Have read of other reported malfunctions of same style.

- Garland, TX, USA

I was driving in stop and go traffic on the highway at low speeds. When I applied the brakes, the pedal was very stiff and I had to use excessive force on the brake pedal to stop the vehicle. I almost hit car in front of me. Chevrolet dealer diagnosed a bad vacuum pump and replaced it under warranty. This malfunction is a serious safety issue.

- Rochester, NY, USA

Brake pedal very stiff with little to no braking power. Happens at low speed both in forward and reverse. Already had vacuum pump replaced on 01/25/2019. Same issue again on 01/29/19. Taking back to mechanic.

- Wetumpka, AL, USA

Same problems others are having with breaking, breaks get hard and go to floor, when trying to park or backing up to a parking space. Not sure why there is no recall for this issue it's a big safety concern.

- Santa Fe, NM, USA

Brakes became incredibly hard and almost did not stop my truck three times now. Finally, this last time the service brake assist light came on. I have previously taken my truck to the dealer twice and they saw nothing wrong with it. I am hoping they will now that the warning came on. I have come very close to hitting other cars because of this and hope it can be fixed. This happened every time as I was parking my truck at very slow speeds (thankfully).

- Side Lake, MN, USA

At low speeds the btaking system is extremely hard to engage and creates a need for an umexpected longer stop distance/time. This is an extreme hazard and can easily cause an in incident and possible injiury/fatality. It gives a 'brake assist error'when this occurs.

- San Angelo, TX, USA

I was backing out of my driveway when I tried stopping to shift into drive I pressed brake pedal and truck kept going almost hitting a parked car I felt a vibration in brake pedal and it felt hard to press truck has about 29K miles

- Santa Ana, CA, USA

During slow traffic situation brake pedal becomes extremely hard and difficult to depress with loss of braking to the point of almost causing an accident.

- Graceville, FL, USA

The brakes become hard and resist depression, or require an increased effort to depress the brake pedal but with no stopping ability, if you tap or press the break. Example in traffic or reversing out the driveway.this seems to happen at 20 mph or less. I did have an issue the other day when I had to slam on the brakes, pressing the brake all the way which hard to do and made all kinds of noises. This has been going on since 2017.

- Cypress, TX, USA

Lose power braking ability in stop and go traffic and at slow speeds. Two pedal depressions and brakes become virtually unusable. Suspect faulty brake vacuum.

- Glendora, CA, USA

While driving at slow speeds such as parking or backing up, I frequently experience a very firm or hard brake pedal. This results in very little braking ability. The problem is beginning to become noticeable while driving in traffic which leads me to believe the problem may be getting worse. I have taken my vehicle to a maintenance shop where it was diagnosed as needing a vacuum pump for the brake system. The parts needed for the repair are on backorder and it is not known how long this may take. Due to the problem becoming more frequent I am currently not driving my vehicle until repairs can be made.

- Springfield, MO, USA

The brakes became really hard to press and I almost crashed into my garage. This seems to only happen at slow speeds but is getting worse. The "service brake assist" light came on. It is believed to be a failure in the vacuum pump.

- Otsego, MN, USA

Vacuum pump is leaking. When I push brakes it gets hard and truck doesn't want to stop when I push brakes. I've already had brakes replaced and it still occurs and I also took it to dealership and they said it was vacuum pump. Motion, street, highway, braking

- Spring, TX, USA

When driving 2016 Silverado 1500, I put on brake and lost power to steering. Dealership said there was no recall. Other time when touching the brake, lights got brighter on touch pad for radio and for over 200 miles while someone was in passenger seat, it said passenger airbag was off. While turning and applying brake, loose all steering. It happens while driving. Not sitting still. First time it happened, 8 2as turning in the driveway and lost all power and had to slam on the brakes 2 times to avoid going into the ditch

- Porter, TX, USA

While in stop and go traffic, the vehicle's brakes will not engage when they need to in order for the vehicle to stop correctly. This happens most times when vehicle has just let off the brake to then once again brake quickly, and the driver will need to push the brake all the way to the floor in order to engage proper braking. This does not happen all the time, but when it does, it is in stop and go traffic, or while the driver is in a drive thru, for example at the bank. The type of road conditions have no affect to this, it has happened on sunny days where the pavement is dry and rainy days. It has also happened when the vehicle is coming to a stop while in a down hill position with on coming traffic.

- Waynesville, MO, USA

Leaving a chiefs game in Kansas City I was waiting in traffic. We slowly moved forward and my brake pedal went to the floor and would not stop the vehicle I ran into the truck in front of me. There was no damage to his bumper but I got a dent the size of a baseball. Later on the way home I relised that it was still doing in at low rpms so I took it to the dealership amd they said my vacume pump was going out!! at 45000 miles"??" the mechanic said it was a very common problem.

- Grove, OK, USA

Recently purchased a 2016 Chevy Silverado in May 2018, and had 17,000 miles on it, in July 2018 noticed the brakes were hard to mash and pulsating while driving; it's not doing it all the time, off and on. Need to know if this a recall issue and what to do?

- Chinquapin, NC, USA

The brakes build up pressure when pushed multiple times causing the brakes to not engage and properly stop the vehicle. They get so tight you have to put all weight and force possible in them to stop. I've called multiple dealerships and even called GM directly and after investigation they say they could not simulate the issue and its not a known issue. I have found numerous reports on this and it was very easy to find as a known issue amongst GM owners.

- Fort Worth, TX, USA

Brake pedal gets extremely hard and feels like maybe ABS tries to activate at times. Usually after pushing brake pedal a couple times in traffic or parking lots. I've almost driven into other vehicles and a building while pulling into a parking spot now several times. Today while coasting downhill toward a stop light I almost couldn't stop at the light! the truck, a 2016 Silverado only has 57K miles on it. Hopefully the power train warranty will cover whatever is going on. I'm calling the dealership first thing in the morning

- Claremore, OK, USA

Vehicle loses most to all of the pressure in the brake pedal at slower speeds or if coasting (foot off the accelerator) for short periods. Braking becomes extremely difficult and stopping distance drastically increases. Service brakes message comes on while in traffic as well, but only as a service notice, not a warning. This as been on going since January 2017, but has gotten dramatically worse over the past several months. This happens when driving through city's in traffic and parking lots at slow speed. No accident to report, but too many near misses to count. Yesterday was the latest event. On the interstate, in traffic traveling 0-15 mph, it took a solid 5 feet or more to stop the vehicle from 10 mph to zero while pressing the brake pedal with both feet. I was not towing anything and the vehicle was only loaded with 5 passengers and a small amount of luggage. Roads were dry and the temperature was roughly 60 degrees F. please contact me if you need more information or other events.

- Valdosta, GA, USA