Driving in heavy traffic at slow speeds when I applied the brakes to stop, the vehicle continued to move. Brake pedal became hard to depress and with more pressure the vehicle began to slow. The problem happened again while baking up out of a parking stall, the brake became very difficult to depress, with the vehicle stopping after pressing the brake pedal with force.

- Sun City West, AZ, USA

On two occasions while driving at slow speeds in stop and go traffic the brakes did not work properly causing the stopping distance to dramatically increase. As a result I narrowly missed striking other vehicles on multiple occasions. The average driving speed was under approximately 5 mph. In order for the brakes to stop the vehicle the brake pedal needs to be depressed with maximum pressure all the way to the floor. A noise can also be heard which I believed is the ABS. Brake fluid level is not low and no obvious break line leaks were detected. Brakes appaear to function properly at normal highway and driving speeds.

- Oceanview, NJ, USA

I had just gotten home after visiting my parents which is approximately 100 miles (1 hour and 45 minutes) away from my house and I had no issues on the highway with my brakes. The drive was mostly all highway with an average speed limit of 65 and 75 mph. I went to park my truck at my house in which I back into my parking spot at home. When I went to stop, my truck's brakes worked properly but when I put it in reverse to back into the spot, that is when I went to go break, the brakes needed more force applied to the pedal in order to stop the vehicle. I then put my truck into drive to see if the problem was only when the vehicle was in reverse or all the time. I drove it a few feet forwards and back a few times and the problem persisted. General Motors has issued a document (pit5361D) regarding this issue but has not issued a recall. A new vacuum pump was installed by the dealer which resolved the issue but was not covered under warranty.

- Richmond, TX, USA

Backing into a parking spot today at low speed (less than 5 mph) the brake pedal became stiff as a board and would not budge when pressed and the truck would not stop. My truck rolled back into a cluster of bushes and finally stopped. This is a widespread and dangerous issue. A recall needs to take place asap! all of my internet research shows that this is a faulty vaccuum that controls the breaks that fails at low speeds. There have been multiple accidents and very close calls. GM needs to be held accountable for this.

- Atlanta, GA, USA

At slow speeds my brakes are not working, I notice it most when trying to park. It happens sometimes but not always.

- Windfall, IN, USA

Brakes fail to stop at slow speeds ( trying to park or in a drive thru) despite pushing brakes pedal to floor, brake pads are fine started at 34,000 miles now have 52,000 has happened randomly. Chevy states nothing wrong with brakes. However hitting the car in front of me says differently because it wouldn't come to stop lucky was barely moving. Huge safety issue not being resolved.

- Cypress, CA, USA

While driving in stop and go traffic on a city street moving straight forward and inching the brakes to move with the traffic flow I noticed that the brake pedal got very hard and the vehicle was continuing to move forward even though I had all my weight pushing on the brake pedal lifting myself off my seat this happened 3 times before I was able to reach adequate parking. I have taken the vehicle to a certified GM service shop and after inspection they instructed me that I would need to replace the brake system vacuum pump, the brake booster, brake master cylinder and the tubing connecting the items. Resulting in a $1170 repair and the service rep also stated that this would take care of the issue but cautioned the oil and filter changes needs to be maintained according to the manufacturers standards. I have owned this vehicle about fifteen days as of this writing I did by it from a dealer whom said he was unaware of this issue. Why is the NHTSA or whom ever continuing to let the dealers sell theses vehicles with a known safety problem without addressing the proper repairs stated in the tsb pit5361B that GM has sent out to there service centers. Serious accidents could and should be prevented with this issue.

- Larue, OH, USA

I was parking and almost hit the car in front of me because the brakes weren't working at low speed. Vacuum pump failure.

- Montrose, MN, USA

As I was driving in traffic my brakes became so hard to push that I could not successfully get it to stop effectively without using my body's weight to try and depress the brakes. I still couldn't get it to stop correctly. Then I was in stop and go traffic and almost rear ended someone. Happened many times more before I could get it in to be fixed.

- New Milford, PA, USA

Brake pedal becomes hard to press at times. Pedal must be pressed hard to the floor in order to stop. Occurred 02/14/19, on a few occasions while driving on the road and almost caused an accident. Also occurs when letting foot on and off brake pedal multiple times. Almost feels as if no braking power at all, unless pressed hard to the floor.

- Ashburn, VA, USA

Brake pedal becomes rock hard and nearly impossible to stop when driving at low speeds or on an incline

- Plainfield, IL, USA

My 2016 Chevrolet Silverado brakes become very stiff when braking at low speeds. This has happened on 3 seperate occations. I have to physically use every ounce of strength I have to press the brakes to stop the truck. On two occations I almost hit another car but stopped just inches away. My truck has been taken to pep boys and brakes plus in denver, co. Both companies cannot find anything wrong with the truck. I've read that there is a lawsuit against GM for this problem and it seems to be very common.

- Denver, CO, USA

Brake pedal becomes hard with little to no brakes a low or idle speeds.

- Brunswick, GA, USA

At low speed my brakes seem to have failed. The brake pedal is very hard and I almost drove into oncoming traffic.

- Houston, TX, USA

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