Brake system fails at low idle speed. When truck is put in gear the brake pedal becomes stiff and vehicle cannot stop. Brake pedal also does this in stop and go traffic. Chevrolet says this is not a safety issue. How is this not a safety issue" the problem is a mechanical pump called a power brake booster pump. We were told this can be replaced for $1100 and is not a warranted part. The only way to keep brake pressure at low speed is to hold your foot on the brake pedal and give vehicle gas to increase the RPM's. how is this safe"

- Westminster, MD, USA

Slow speed no brakes hard pedal.I just read about 100 complaints with the exact same issue. Why is there not a recall on this yet. I don't have $1200 to fix this.

- Pearland, TX, USA

When brake pedal depressed the braking system has malfunction. Brake petal has little movement, feels hard and vehicle does not respond. Takes a great amount of pressure to stop vehicle than vehicle still moves.

- Pueblo, CO, USA

Several times commuting in to work, wife said brakes felt funny, hard to stop. I would drive and have no problems, then it finally happened to me in at a busy intersection. Tried to stop but truck kept rolling, lost braking power and the truck slid forward. Managed to stop but happened again two days later and it happened at a higher speed. Brake pedal goes real stiff when in stop and go traffic and it is hard for the truck to stop. Going approximately 20 mph, the car in front slows down to turn. I applied brakes and the truck was hard to stop. The brake pedal went stiff as I was pushing down hard. The truck felt like it was slowing down but barely. I almost hit the car before it turned. I took the vehicle to the dealership and they diagnosed the problem as the brake booster vacuum pump and pipe. I called the corporate office and told them that I am having a safety issue. They said that it was not a defect or real safety issue. They said that the truck was out of warranty. It only has 61,156 miles on it as of 9 July 2018. The first time the issue occurred was in May 2018. At that time I had about 59,000+ miles on the vehicle. There are several complaints regarding this issue. A couple of certified mechanics stated that this part should last much longer than it has. I would like to start a class action lawsuit. Service bulletin #pit5361.

- Douglasville, GA, USA

While moving in stop and go traffic brake pedal becomes hard and vehicle will not stop.

- Charlotte, NC, USA

Vehicle fails to stop at low speeds while parking in forward or reverse.

- Lake Elsinore, CA, USA

On my way home pulling a 5000 lbs boat and trailer on a public highway and suddenly my brakes get hard as a rock and loose the ability to basically stop with any quick response. After limping the truck a short distance to a friends business I learn this truck has a brake power assist pump"??????????" call me old fashion but the vacuum usually comes from the intake manifold, not a rinky dink pump with a belt to drive it. Totally unsafe in my opinion. Something as important as brakes to be relied on a rubber band and a 5 dollar china bearing. I feel this is a poor and unsafe design and could easily been avoided. Now comes the enjoyment of having it repaired and only a dealer available part. Truck just turned 50K and my dealership is telling me this item is not.covered under warranty.

- Hudson, NY, USA

On two separate occasions within a 1 week period, the brake pedal became impossible to depress with the vehicle in motion. A noise could be heard similar to that of an active ABS. The first time this occurred while pulling into a crowded parking lot. I had to use the emergency brake to prevent a collision with a parked vehicle. The second time this occurred, I was parking at a curb in the main area of my town and again had to utilize the emergency brake to avoid hitting a parked vehicle. Internet research leads me to believe this to be a common issue with multiple reports of the same experience.

- Canton, PA, USA

The brakes will become very hard to press when they become hot. Driving at low speeds and in reverse, after the brakes are hot (highyway driving, then down to city traffic). Very dangerous if not aware of this issue.

- Springdale, AR, USA

Left side brake calliper support bolt fell out of top mount.(lost on hwy). Bottom bolt half way out. Calliper started scrubbing inner rem. Vibration and loud popping noise.

- Florence, SC, USA

I was backing into a parking stall the the brakes failed again! brake pedal was solid and would not depress to slow the truck to a stop. Only after extreme pedal pressure was there any braking action, but only slight. Because of this I hit the wall behind the truck. If someone was there, I would not have been able to stop. GM/Chevrolet have a service bulletin out on this issue. An internet search came back with 312,000 results. I've talked to my selling Chevrolet dealer and they reluctant to deal with it. Does somebody need to die before something is done. This is the 4th or 5th time my brakes have failed.

- Carnation, WA, USA

Have not even had my Chevy for a year and the brakes seized up causing the vehicle to not stop. Noticed there has been some issues having it towed to a Chevy dealership to see the cause of the problem, looks as if GM is aware of the problem, so don't know why I was not notified of this issue, could of been a very serious accident as I travel on the freeway at high speeds.

- Bonney Lake, WA, USA

While in a parking lot, there was an almost complete loss of brakes. The brake pedal would not depress. Only after pressing multiple times and very hard was there any braking action which slowed the truck. GM has issued a service bulletin, pit5361 about this issue. This is a known issue.

- Carnation, WA, USA

Need to replace the vacuum pump and line because brakes are wicked soft. At slow speeds truck doesnt want to stop. For example in traffic or parking. When I went to the Chevy dealer they told me that they've seen a handful of other vehicles with the same issue

- Chester, NH, USA

Truck has 62K. Truck will not stop at low speeds. Could easily back into and or over something or someone very easily. More frequent when at low speeds and while backing up. I almost backed into a roll up door before slamming on the parking brake. Took truck into dealership and was told that the vacuum pump, vacuum belt and hose from vacuum pump to brake booster needed to be changed. This is not a warranty fix.

- Piedmont, SC, USA

I was driving on the highway at 50 miles an hour during rush hour traffic, traffic began slowing down and as I went to push on the break, it was extremely hard. I could not push the break down at all, and my car would not slow down. I placed it in neutral and was pushing as hard as I could on the break with both feet. Finally, the truck began to slow down. I put me emergency lights on and crosses over 5 lanes of traffic, as I was in the carpool lane, to get off the highway. It was a very dangerous and scary situation.

- Menifee, CA, USA

The contact owns a 2015 Chevrolet Silverado 1500. While driving 15 mph, the vehicle began to lose vacuum pressure when the brake pedal was depressed. The contact had to apply excessive force to the brake pedal to bring the vehicle to a complete stop. The contact stated that the brakes engaged once the vehicle reached 1,000 rpms. There were no warning indicators illuminated. The failure recurred twice. The vehicle was taken to performance Chevrolet (4811 madison ave, sacramento, ca 95841) where it was diagnosed that the vacuum pump needed to be replaced. The vehicle was repaired. The manufacturer was contacted and stated that the vehicle was out of warranty. The approximate failure mileage was 46,000.

- Hayward, CA, USA

Noticed failure of vehicle to stop. Lack of power assist braking at slow speeds. Brake pedal is rock hard with little to zero travel (1/4' at most). Vehicle will continue to move (regardless of pressure applied to brake pedal) for several feet. While this has occurred in both forward and reverse gears; the issue is consistently observed in reverse.

- Burbank, CA, USA

Received an alert around 63,500 miles "alert: Service break assist." Dealership service advisor notified me that problem was "brake master cylinder leaking into vacuum boster. Both need to be replaced." Cost $1172.61. Break basically wouldn't work properly when pressed. This should not happen so early. I've only had truck for two years. Chevrolet needs to fix this. This could have caused an injury to myself or my family.

- Glendale, AZ, USA

Power brakes fail at low speed requiring more pressure to come to a complete stop. Occurred multiple times I while parking or idle speeds.

- Whitesboro, TX, USA