Loss of power braking while traveling slowing and using the brakes

- Dewitt, MI, USA

Loss of power brakes at low speed when backing into parking spot. 4 occurrences since October 2018 under exact same circumstances, checked by dealer, no work done but tac case opened.

- Amarillo, TX, USA

Break vacuum pump breaks get hard at low speed making the the vehicle hard to break when making a stop or in an emergency stop and when trying to slow down

- Siloam Springs, AR, USA

While backing into paved boat ramp at 1.5 to 2 mph brake pedal became very hard and had to press pedal as hard as I could in order to stop truck. "truck was on level ground and I was turning steering wheel slowly". I pulled out of ramp and problem repeated when brake pedal pressure was applied and removed and then reapplied. Problem continued to reoccur after trailer removed from truck and brake pedal pressure was applied and removed them reapplied. Truck was looked at by dyer Chevrolet the next day. Chevrolet is aware of issue as tech heard my description and he stated there was a bulletin from GM on it but it was not recalled. After receiving estimate later that day from Chevrolet I decided to take truck to another repair facility that estimated repair $500 cheaper than Chevrolet dealer. Repairs were made following the GM bulletin and using GM parts from the Chevy dealer for $1139 as opposed to dyer Chevrolet wanting $1662 for a issue that needs to be recalled. A quick internet search indicates that many others are affected by the issue as well. It is my hope that you may be able to help as I am sure this will occur again as GM has not changed anything they have merely charged the customer to put a bandaid on a problem they engineered. The mechanic that ultimately repaired truck stated GM knows they have problem as they only used that booster pump on 2015. There is no way a 50000 mile truck should have this issue. Please see attached documents from Chevrolet dealer that describe issue of mechanical failure of vacuum pump. How is it not a recall issue if vacuum pump may pump motor oil into brake booster? this should not happen and is not a normal wear and tear issue. This is a engineering failure. I look forward to helping any way I can to get this recalled. Contact me as needed. Shame shame shame on

- Fort Pierce, FL, USA

Brakes stop working at low speeds or when reversing. Feel like they get completely stiff at low speeds, and dont work again until I increase the amps. I have read that it is an issue with the vacuum pump. Getting looked at today. Truck has 77K miles on it.

- Dallas, TX, USA

While driving in stop and go traffic the vacuum power assist for the brakes failed multiple times making it much more difficult to brake and stop the vehicle before colliding with the car in front of me. This happened while driving on city streets. A vehicle warning message appeared in the drivers information display stating service brake system. The message went away after sustained continuous driving without braking when the vacuum system was able to recover.

- Rio Rancho, NM, USA

I was driving to the store with my family everything fills fine when I get to the parking lot I try to stop and my truck just keep going I have to use the parking brake to stop the truck I drive around to make sure that happens because is a new truck it thas it again so now my truck is parked on my house because is not safe to drive

- Auburn, WA, USA

Going throught down town traffic and the brakes would not work. It felt like I was pushing on a brick. Then had to use emergency brake in traffic for two hours.my boss has same truck as I do and one week later had the same thing happen except he hit the wall at his home. I have spoken with several other employees and all have experienced this problem. It cost about 800 dollars to fix

- Holden, LA, USA

Brakes fail at low speed. Problem diagnosed by Chevrolet dealer and determined to be the same problem as outlined in Chevrolet technical service bulletin pit5361B. GM not covering repair as they claim nothing is wrong and the vehicle is out of warranty.

- Vero Beach, FL, USA

Yesterday (18-Mar-2019), I was pulling into a parking space at a restaurant and all of a sudden when I tried to apply my brakes on my 2015 Chevrolet Silverado 1500 crew cab, the pedal was extremely hard to push. The truck continued moving after I exerted as much force as I could on the pedal. Luckily the curb assisted in stopping the truck before I crashed into a wall as I had my two young children in the vehicle with me at the time. I am also glad my wife was not driving the vehicle at the time. I don't believe that she would have had enough force to stop the vehicle under the conditions observed. No warning lights came on before, during, or after the incident. The symptoms match those reported under bulletin pit5361 regarding a known issue with failure of the brake vacuum pump. I purchased the truck new in August 2015. The truck has about 51,000 miles on it.

- Horizon City, TX, USA

Brake failure at low speed. While sitting in stop and go traffic, the brake pedal reacts as if the vehicle isn't running. Pedal seems high and hard then soft and low. Vehicle will stop with extreme pressure on pedal.

- Indiana, PA, USA

Went to go use my brakes and noticed they got really hard and almost hit someone. I towed it to the dealership and they said it was a faulty vacuum pump, belt, etc..I had asked if this was recalled they said no.told me it was going to be 1600 to fix. I went home and did a little research apparently this is an issue. 2015 Chevy 1500 65K miles

- Meridian, ID, USA

Low speed brake issue- braking effort increased considerably and vehicle and caused become difficult to stop. While parking vehicle in private parking lot the brake pedal became very firm with no take up and took considerable effort to bring the vehicle to a stop. Immediately brought vehicle to mechanic who informed me that the problem was failing brake booster and that it is a common defect with this make model of vehicle. Also informed me that the when the booster begins to fail can deposit contaminates in the oil system that can prematurely damage the engine. A internet search produced a long list of customer with similar vehicles describing their experience of similar issues. I called the local Chevy dealer and they also informed me that is common issue but there were no recalls or manufacture announcements on the vehicle so they would not reimburse for the repair. I contacted GM and they logged my complaint GM case #[xxx] but they would be unable to offer any repair assistance at this time. Will repair vehicle at my own expense. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Gaithersburg, MD, USA

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that the brake pedal became stuck while reversing out of the driveway. The contact had to apply more pressure to the brake pedal than usual to slow down the vehicle. There were no warning indicators illuminated. The dealer was not contacted. The vehicle was taken to an independent mechanic who diagnosed that the brake booster needed to be replaced. The contact planned to have the mechanic repair the vehicle this week. The manufacturer was made aware of the failure and provided a case number. The failure mileage was 44,000.

- Gaithersburg, MD, USA

The truck is intermittently hard to stop, I believe it is losing vacuum. I've had a mechanic look at the truck and they cannot find anything wrong. This is intermittent and I'm scared to drive the truck. This only seems to happen at low RPM. I believe this should be investigated because the issue could cause an accident. I'm a 235 pound male and I believe a smaller person would have even more trouble stopping with the sudden loss of vacuum. I read in a forum that others are having the same issue and I should file a complaint. Had it not been for the article that mentioned the NHTSA I would have never filed a complaint. I have to think there are others dealing with this issue and aren't sure where to turn or report the issue. Please help.

- Bowling Green, KY, USA

Driving newly purchased 2015 Chevy Silverado 1500 at 35-45 mph on freeway (which has a 65 mph speed limit). Traffic ahead was slowing down, and the brakes were pressed, speed was reduced, but when the cars in front (with at least 5 car lengths of space ) suddenly stopped, and I slammed the brakes, the brakes failed. I tried and tried pressing the brakes, but the truck didn't stop, and I rear-ended the vehicle in front of me, which ended up rearing the vehicle ahead of it, and so forth. Due to the brakes not responding, I was unable to stop like the rest of traffic, and thus, caused an accident. (note: The weather and road conditions were fine, not went road, as stated on police report.)

- Smith River, CA, USA

Brakes suddenly required much more effort to work. Happens frequently when applying brakes at low speeds, and occasionally when applied intermittently while slowing from 50-80mph. Examples of when this frequently occurs are: Entering parking spaces, stop and go traffic, approaching toll booths on highways, descending hills, and any situation where brakes are applied and released repeatedly over a short period of time. Condition can be very dangerous and cause accidents. I have needed to stand on brakes when stopping in many occasions to avoid accidents. Lately the condition had worsened and I did not feel safe driving the vehicle. Upon researching the issue I found many similar complaints from owners and survive bulletins from GM that include a large amount of affected vehicles. This should be a forced safety recall.

- Elkhart, IN, USA

Braking assist service warning message appeared on screen. Noticed braking assist is not working at low speed and idle. Requires significant foot pressure to have brakes work. No accident yet.

- Windham, ME, USA

I have a 2015 Silverado 1500 5.3 with about 90K miles. While I was parallel parking, after the 2nd pump, I realized the truck wasnt stopping. I had to use both legs to make it stop before hitting the car in the back of me and almost crushing a pedestrian. My brake pads and rotors are fine. I do hear an abnormal noise coming from the engine area at all times. Kinda like a bad pulley bearing or something. Noticed it the day the truck started acting up. I looked online on mutiple websites and understand this is a common problem with the vacuum pump, brake booster and master cylinder. This should be a safety recall.

- Springfield, GA, USA

When attempting to brake, I pressed the brake pedal with appropriate force only to find that there was a loss of brake power... I would equate it to 85-90% brake loss. I was able to apply pressure as hard as I could and the vehicle stopped over double the usual stopping distance. I did end up going through the stop sign and was thankfully not hit. I pulled over and restarted my truck, I applied pressure to the brakes and all normal pedal feel has been restored.

- Cloquet, MN, USA