Brake Master Cylinder problems of the 2015 Chevrolet Silverado 1500

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.

When coming to a stop in traffic the brakes failed to stop my truck. I was going straight at a very low speed. The pedal felt like I was pushing on a brick. I did get my truck stopped and got it off the road. I called my dealer who said they had not heard of this problem but thought it sounded like a brake booster failure. I called gm customer service who started a case # 9-5055710889, they told me that the truck was out of warrenty. Upon further reading I discovered the TSB for my truck to replace the brake booster, master cylinder, line , and vacum pump. The truck is being repaired now. My truck has 41,000 miles on it.

On 12/15/2018 my brake vacuum pump went out. I had it replaced at a dealership. Total cost $1506. 56. Master cylinder, brake booster, and a connecting pipe had to be replaced also. April 2019, I receive a letter from gm, describing this issue and saying if I have less than 72,000 miles or bought it new within the last 6 years,whichever come first, they will fix it. Brakes are a very serious component. This problem dates back to the 2014,s. I feel gm should reimburse me for my repair cost, since the problem came from their plant. I have more miles on my truck than they say they will cover. Brakes and the components are things they should cover. I have invoices and proof that I paid these expenses. Every person pays hard earned money for a new vehicle. Manufacturers should be required to back their vehicles. I was driving on a side street when this pump went out. I had all I could do to stop it, using both feet on the brake pedal. Thank you for your time.

I was coming off a hill and trying to brake before making a turn onto another road. The brake pedal would not depress, felt very hard and I was unable to stop the vehicle. I took the truck to a garage and was told it was a fault in the brake vacuum booster and master cylinder. I will attach the invoice for the parts. The truck is still getting fixed and do not have an invoice for labor yet.

I brought my 2015 chevy Silverado 1500 to a local repair shop as my brakes were not functioning properly. Stopping required very forcefully depressing the brake pedal to stop. On November 7, 2018 the repair shop contacted the local chevy service manager to determine if there was a recall on the vehicle given that the vehicle is a recent model with limited mileage. It was determined that master cylinder and brake booster were defective and needed to be replaced. After taking a lengthy drive the vehicle had same brake problems making it extremely difficult to brake going down a hill. The vehicle was taken back to the local auto repair on November 15th. Repair shop called local chevy dealer and spoke with parts manager to see if there was a recall on recent model chevy silverado as they had a 2016 silverado in there shop same day for same problem. Chevy dealer parts manager indicated there was not a current recall but they did notice an issue as they had sold 10 abs pumps in just one week! the local repair shop replaced the abs pump. The defective brake equipment placed my family at risk and cost me more than $900. Most importantly this defective brake equipment in the recent model chevy silverado is a significant safety issue. Had there been a need to stop quickly I feel confident I would not have been able to avoid a collision.

Tl the contact owns a 2015 Chevrolet Silverado 1500. While the contact's spouse was driving 5 mph, the brake pedal was depressed, but failed to slow down the vehicle. The contact stated that the brake pedal felt very firm. The vehicle was driven to moran Chevrolet (located at 4511 24th Ave, fort gratiot twp, mi 48059, (812) 202-4062) where it was diagnosed that the vacuum pump, brake booster, brake lines, and brake master cylinder needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 63,324.

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.