Any time, while I am driving, the brakes turn rock hard when trying to brake. When it first started a little over a week ago, the brakes would only turn hard when I was going 20mph or slower. Now it's everytime I try to brake while driving. Every once in awhile it will happen when I am stationary. When it first happened a little over a week ago I almost hit another vehicle in front of me while I was coming to a stop light. It took everything I had in me to stop my vehicle due to the brakes. My husband, who is a mechanic, looked at my brake pads and they are fine. I keep having the service brake assist badge pop up on my dash when I have trouble braking. There needs to be a recall on this to fix the vacuum pump, brake booster, or whatever maybe causing the issue. This happens now everytime I'm driving on the highway, country road, my driveway, or turning. I have completely stopped driving my truck until the issue is fixed, due to it being a safety hazard for my family and others. I have horses so I use my truck on a daily occurrence to take care of their needs. The problem needs to be fixed and a recall needs to happen.

- Richlands, NC, USA

When pressing the brake pedal it become very stiff. In the dic, 'service brake assist ' apears. Hard to stop when moving at times, especially when going slow. I do not feel safe traveling with my family in this vehicle.

- Fort Stewart, GA, USA

Driving from Ohio to Florida on August 4, 2018. The last 200-300 miles the brakes worked fine during highway driving. When I would get in stop and go traffic - stop at a light, going through a drive-thru, gas station stop, etc. - the brake pedal would be very hard to push, had to use all my strength to stop vehicle and it would still slightly roll. Had to contact Chevy dealer in kissimee, Florida to check out problem and they diagnosed brake booster and vacuum pump failed and had to be replaced.

- Massillon, OH, USA

After driving for long periods, the power brakes become inoperative when driving slowly. This first happened about one year ago. I was puzzled. It did not happen again until now. It is becoming more frequent. This is very serious. I believe there should be a recall.

- Donna, TX, USA

Bought my 2014 Silverado and around 20,000 miles it seems like the brakes got hard and didn't wanted to stop. Turned it off and after a little bit turn it on and everything was working good. Took it to the dealership and they said they couldn't find nothing wrong with it. It worket good for a long time and did it again and they told me at the dealer that warranty was expired (had over 36K) so I took it to a mechanic and he couldn't find the problem neither. Last week did it again now it has 60K miles reading here and there notice that there's a lot of trucks around the same year and all point to the vacuum pump. It does this when is slow running and after a good time running like on a trip or so. Im afraid of installing the pump and still the same. Cause only does it in rare ocasions

- Baytown, TX, USA

The contact owns a 2014 Chevrolet Silverado 1500. While driving or reversing at 5 to 10 mph, the brake pedal failed to depress. The failure made it difficult to stop the vehicle. There was also a loss of power steering ability at the same low speeds. The failures occurred intermittently. The dealer (chelsea Chevrolet Buick, 2038 mckernan dr, chelsea, mi 48118, (734) 475-8663) stated that they knew about the failures, but there was no recall. The dealer stated that they could help with the power steering failure since it could still be covered by the warranty. The manufacturer suggested that the contact take the vehicle to the dealer to be evaluated. The failure mileage was 70,000. Consumer stated power steering failed again since this report. Updated 11/29/18 the consumer stated the recall work was completed in September but did not fix the defect.

- Chelsea, MI, USA

The contact owns a 2014 Chevrolet Silverado 1500. While driving various speeds, the brake pedal was depressed, but failed to operate. In addition, the stabilitrak, brake, and steering off warning indicators illuminated. The contact mentioned that the accelerator pedal needed to be depressed in order for the brakes to function normally. Also, while driving at low speeds, the vehicle stalled and completely shut off. Frontier Chevrolet (1640 East highway 66 route 66 and highway 81, el reno, ok 73036, (405) 262-3355) was contacted and stated that General Motors was aware of the failures, but there was no remedy. The vehicle was not repaired. The manufacturer was made aware of the failures. The failure mileage was 81,600.

- Yukon, OK, USA

2014 Silverado 1500 lt. Total loss of brakes in both forward and reverse at lower speeds... brake pedal extremely hard to push. Don't want to drive my truck. Not safe. I might kill somebody if I did drive

- Surprise, AZ, USA

Brakes on my truck have failed at low speed while parking. After only 3-4 times of lightly pumping the brakes they completely go hard and the peddle will not move. No matter what amount of pressure is applied the truck will not stop. Seems to happen when in reverse the most. Brake pads, fluids, etc are all perfect. Problem doesn't happen at all when driving at speed. Only occurred at low speed. Dealership says that's probably the vacuum failing... have found that there are hundreds of complains describing the exact same problem on trucks

- Lovington, NM, USA

When I am braking frequently at lower speeds (example: In line at a drive thru) my brakes get harder and harder to press until eventually I cannot press them at all. I have to put the vehicle into park, turn off the engine and crank it again. Only then does it work. However, the issue comes right back. Apparently, many others are experiencing it. This could be deadly. Others have gotten into accidents because it happened at high speeds. There is even a technical service bulletin for this specific issue. Tsb #pit5361B

- Denham Springs, LA, USA

Loss of braking at low speed. The brake pedal becomes very hard and vehicle will not stop due to faulty vacuum pump. It is a known problem with these trucks and GM has even replaced the original part number with a new updated unit but has not recalled the old faulty ones. If this wasn't a faulty part then why replace it with an "updated" one. This is a very serious safety issue and I feel GM needs to be held accountable and fix this issue before someone is badly injured or killed.

- Conway, AR, USA

At low speeds such as in parking lots, especially after reversing or turning the vehicle will occasionally experience the following issue: Display will say that stabilitrack is on, advise that power steering is reduced. The air conditioning, radio and other electric systems will then shut off. Power steering is cut off along with brake pressure. On multiple occasions the engine has also shut off requiring the vehicle to be put into park or neutral to restart the engine. If this occurred on the highway it would certainly cause a major incident.

- Austin, TX, USA

The contact owns a 2014 Chevrolet Silverado 1500. When the vehicle was started, the ABS and stabilitrak warning indicators illuminated. The dealer and manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 65,000.

- Fresno, CA, USA

I was driving on the interstate at about 50mph when a stabilitrak message came up. After it came up the vehicle completely shut down for a couple seconds. I lost all steering and braking during this time as if the ignition was turned off. This happened a couple of times. When I got to my destination the vehicle completely shut down before I could put it into park and turn the ignition off. It is extremely concerning that the vehicle was doing this while driving at highway speeds.

- Locust Grove, VA, USA

Twice in the last three days the brakes on my truck have failed at low speed while parking. After only 3-4 times of lightly pumping the brakes they completely go hard and the peddle will not move. No matter what amount of pressure is applied the truck will not stop. Seems to happen when in reverse the most. Brake pads, fluids, etc are all perfect. Problem doesn't happen at all when driving at speed. Only occurred at low speed. Dealership says that's probably the vacuum failing... have found that there are hundreds of complains describing the exact same problem on trucks with less than 50,000 miles on average.

- Haslet, TX, USA

While travelling at 50 mph on a highway, I began to apply the brakes to turn into a store parking lot. The truck slowed some, then the brake pedal became extremely hard to depress with the truck still rolling. I was able to drive truck to the local Chevy dealer for inspection and repair (not covered by warranty of course) cost of $1400. GM is aware of the problem. The dealer showed me a "bulletin" they received telling them probable causes and part numbers. I called GM. I was told that there just weren't enough reported problems to issue a safety recall yet. If you google the brake problem there are numerous accounts of owners experiencing this same problem. Some with narrowly missed accidents. I had no type of warning that there might a problem. GM said "sorry, can't do anything for you. Keep your receipts in case a safety recall comes down." I told GM I hope it doesn't take a number of tragic accidents to issue a safety recall. This is a serious safety issue. Oh, and the $1400 repair bill gets me the same crappy parts that failed!

- Afton, OK, USA

My complaint is hard brakes. While moving slow I experience hard brakes and the vehicle didn't want to stop rolling. This is a very big safety hazzard and concern. This need to be address immediately.

- Miami, FL, USA

While driveing and comeing to a stop brake petal became extremely hard. Almost ran into vehicle in front of me.spoke with local dealer and was told the vacuum pump was the problem and my truck is out of warranty and they would not repair unless I paid for it. My truck has 80000 miles on it but we use it to travel.this sould be a safety issue.

- Fayetteville, TN, USA

Brake system failed at low speeds - faulty vacuum pump vehicle was in motion attempting to reverse into a parking spot. This could have caused accident with injury but not limited to death. No insurance claims were made. Parts and labor was $622.12 for the vacuum pump

- Fort Worth, TX, USA

While at a Chevy dealer to have a recall (17276 loss of power steering) done on my truck I asked them to check on a grinding/whining noise from the area of the brake booster pump on the engine. They said in fact it was the brake vacuum booster pump, that it should be fixed or I could experience a sudden loss of braking power. They further explained it would have been covered under warranty but that expired a year ago and would now cost me some $440. Am wondering if other folks have complained about this. I've read of it happening to others on certain internet blog sites. To my way of thinking the brakes (and I suppose loss of ABS/traction control) are at least as important as the steering that was enough of a problem to issue a recall. Btw the truck had 27,971 miles on it when the problem started, hardly 'warn out'.

- Canisteo, NY, USA