Brakes Failed problems of the 2018 Chevrolet Silverado 1500

When the vehicle was started, a loud squealing sound was heard coming from the vicinity of the front of the engine. While under the oem bumper to bumper warranted period, Chevrolet dealer number one was not able to determine the problem or repair it. Furthermore, the problem was not reported in the vehicle history as reported. A short period later, Chevrolet dealer number two was able to locate the problem and repair it at my personal expense as the warranted expired on time as opposed to mileage. I learned that the same problem was a part of a previous recall which dealt with failure of the brake assist pump. Gm rectified the recall by changing the computer software to overdrive the pump beyond it's original design speed. This provided an increase in pressure which temporarily corrected the failure. The corrective action added more stress to the original design of the pump and now the pump is mechanically failing as a result. This failure could potentially cause an immediate unexpected brake failure potentially resulting in frontal collision and loss of life!. The dealers have not provided copies of service orders or replaced parts. I only have rental agreements to substantiate that something was done to the vehicle. Gm's customer care is investigating the unprecedented behavior of the franchised dealers with no reply to me at this time.

Been having voltage issues for a couple of days where my lights dim and volt gauge drops and raises while driving or stationary dealer said it's normal also hard down shifting while driving not letting off the gas assistant brakes have failed and clunk hard sometimes when stopping or press hard back at me through the pedal again dealer said it's normal I pulled my truck out from the back of the house to the front shut it off to go get ready for work a couple minutes later my daughter informed me my truck was over heating I went to door to find smoke pouring out of my truck from under the hood grab a fire extinguisher run out pop the hood and the whole passenger side of compartment is in flames how does a vehicle that's not running start on fire? awaiting my insurance company to get it out of here I imagine will be a total loss there isn't much left of the engine bay so not sure what started the fire.

My truck has a known recall with the brakes failing due to a mechanical issue with the vaccum. I contacted holly chevy in marion arkansas and it has been now over a month awaiting parts. I have to continue to drive this vehicle due to it being my only vehicle to travel to work. I have expressed this safety issue to them and having to press the brake pedal with force to stop the truck.

The brake peddle went solid hard and loss of braking happened while backing a boat trailer down a boat launch ramp. When the brakes failed the dash flashed service brake assist. Loss of power brakes caused the truck to not stop even with pushing down on the peddle as hard as possible. This occurred while coasting in reverse off of the throttle using the brake to slow the vehicle and boat down while going down the launch ramp in reverse. Speed was approximately 5 mph. I managed to stop the vehicle at the water line by applying the emergency brake. The local Chevrolet dealership where the vehicle was purchased replaced the vacuum pump under warranty due to weak vacuum. I lost power brakes again on the way home from the dealership when backing down an incline on my driveway at low speed. The dash flashed service brake assist again. Returned truck to dealership the next morning and took a technician on a test drive with me. Showed technician loss of power brakes and service brake assist message on dash when braking in reverse on an incline. Chevrolet dealership says they contacted Chevrolet technical support and replaced brake booster and replaced vacuum pump for the second time. This is on a 2018 Chevrolet Silverado 1500 lt1 with the 6. 2l engine and 42,155 miles.