Service Brakes Problems of GMC Yukon Hybrid

Tl the contact owns a 2009 GMC Yukon Hybrid. While driving approximately 35 mph, the contact depressed the brake pedal and the vehicle surged forward. The contact stated that the failure occurred daily since 2016. The vehicle was taken to the dealer (thomas Chevrolet, 1263 w baltimore pike, media, PA 19063), but they could not replicate the failure. The manufacturer was notified of the failure and case number: 8-4516506076 was filed. The vehicle was not repaired. The approximate failure mileage was 109,300.

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Since I purchased the vehicle 2 yrs ago I have complained to Dodge and GMC about the issues involving the car. It has hessitated when pushing on the gas after being in a stop. It has accelerated on its own on a stop light gone all the way to 4. I had to put it on park for it to stop. The car has completely turned off on me several times then the check engine light turns on and then after 2-3 days turns off along with the road hazzard light. When I take it to have it checked they find nothing. I finally got tired of it took it to Dodge to have it diagnose paid $150. 1. They did not offer a loaner car 2. They had my car for almost 2 days just for a diagnossic test 3. They did not have a hybrid specialist there nor did they sent it to one. They didnt find nothing wrong with it just suggested to do transmission change, change the wires to the spark plugs and change the spark plugs after doing all that. The problem continued. I then took it to GMC paid another $150 for them to do a diagnosis test. They also did not find anything wrong with it but seen that it had a extended warranty of the throttles and said that could be it. After changing that the problem still continued. The only thing that the guy told me from me explaining the problems is it could be the brake senser. Paid &170. 00. Problem still continued nothing has changed. This is dangerous and could cause an accident, the car turning completely off on me hessitating to drive and accelerating on it's own when on park is dangerous. I have done more than my park in taking the car to see what's wrong with it yet no one can find nothing wrong with it the machine says nothing when I want the problem to acure to show them what I am talking about it does not do it. I don't know what else to do. But this is dangerous very very dangerous. I paid alot with no results to show for it. Please look into this and have it checked.

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Rocks enter a small hole of the rear brakes causing them to be lodged in the brake drum and making it necessary for a mechanic to remove. My concern is that I won't know rocks are in there and they will causing a braking problem resulting in an accident.

Vehicle brake system responds erratically about once every 100 miles. It has caused numerous near miss accidents. This problem has happened on numerous occasions but I'll describe the most recent. I was driving down a local highway at about 50 miles an hour. Traffic was backing up and came to a stop. I hit the brakes (no danger/emergency, just a normal stop). The vehicle slowed normally to about 15 miles per hour and then the brakes "let go" and the deceleration stopped even though my foot was still on the brake pedal. I had to release the pedal and slam on the brakes anew to get the vehicle to stop before slamming in to the traffic in front of me. This has happened several times since and it seems to occur when the vehicle is switching from hybrid to non-hybrid mode and/or when the regenerative braking is cycling on or off. My vehicle is a 2008 GMC Yukon Hybrid it's been taken to the dealer at least twice for this problem but nothing has been repaired. I can't recreated the problem on demand, but it happens on average once a week and scares me so much that I don't feel safe driving it anymore. It's just a matter of time before there is a serious accident.