This is the either 5th or 6th complaint for this vehicle. I am making after almost 6 months, most of which my car has been in the dealership. The brakes locked up in the parking lot at my bank, I noticed the signs that it was about to lock up and pulled into the parking lot before it threw a code. I was in fact on the phone with the dealership when it happened. They sent their tow truck and as of today the car has now been in their possession for 3 weeks. I got a call from the dealership telling me they are replacing the brake booster. This car now has over $2,700 in new parts, this doesn't count the labor cost. This includes, coil pack, plugs, master cylinder, fuse box, abs module and related pressure valve and brake switch. The manager said they are running out of ideas and parts to replace. When I asked him what happens if this still doesn't fix it, he said that that situation was to unheard of to consider. I pointed out that if the dealership can't find the problem then GMC needs to step up because I still have 3 years left to pay for this car and that eventually there either have already been others who've died or there will be in the future, because unless this car is defective, it can't be the only one like this. I wonder how many people have died from this and it just wasn't caught that this problem caused it. I also explained that my next step would be to find a lawyer.

- Ashland, KY, USA

This is the 5th time my car has broken down with this problem, the brakes lock up on the highway and the "stabilitrak" service light comes on. (suspension) This time there was a gasoline tanker right behind me. If this man hadn't been such an experienced tanker driver, I would now be a bloody spot on the highway, my kids would be without their mom, my husband widowed and my grandchildren would have to be happy just hearing stories about me. I would be in the local grave yard, six feet under. So far, I have had a new fuse block, master cylinder, coil pack with plugs, abs module, pressure valve and a new brake switch. That was as of 2 weeks ago, my car broke down again last night, as reported above. My car, which I just made a payment of $635, and is just now at 51,000 miles is less than 3 years old. I am truly afraid to drive it, I don't know who to contact at Chevrolet or GMC there has to be some kind of recourse or are they not able to fix the BRAKES on a car"?"

- Ashland, KY, USA

This is the second complaint I have filed, but it is the 3rd time my car has been at the dealership for the same thing. The brakes lock up without warning and the traction control error light and stabilitrak error light come on. This time the transmission didn't go into limp mode it just shut down. The 1st repair, dealership told me that it was a corroded fuse block. I paid to repair that. The day the car was released back to me, it broke down, required towing 3 miles after I left the dealership. I towed it back. They said they couldn't find problem, I told them to drive exact same route, they did, it locked up again. Mechanic then said the master cylinder was binding up on the inside and it was replaced. Six weeks later it failed the same way again, had it towed. Dealership said it was the abs module and a valve, replaced those. They put a rush on it as it was right before Christmas, two days after Christmas it broke down again. It is currently at the dealership, and I was told that they can't figure out what's wrong with it"???" Each time it has locked up, I have been in traffic, once doing 70 mph highway, once doing 60 mph highway I managed to pull off but then blocked an on ramp to a bridge on a highway, once going uphill in town at 35 mph. Each time I narrowly missed hitting other people and once almost got run over by a gasoline tanker. In any of these events I could have either died or killed someone else. Each time there was no warning at all, no lights, noises or anything. Even if I get my car back, I will be terrified to drive it. My husband said, and I quote, "I will bleed through my eyes before I buy another Chevy" end quote. My local dealership is doing everything they can, but I am getting frustrated, because sometimes they have a loaner car and sometimes they don't. I work two jobs, since my husband got sick with covid-19 last year and spent 10 days on a ventilator. He can't work like he used to, so I am picking up the slack, please help us.

- Ashland, KY, USA

My car brakes locked down while I was driving home from work, at 70 mph, posted speed limit. I got it to the dealership, it started out that it was a broken wire, now they tell me I need a new fuse box and it's not covered. My car was purchased in may of 2020 and has 47k miles on it. The repairs have gone from $412 dollars, not including the tow bill to $719 dollars, not including the tow bill. A fuse box shorting out at two years old, and locking down the brakes is absurd. I work at a trucking company and have 40+ years experience with no tickets or accidents, I don't know how my car didn't flip forward it stopped so hard, it's hard to think about what would have happened to someone with less driving experience than I have trying to control a car in the same instance. Please check on this, if you need to know, my car is now at Don Hall Chevrolet in Ashland KY, ph. 606-618-9616, my car is in their service center.

- Ashland, KY, USA

This is the 3rd time this has happened in our vehicle, my second complaint here. I was driving on the interstate at posted limit of 60 when brakes began locking up on me. I got it off to the side of the road, I thought my car was going to flip over the brakes locked down so hard. Service stabilitrak light came on, abs light and traction control light came on. I called the dealership who told me onstar provided the stabilitrak code for it. They told me it would be 160 to have it hooked up to diagnostics, that if it isn't covered by warranty it is a customer assumed cost. My husband replaced the ignition coil and spark plugs thinking that it was the problem, well over $200 for parts. The car is now doing the same thing, but I noticed it happened an incline, then realized it happened the 1st and 2nd time on a decline. I am now wondering if the transmission isn't going out at 47,363 odometer miles. The dealership is no help, they have the actual codes but won't provide them or tell me what's wrong. All I know is that for a 25,000 k car, it's dangerous. I am lucky I was able to maintain control of the vehicle on an interstate highway.

- Ashland, KY, USA

My husband and I were leaving a local grocery store, when we began backing up and the "hillside assist" light came on for a 5% or so incline. So after backing up, we pulled out of the parking spot and our brakes began locking up, this continued all the way home (about 3 miles). The error msg, "service stabilitrak" came on when we were pulling into our driveway. We called the dealer where we purchased it because we have less than 48000 miles on it and they said that we may have repairs covered under the power train. However, stabilitrak is not part of the power train, I guess he didn't think I would know that. So we hung up, and did a little forum research and found out we would have to reset the computer to make it "unlock" the brakes. We unhooked the battery for half an hour and reset the computer and it worked, our car is running fine now. My husband was a truck driver for a decade, he knows how to drive in potentially risky situations. However, I think it should be investigated because of the potential safety risk. Since we were doing 25 mph or less this was easily handled for a short distance. However, this would be catastrophic if someone were on the highway when this happened. It could easily cause an accident at any speed. Anyone with less skill than a seasoned truck driver, could be killed if this happened to them. Please investigate this matter.

- Ashland, KY, USA