2017 Chevrolet Volt service brakes problems

“I was driving in stop and go traffic on a relatively busy road when I was cut off. I braked hard to avoid a collision. Immediately afterwards, the car would not respond to the accelerator and would not go forward. I was in the middle of the road and the car would not respond. It could have caused an accident. I put the car into park and then back into drive and it seemed to work again. But I am now worried about the car.”

“Unknown My car has been accelerating and decelerating on it’s own while I’m driving.I got it checked with Fix Finder and states that my EGR Valve and ABS System failed. I brought it to a mechanic for a repair and I was told that the valve was unplugged so they plugged it back in and cleaned it , and said that everything was fine it said it might also be the cause of the failed ABS System but everything looks fine. After I got it fixed, it’s doing the same again and it’s worse this time. The car is accelerating on it’s own faster than what it did but the dashboard is saying 0mph. I was driving in the highway when it happened and it’s scary so I had to pull over.”

“Been having issues with the dealership sierra chevy of monrovia. Brake fluid light came on. My car has been at the dealer for over two months now in counting. Closer to 3 months. First time was in July 24, 2024 for a check engine light. Fast forward to today Nov 19th, 2025. The car has been back at the dealer for the same issue the brake fluid light. Its now almost past 2 weeks. I have talked to the service manager and advisor a week ago. they told me they are having issues finding where the leak is coming from after having my vehicle there the past month. So I told them it was fine for the mechanic to drive the vehicle and figure it out. Now its almost another week and the service manager and advisor are not responding to my calls and texts. Left the service manager 2 voicemails already. Please help me get my car fixed and back to me. Service manager told me he would help me out with a rental since its a reoccurring issues . No communication from the dealership at all. No one is responding. After they claim to have fixed my vehicle the issue came back in less than a week. Dropped my car at the dealership on Nov 6th, 2024. Scared my vehicle's brakes will fail!…”

“SERVICE BRAKE BOOSTER EMITS A SEMI CONTINUOUS TAPPING/CLICKING NOISE. CHEVROLET STATE THAT IT IS NOT A SAFETY ISSUE AND DOES NOT REQUIRE REPAIR. HOWEVER, IT IS DIFFICULT TO HAVE CONFIDENCE IN THE BRAKING SYSTEM WHILE THIS SOUND PERSISTS AND IT IS A CONSTANT DISTRACTION WHILE DRIVING. PLUS, THE ABILITY TO SELL OR TRADE THE VEHICLE IN THIS CONDITION IS DIMINISHED. ELIMINATION OF THE NOISE INVOLVES COSTLY REMOVAL AND REPLACEMENT OF THE BRAKE BOOSTER ASSY. CHEVROLET FIXED AN APPARENTLY IDENTICAL ISSUE ON THE BOLT MODEL WITH A SOFTWARE UPDATE, BUT CURRENTLY HAVE NO INTENTION TO DO ANYTHING SIMILAR FOR THE VOLT MODEL.”

“My 2017 Chevy Volt has been making a clicking noise coming from the brake booster assembly since I have bought it. When your foot is released from the brake pedal, there is an audible click (3-4 times a second) inside of the cabin and I've decided to make a formal complaint as GM isn't taking the appropriate action to fix this issue. My reasoning is that this issue is not only common on the Chevy Volt, but also the Chevy Bolt as they share the exact same brake booster. For the Volt, dealers are instructed to replace the Brake Pedal Retainer - GM (39081933) and the Brake Master Cylinder - GM (84006919). This repair is often quoted in excess of $2,000 even though there is a very high likelihood of the issue returning even when the parts are replaced. For the Chevy Bolt, dealers were instructed to stop replacing the brake booster as they determined there was a software fix that could solve the issue. There was a TSB regarding this which details both the problem and the repair procedure (# [XXX]) [XXX] While GM fixed this issue on the Bolts, the Volts have the exact same issue and owners are being directed to spend $2,000+ to make a repair that won't even fix the…”

“BECM failure resulted in a situation where the vehicle drove with erratic surging power delivery throwing engine codes P1E00, U2603,U2604, U2605,U2606 Regen braking in this vehicle has a dedicated control on the steering wheel which applies only regen braking no friction brakes. When battery state of charge is high this can result in a situation where the regen braking button abruptly (i.e. during one extended activation of the button) delivers less brake force than the user is demanding.”