2020 Chevrolet Malibu Brakes

I was unaware that when I purchased this vehicle that when the oil is low, the breaks go out and the break power booster shatters. The beaks have gone out on me 2x already and thankfully I’ve only had to replace the break power booster only once. Now once the oil is changed the breaks go back to normal, there is no grinding of any sort heard, so now going forward I pay real close attention to my engine, I listen and pay attention to the feeling and sound of the breaks, once the oil begins to become low knowing it’s time for an oil change around 40% is when I start to feel a bit of the difference in the breaks and I can feel a little bit of grinding, no oil light has come on at this time nor has the oil light or any type of signal has ever come on at anytime to let me know that it was time for an oil change. I’ve checked for recalls, I’ve checked message boards, mechanics have no clue about this problem, but at least my mechanic does now!

Vehicle vacuum pump failed I have changed it 4 times now. Saw there have been more cases

Shift to park. Im not able to park my car. W low miles. Chevy dealer stated not under warranty. Will cost 800+ to repair. Previous known problem (17-19). It was repaired my last malibu & was repaired under recall. Now a TSB has been issued by chevy for my 20 so they are aware. If they know it is a problem why is there not a recall? This happens often. Each time i park, I have to fight my gear shift & pray it eventually sticks. It does not seem safe. This is a new car & is unacceptable knowing the history. I can provide pictures or send estimate if needed.

Brake pedal hardened due to vacuum pump

I am writing to formally report a critical safety issue with my 2020 Chevrolet Malibu, which resulted in a severe accident and posed significant risks to my safety and the safety of The issue involves the brake vacuum pump, which failed while I was driving. The component is currently with the vehicle, which is stored in a parking facility, and is available for inspection upon request. The failure of the brake vacuum pump caused a sudden and complete loss of braking power while I was driving. This malfunction put my life and the lives of others at immediate risk. On the first occasion, in April, I narrowly avoided a serious collision. Four weeks later, I experienced a second instance of brake vacuum failure, which led to a severe accident. The inability to stop the vehicle safely was directly caused by this malfunction. I contacted General Motors (GM) in April 2024 to report the initial brake vacuum failure. At that time, the issue had not yet been reproduced or inspected by a dealer or service center. Following the accident, I have been unable to confirm whether GM or any other party has The vehicle and component have not been inspected by the manufacturer, police, or insurance representatives since the accident. I reported the issue to GM prior to the accident, but they have not provided any assistance or resolution. Prior to the initial brake vacuum failure in April, I did not observe any warning lamps, messages, or other symptoms indicating a potential problem. The failure occurred suddenly and without warning, making it impossible to anticipate or avoid. This situation is incredibly distressing, and I believe the brake vacuum pump defect poses a serious threat to public safety. I urge the NHTSA to investigate this issue thoroughly and take any necessary steps to ensure the safety of other drivers who may be at risk.

UNKNOWN Coming off a ramp to slow down and brakes were hard. Have to press down to brake.

P0556 code and brakes are hard to stop. 40,016 miles on the car

The brake pedal is hard. The car does not want to stop. The brake booster is not working. The car only has 40,000 miles