2015 Chevrolet Suburban: soft or spongy brake pedal

Filed Aug 6, 2025 · Brakes · MS

If I pull up to a parking spot and I’m slowly creeping into the spot, say at a popular supermarket, and slowing down the brake pedal stiffens up and it’s almost impossible to press. I feel like my truck may not stop. If I’m on a slight incline and in a line behind another vehicle, I’ve noticed the brake pedal stiffens up then as well. Awhile ago I thought there was a recall for this for my truck and it was something about the vacuum in the brake pedal. This is a super problem. I have five kids and we are on the road a lot. This has been happening a lot but most recently would be today.

Filed Jan 30, 2024 · Brakes, Driver assistance · NV

I purchased my vehicle after the recall 19V‑645 regarding the brake pump was issued. My vehicle was a part of that safety recall, and the module was reprogrammed in September 2019 (N192268490-01). The pump has not been previously replaced according to service records. I purchased my vehicle from a dealership in April 2021. I recently (late 2023) started having issues with my brakes, having increased brake pedal effort, a hard brake pedal, and increased stopping distance. I have had the brake assist alert come on several times. The issue happens more frequently at lower speeds. My park assist alert also comes on regularly when applying the brakes. I have taken my vehicle to GM several times regarding the park assist issues, but they have only cleared the computer codes and cannot figure out why they keep coming back, as there is no detectable issues with the system. I have also brought my vehicle in due to the adaptive cruise control, as it has also caused issues while using it. It will often apply brakes if it detects a vehicle in another lane while driving, causing the vehicle to “slam” on the brakes going at high rates of speed (I.e. driving on the interstate at 80 mph) and has nearly caused accidents, as the vehicle becomes hard to control, and the risk of following vehicles not having the reaction time to avoid a rear-end collision is increased. My particular vehicle does not have an option to switch between regular cruise control, and adaptive cruise control. After talking with GM, they informed me the only way to “fix” the issue is to completely replace the module with an updated module that allows the option to turn off the adaptive cruise control, which is quite costly to the consumer. My vehicle is currently at a GM service department, and has been diagnosed that the brake pump has failed, and needs replaced. They are claiming that it is not covered under the recall. It is not covered under GM’s extended warranty due to mileage restrictions.

Filed Feb 25, 2023 · Brakes · MD

When trying to brake while parking in a parking spot at low speeds, or so and go traffic my wife and I experience an extremely hard brake pedal that creeps to a stop, almost hitting others and structures.

Filed May 22, 2019 · Brakes · 101,000 miles · UT

Vehicle was in motion, at slow speeds (under 25mph) and when the brake is pushed, the brake pedal became hard but failed to stop the vehicles forward motion. This happens intermittently and is a huge safety issue. This occurs only at slow speeds and prevent the driver from stopping the vehicle even if the brake pedal is pumped. This occurred again today and chevy was contacted and stated they have no recalls or issues with their brake system even though there have been numerous complaints logged to the federal safety agency. When this occurs there is no braking for the vehicle and will cause an accident if not fixed.

Filed May 6, 2019 · Brakes · 90,000 miles · AZ

Driving at slow speeds pulling a trailer, vehicles brake pedal was very hard and they would not stop vehicle. Another time without trailer same thing, very very hard brake pedal at slow speed, could not stop vehicle had to apply emergency brake with putting the car in neutral and then in park to stop.

Filed Apr 20, 2019 · Brakes · 51,000 miles · MI

Vehicle is 2015 chevrolet suburban purchased new in december 2015. Build date was july 2015. Current mileage ~51,000. Vehicle condition = pampered. There are no warning lamps illuminated now or at time of incident. At low speeds (~10 MPH), brake pedal can become excessively firm, and even with extreme pressure applied, brakes fail to stop the vehicle effectively. I am 6'3" and 220lbs, and yesterday, it took all my effort to keep vehicle from rolling into vehicle in front of me while idling thru drive thru. I'm rarely scared driving a vehicle, but this was scary. If a pedestrian would have walked in front on the vehicle, I would not have been able to stop. Pushing with my maximum effort, suburban took several feet to stop from an idle crawl speed. When this occurs, pedal feels "hard" and has almost no stroke. Hard pedal / compromised brakes lasted ~4 minutes before condition "corrected" itself. This occurred 4/19/2019. I've driven vehicles without power brakes (by design). Effort required to stop suburban with this condition is multiple times higher than those vehicles. Is gm doing anything about this brake system failure? At parking lot speeds where this occurs, someone could be killed due to this failure.

Filed Jan 7, 2019 · Brakes · 65,000 miles · FL

Tl* the contact owns a 2015 chevrolet suburban. While attempting to reverse out of a parking space, the brake pedal became stiff when depressed and the vehicle would not stop. The contact stated that the failure occurred sporadically for three weeks. The vehicle was not taken to the dealer for diagnostic testing. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 65,000.

Filed Dec 30, 2018 · Brakes · 61,000 miles · MO

Intermittent hard brake pedal and no brakes driving slow speeds in stop-and-go traffic on i70 driving downhill out of the mountains toward denver, co.

Filed Apr 29, 2018 · 82,327 miles · SC

Brakes suddenly stopped working or very hard pedal. Almost crashed into a wall.

Filed Nov 28, 2016 · Brakes · 1 miles · LA

I have a 2015 chevy. Suburban lt the brake pedal is hard to press and the car continue to roll even after I apply the brake despite the rotor and all the pads have been replaced.....this is very dangerous.