2015 Chevrolet Tahoe: soft or spongy brake pedal

Filed Jan 22, 2025 · Brakes · NC

Vacuum pump and vacuum pump belt replacement. Experiencing increased brake pedal effort, hard brake pedal, and increased stopping distance. Confirmed by an auto shop and mechanic that this is the issue. There was special coverage given by General Motors to this vehicle to address this issue that expired in November (but I did not know that this existed). The vehicle has not yet hit 150,000 miles. Request to have my Tahoe special coverage warranty extended to address this issue.

Filed Dec 5, 2022 · Brakes, Transmission · 70,000 miles · MI

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while starting and driving the vehicle, there was an abnormal whining noise detected. The vehicle was taken to the local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was repaired. After retrieving the vehicle from the dealer, the contact stated she was driving, and the brake pedal was hard and failed to respond. The contact drove into the curb. The contact called and informed the dealer of the additional failure. The contact also stated that the whining noise persisted. There were no warning lights illuminated. The vehicle was towed to her residence. The vehicle was then towed to the local dealer again where it was diagnosed and determined that the vacuum pump had failed and needed to be replaced. The vehicle was repaired. The contact stated that while driving after retrieving the vehicle, the vehicle was jerking. The contact stated that the failure was related to the federal safety agency Campaign Number: 19V645000 (Service Brakes, Hydraulic). The manufacturer was not contacted. The failure mileage was approximately 70,000.

Filed Nov 11, 2022 · Brakes · WI

Loss of braking effort. Also described as a hard pedal, requiring increased effort to slow the vehicle.

Filed Dec 9, 2019 · Brakes, Suspension · 88,000 miles · IL

Has a problem in the suspension when you drive it jumps like an old truck. Recently replaced the front shock absorbers that we're covered by the warranty, but the problem still continues and it also feels too loose on the brakes. Another problem, recently went out to a store and when I reversed and I wanted to stop because a vehicle was coming, the brake pedal became hard as a stone and does not stop the vehicle no matter if you brake with all your strength the pedal becomes very hard and, now the problem is very constant.

Filed Mar 28, 2019 · Brakes · 54,000 miles · TX

I initially noticed difficulty with braking while backing out of a parking space at a very low rate of speed. The brake pedal became hard and the vehicle continued to roll backward, with full weight on the brake pedal. Approximately one month later I was in bumper-to-bumper, stop-and-go traffic and the brake pedal again hard and the vehicle continued to roll forward. This issue did not occur during normal driving conditions, only at low rates of speed and with frequent, repetive stopping. I took the vehicle to a local chevrolet service department and they were unable to replicate the issue or identify the problem with diagnostic equipment. I was told by the service manager the problem was likely due to 'over use' of the brakes and the brake is designed to be 'pumped' rather than compressed for more than a few seconds. I took the vehehicle to a second chevrolet dealership. The service department replaced the brake booster vacuum pump and this seems have resolved the issue. I was unable to drive my vehicle for approximately 2 months due to fear the brakes would fail. The vehicle has 54,000 miles and was purchased new from a dealership.

Filed Mar 13, 2019 · Brakes · 60,000 miles · GA

The 2015 chevrolet tahoe has hard brake pedals when moving in low speeds. The need for increased effort to depress the brake pedal has high occurrences in stop-and-go traffic and high occurrences of failures at lower speeds. Numerous attempts at the gmc service department in dallas, ga failed to report issues with the breaks. After researching this issue on the internet, there are numerous lawsuits regarding this issue and gm issued a series of service bulletins regarding the break problems. According to the service bulletins, fluid may be found in the brake booster and/or the booster vacuum line during a normal diagnostic.

Filed Nov 28, 2018 · Brakes · 64,589 miles · FL

Brakes suddenly became extremely hard to apply at low speeds. Brake pedal was stiff and wouldn't engage. I first noticed it while pulling in a parking space then reversing to straighten the vehicle. The brakes wouldn't engage and I had to press the emergency brake. This first occurance happened approximately 5:00 pm on november 11, 2018 in orlando, fl. At this time, I noticed the issue but after I turned off the vehicle and restarted, it appeared to be resolved. I continued my evening and drove several places and eventually drove back home to tampa, fl without any issues. Upon reaching my destination and attempting to parallel park, the brakes failed again. I turned of the car and restarted it and the brakes did not engage and the brake pedal was stiff. I did not drive it again. I suspected an issue with the vacuum pump and had the vehicle towed to dimmitt chevrolet in clearwater, fl the following morning. Dimmitt "verified concern. Performed diag. Found engine vacuum pump is weak and not pulling enough vacuum at times." dimmitt "removed and replaced vacuum pump."

Filed Aug 10, 2018 · Brakes · 97,700 miles · TX

Tl* the contact owns a 2015 chevrolet tahoe. While driving 5 MPH, the brake pedal was stiff and unable to be depressed. In addition, the service brake assist indicator illuminated. The vehicle was taken to the local dealer (jay hodge chevrolet, 478 wildcat way, sulphur springs, tx 75482, (866) 839-1034) where it was diagnosed that the vacuum pump and brake belts needed to be replaced. The vehicle was repaired. The manufacturer was not notified. The failure mileage was 97,700.

Filed Jun 11, 2018 · Brakes · 75,000 miles · SC

Inadequate braking for the vehicle. My wife was traveling down a city street and could not stop the vehicle causing her to pull over for fear of her safety. The vehicle has 75000 miles on it and is out of the 60,000 mile bumper to bumper warranty. My wife all most wrecked because the brake pedal was hard and caused the vehicle to become difficult to stop. Chevy would not pay for diagnostic fee even though this is a known issue. Very unsafe to operate. Should be a full blown recall to go along with the technician service bulletin that was issued regarding the vacuum pump booster and master cylinder and other braking system components. $1400 repair estimate if the dealership follows the tsb recommendation on repair. Chevy does not care about customer safety. Unacceptable!!!

Filed Jun 5, 2018 · Brakes · 51,902 miles · WA

No power assist with brakes, hard pedal, inadequate braking. Found vehicles vacuum pump and line that supplies vacuum to the power brake booster failed.

Filed Jun 5, 2018 · Brakes · 60,200 miles · WA

No power assist with brakes, hard pedal, inadequate braking. Found vehicles vacuum pump and line that supplies vacuum to the power brake booster failed.

Filed Feb 7, 2018 · Brakes · 79,000 miles · TX

My 2015 chevrolet tahoe lt would not stop approaching a major intersection. Brake pedal became hard and would not come to a complete stop at a major city intersection, nearly causing an accident. I was told by the dealership that the vacuum pump will need to be replaced at my expense and it is a common occurrence on this year and model . Not only is this a safety issue, its a common problem and a technical bulletin has been released for the repair. This vehicle is out of the bumper to bumper warranty but is still however under the 1000,000 drive train warranty. Gm needs to address this problem before someone gets injured.