While parking in reverse at low speeds, the brakes became really stiff and was barely able to stop.

- Soledad, CA, USA

During parking (low speeds) my brake pedal began making noise. When stopping in the parking spot, the brake pedal was very stiff and could only press it down 1/2"-1", barely able to stop.

- Richmond, KY, USA

Brake pedal gets hard to push or trying to stop.

- Taylor Mill, KY, USA

The brakes at slow rate of speed become very hard to operate and push. Made appointment with GMC dealer for service (sched for 1/31).

- Guntersville, AL, USA

While pulling into a parking lot ant a friend apartment I was turning into a parking spot when the truck completely died causing no power steering or braked nearly causing me to hit his neighbors car.

- Bakersfield, CA, USA

When exiting from one highway to another in heavy traffic were breaking was required, my trucks power steering and power brakes had completely gone out. I was on a straight track for a highway patrol who was standing outside his vehicle along with another motorist. After fighting to steer the truck while trying to brake to avoid hitting other motorists I realized that the truck had also died. Shook up and scared I started the truck and began to drive away with the officer yelling what the hell are you doing. The truck has done this several times. Three of which almost resulted in an accident. It has been in the dealership were they told me it was a high resistance in the negative battery cable which was replaced and resulted in no change.

- Bakersfield, CA, USA

The contact owns a 2015 GMC Sierra 1500. The contact received a recall notice for NHTSA campaign number: 19V761000 (electronic stability control, service brakes, hydraulic, service brakes). The contact took the vehicle to finnegan Chevrolet Buick GMC (26529 southwest fwy, rosenberg, tx 77471, (281) 342-4200) to be serviced for the software update. After the contact had the vehicle repaired per the recall, while driving at a low rate of speed, the brakes failed to operate without warning. The vehicle was towed back to the dealer where it was diagnosed with a faulty brake vacuum pump. The manufacturer was notified of the failure and did not assist because the vehicle was previously repaired per the recall. The vehicle was not repaired. The failure mileage was 65,000.

- Rosenberg, TX, USA

The contact owns a 2015 GMC Sierra 1500. While the contact was driving approximately 35 mph, the preceding vehicle stopped abruptly. When the brake pedal was depressed, it traveled to the floorboard. The contact started to pump the brake pedal; however, the vehicle crashed into the rear of the stopped vehicle. There were no injuries, but the contact stated that he felt a bit sore. A police report was filed. The air bags operated as intended. The vehicle was towed to quebedeaux Buick GMC (located at 3566 E. speedway boulevard, tucson, AZ, 85716) to be diagnosed and repaired. The contact was informed that there was a failure with the brakes, but was not given a definitive diagnosis. The contact stated that the estimate for the repair was $22,000. The repair was still pending. The vehicle was included in NHTSA campaign number: 19V645000 (service brakes, hydraulic). The manufacturer was not informed of the failure. The approximate failure mileage was 78,000.

- Oro Valley, AZ, USA

When braking the pedal gets really hard. When backing my small boat in the lake I have had to stand on the brakes to get it to stop. Hoping truck and boat along with myself would not go down. Very scary. When the first initial push it seems fine but then they go. Forwards you can tell they are not right and you had better stay your distance from anything in front of you. After reading all the other complaints this is crazy there has not been a recall don't think a smaller man or woman could have prevented the hole thing from going in the water. Love the truck we all have problems. Confront them and get it right. Still love GMC. Maybe not GMC board though. Man up before someone looses a loved one.

- Valley, AL, USA

The contact owns a 2015 GMC Sierra 1500. The contact received a recall notice for NHTSA campaign number: 19V645000 (service brakes, hydraulic). The vehicle was taken to nelson hall Chevrolet (1811 S frontage rd, meridian, ms 39301, (601) 621-4593) where it was repaired. Afterwards, the brake pedal became difficult to depress. The contact stated that the failure recurred three times. The vehicle was not taken back to the dealer for repairs. The manufacturer was not made aware of the failure. The failure mileage was approximately 105,000.

- Lawrence, MS, USA

The contact owns a 2015 GMC Sierra 1500. The contact received a recall notice for NHTSA campaign number: 19V645000 (service brakes, hydraulic). The contact stated that the brake pedal was depressed to the floorboard; however, the vehicle failed to immediately come to a complete stop. While the brake pedal was depressed, the vehicle unintentionally accelerated. The contact mentioned that the vehicle was placed into neutral to keep the failure from occurring. The vehicle was taken to mckinney Buick GMC (3950 S central expy, mckinney, tx 75069, (469) 804-2338) where the vacuum pump was replaced, but the failure recurred. The manufacturer was made aware of the failure. The failure mileage was 110,000.

- Whitewright, TX, USA

The contact owns a 2015 GMC Sierra 1500. The contact stated that the vehicle exhibited reduced braking power when driving at low speeds. The vehicle was taken to mike raisor Buick GMC (2912 main street, lafayette, Indiana 47904, (765) 273-4954) for NHTSA campaign number: 19V645000 (service brakes) in August of 2019. Within a couple of weeks, the brake system failure worsened after the repair. The contact also experienced reduced braking power when driving at high speeds. In addition, the brake assist feature failed before the vehicle was stopped. The contact stated that the stopping distance was significantly longer. The manufacturer was contacted. The vehicle was not diagnosed or repaired. The failure mileage was 32,000.

- West Lafayette, IN, USA

The contact owns a 2015 GMC Sierra 1500. While operating the vehicle at night, both the low beam and high beam headlights illuminated extremely low, which created a visibility hazard for the driver. Also, while driving in forward and reverse, the brake pedal became extremely hard to depress and the stopping distance was extended. The contact indicated that the failures were more present while driving at low speeds in reverse and after pressing the brake pedal multiple times. The cause of the failures was not determined. Charlie's Chevrolet (1412 us route 202, winthrop, me 04364) and the manufacturer were notified. The failure mileage was 14,000.

- Fayette, ME, USA

2015 GMC Sierra denali. Consumer writes in regards to brake pedal pivot bolt sensor failure.

- Washingtonville, NY, USA

Brakes wouldn't stop

- Fountain Inn, SC, USA

The contact owns a 2015 GMC Sierra 1500. While driving at low speeds, the brake pedal was depressed, but the vehicle failed to stop. The contact stated that extra force was needed to depress the brake pedal and stop the vehicle. The vehicle was taken to tustin Buick GMC (1 auto center dr, tustin, ca, (714) 460-9877) where it was repaired per NHTSA campaign number: 19V645000 (service brakes, hydraulic); however, the remedy failed to repair the vehicle. The contact mentioned that the failure still occurred. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000.

- Orange, CA, USA

The contact owns a 2015 GMC Sierra 1500. While braking or making a right turn while braking, the vehicle lost power. The failure occurred three times in traffic without warning. In addition, the stabilitrak warning indicator illuminated. The vehicle could not be driven. Palm dale Chevrolet (1160 motor ln, lancaster, ca 93534, (877) 385-0885) was contacted, but they did not assist. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and did not assist. The failure mileage was 58,000. The VIN was unknown.

- Lancaster, CA, USA

The contact owns a 2015 GMC Sierra. While driving low speeds, the vehicle violently vibrated and made an abnormal noise. Also, the stabilitrak and check engine indicators illuminated. The contact mentioned that the check engine indicator periodically illuminated and flashed. Also, while driving, extra force was needed to depress the brake pedal and stop the vehicle. The vehicle was taken to boulevard Buick GMC (2800 cherry ave, signal hill, ca 90755, (562) 492-1000) where the contact was informed that the vehicle misfired and the entire engine needed to be diagnosed. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 59,000.

- San Pedro, CA, USA

The contact owns a 2015 GMC Sierra 1500. While driving 30 mph, the contact attempted to depress the brake pedal; however, the pedal was extremely stiff and hard. The contact stated that the service brake assist warning indicator illuminated. The contact was able to continue to drive, but had to use two feet to stop the vehicle. The contact drove the vehicle to an independent mechanic who diagnosed that the brake vacuum pump failed and needed to be replaced. The mechanic stated that the vehicle needed to be towed to a dealer. The vehicle was towed to jerry smith Chevrolet (12484 reservation rd, anacortes, wa 98221, 360-610-4128), but was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was approximately 57,000.

- Oak Harbor, WA, USA

GMC truck brake pedal will become very stiff and difficult to depress at low speeds after brakes are hot (driving through mountains). This appears to be consistent with the GM brake booster issues that appear online.

- Tega Cay, SC, USA