It keep having this issue constantly every minute saying trailer brake system

- Kansas City , MO, USA

low speed truck brake pedal becomes stiff and truck is hard to stop

- League City, TX, USA

Rainy road, 60mph on the hw with my family. Truck decides to engage stabilitrak or something to that feel and locked up the brakes. Talk about a scary moment with an 18 wheeler coming in hot behind you. Obviously, in the moment, I had no clue what was happening other than something with the truck was malfunctioning. This scenario could have gone wrong in so many ways. I'm honestly in shock someone has not been killed because of this?

- Alpharetta, GA, USA

The brake vacuum pump is failing. When in a parking lot the brakes get very hard al.ist causing an accident. There is no vacuum when trying to park in parking lot. The 2015 GMC Sierra had a recall for this but my VIN did not. Not sure why as it's failing too. I need my truck so will have it fixed today, but want a recall.

- Pine Island, MN, USA

Constant -??service trailer brakes-?? warning on dash. I Haven-??t done anything to cause it.

- Whiting, VT, USA

The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brake pedal was firm while being depressed. The contact stated that the failure occurred intermittently while parking or while at a stop. The brake pedal failed to operate as needed. The check engine warning light was illuminated. The engine power reduced message was displayed. The vehicle was taken to an independent mechanic, where it was diagnosed that the brake booster pump needed to be replaced. The vehicle was not repaired. The vehicle was taken to the local dealer however, the technician was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 66,476.

- Virginia Beach, VA, USA

Body paint delaminating. Also, difficulty sometimes stopping vehicle extra length required to stop

- Williamsville , NY, USA

Problem # 1At low speeds /parking I loose power that affects steering the radio and windows. I get a message on board stability warning message. Steering become hard and can-??t control/turn the vehicle Problem #2 at low speeds /parking my brakes loose power I have to press brake really hard to stop truck.

- Little Elm, TX, USA

In several occasions my brake when approaching stop sign or light and I hit my brakes more than once it goes to the floor and it become difficult to stop without having to push very hard on the brake pedal. It does it almost every time.

- San Antonio, TX, USA

The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 70 MPH and depressing the brake pedal, the vehicle would not slow down. The contact aggressively depressed on the brake pedal and the vehicle was able to stop as needed. The vehicle was taken to an independent mechanic to be diagnosed. The independent mechanic determined that the vehicle had experienced an unknown failure however, the vehicle was not repaired. The dealer was not contacted. The manufacturer was not notified of the failure. The failure mileage was 50,000.

- Mashpee, MA, USA

Service trailer braking system notice continues to pop up on the dash while driving.

- Springdale, AR, USA

Brake pedal effort is increased, pedal gets hard and vehicle is hard to stop. Happens at slow speed. intermittently.

- Visalia, CA, USA

Trailer brake system message keeps showing up on my dash and it-??s not safely to drive

- Beatrice , NE, USA

I tried to buy a car at car dealershipin lafayette oregon ( Pouya Auto sales) gmc sierra 2015 black. on the date 02/09/2023. They soldme this car with ABS, cruscontrol, presusre tires ligths on dashbord. the financial bank recomend me to bring the veicule back to the dealership to have them to fixed.. they didnt want to continue with the contract anymore and canseled. now they want to sell the truck to some one else. and is not safe to drive it with this isuuses

- Vancouver , WA, USA

Hard break peddle at low speeds, break booster issue

- Greenville, SC, USA

Trailer Brake System Service.

- San Jose, CA, USA

When braking at low speeds I have no brakes to stop and i can feel a vibration in the brake pedal.

- Church Hill, TN, USA

Brake pedal is hard to push at low speeds

- Pasadena, MD, USA

At low speeds, like parking it lost all brakes. I have noticed a few times since the first. I see they had a recall for the brake vacumm pump but I cant find much on

- Weston, MO, USA

Brake vacuum fail, causing the brake pedal to become stiff and unable to stop the vehicle. This issue has been on the recall for the same year and make of truck as mine, yet mine is not eligible for this recall repair? Please help Thank you

- East Peoria , IL, USA