Trailer brake service alarm. Replaced module under stair tire and dash board. Still in alarm, internet says it-€™s a common problem with wiring harness failure. Many others have some problem.

- Lorain, OH, USA

I keep getting a dashboard warning saying "service trailer brake system". from what i have found, this is due to an inexpensive wiring harness being used. It's very distracting and even if i dismiss the error, it keeps coming back up.

- Little Rock, AR, USA

Was driving in a parking lot. When driving slow My brakes got stiff and I couldn-€™t stop it was so stiff it didn-€™t want to stop I had my kids and wife. Scary and unsafe. Told GMC there was a recall they said it was already fixed with my situation. But just cuz you see on the computer it doesn-€™t mean it-€™s fixed. So they said I got to pay but it-€™s in a recall already but properly not reboot right.

- Fife , WA, USA

Na

- Ny, CA, USA

Unknown

- Phoenix, AZ, USA

The brake pedal gets hard to push down when slowing down and especially when backing up slowly. After looking into some things I'm pretty sure the problem is with the vacuum pump.

- Maysville, KY, USA

at first my brakes began locking up on the vehicle, almost as if they were pumped full and not able to press down any longer, shortly after that the stabilitrack light came on and white smoke began to come out of the exhaust as well as a slight shake in the engine, i immediately turned the vehicle off and parked it, mind you i bought the vehicle 1 day ago and it is already broke down, the issue is with gmc and these sensors they are using they are faulty engine reduces speed and it is not safe to say the least.not only that but had the exact same problems with my Gmc Acadia which i finally got the light to stop going off after replacing transmission, brake pedal position censor, as well as gas pedal position censor, also had the throttle body replaced, Do you all make products that are worth anything, nothing was ever done about the Acadia, the Gmc sierra is a 2015 with 70,000 miles on it this car should not be acting like this please contact me at [XXX] thank you so much for your time, also there are 14 recalls on this year truck yet mine shows that there are 0 recalls to be fixed I am wondering about this as well. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Duquoin, IL, USA

Service Trailer Brake Brake System error keeps flashing.

- San Angelo, TX, USA

The component that malfunctioned is the vehicle braking system at slow speeds. I first experienced the problem at a restaurant drive thru line. After several stops as the line advanced, the braking system failed (extremely hard pedal) and car kept advancing and if someone would have been directly in front of me ( at a normal distance for a drive thru ) I would have made contact with them at a slow speed. I checked with my dealer the next day and they said that there were no reported problems for this issue on my vehicle. No warning lamps or messages present but it seems to me to be similar to the recall ( N192268490 ) as it only happens at slow speed with repeated application of the brake. There were no symptoms of the problem prior to this incident and it took me completely by surprise. I took the vehicle in to a service facility and they test drove it and said that they did not recreate the failure but I believe that they didn't try repeated braking at slow speed as I requested. I feel that there is a problem and that it only shows up during the aforementioned driving conditions. I have checked your website and the manufacturers and my truck VIN doesn't show up for their computer reprogramming recall but think that maybe it should.

- Collinsville, IL, USA

Trailer Brake system warning continues to pop up on my dash along with the chimes. Not sure if this will affect my braking or not, but I pull a 32' camper and am continually concerned about this warning. It happens randomly not just when towing a camper. It has been in to a GMC dealer and they say nothing can be done about it due to no recalls.

- Sanbornville, NH, USA

Alert of -€œservice trailer brake system-€ keeps beeping and alerting many times while driving

- Woodland Hills , CA, USA

The first issue is popping coming from the front end of the vehicle causing a steering issue. This has been "repaired" multiple times with no resolution. Every time the popping occurs which is almost every turn the steering wheel will not turn. The next issue is the radio is causing driver distraction by changing stations and screens not just on the display itself but the instrument cluster as well. The radio has been replaced once due to the fact it was on backorder for 6 months another attempt has not been made. The third issue is the brakes have failed at slow speeds no warning lights were on, they just stopped working in the Mcdonald's drive-through. I had to get out of line to keep from rear-ending the person in front of me. Now, after that experience, the ABS light has come on and the service StabiliTrak flashes on the dash as well as parking assist off, everytime I hit the brakes..

- Leland, NC, USA

Brakes do not work under slow speeds. Pumping breaks at slow speeds (parking lot speeds) causes break pedal to stiffen and the vehicle's breaks are not responsive. When this happens, I feel what seems to be ABS engaging (break pedal pulsates). The pulsating is only noticable in the break pedal. This behavior seems more prevalent in inclement weather.

- Candor, NY, USA

Brakes becomes hard when backing up at very low speed and sometimes it feel like the anti lock brake is activated. Usually happen when backing

- Everett, MA, USA

Whenever I connect a trailer to my vehicle I will lose all brake pressure when in reverse. It only happens when in reverse and connected to a trailer. I will have to pump my brakes to the floor and there's no braking power. This does not happen when I do not have a trailer connected.

- Jacksonville, FL, USA

I was towing a camper down Rt 422 in Butler, PA in my GMC truck when it suddenly caught fire. My wife was following me and alerted me to pull over as quickly as possible. I had no brakes and the gear shifter went straight up without shifting. The doors would also not open while the truck was filling with smoke. I got out using the manual unlock knob and am lucky to be alive. We had about one minute to try to extinguish the flames before it fully engulfed both my truck and camper. I filed a complaint with GMC. By what I am reading online there are many instances of fires and GMC does not seem to provide assistance. This is very unnerving and scary to say the least. I am sad and angry for this situation. This happened through no fault of my own and I lost absolutely everything. I was in the middle of moving to start a new job and lost many work items in my truck as well. I had to delay my start date for work. Now I am responsible for deductables, insurance increases and other items not covered by my insurance. Now I have to buy a new vehicle and camper but what will GMC do to help me? Probably nothing.

- Sarver, PA, USA

While going slowly and turning, my brakes failed to stop me. There was no pressure for the brakes. This happened several times. I almost ran into the back of a car.

- Effort, PA, USA

Waiting in line a costco gas station had my foot on the brake pedal all of a sudden the brake pedal got hard and the truck will not stop almost hit the vehicle in front of

- Burbank, IL, USA

At low speeds after pumping brakes I have no brake pressure and cannot stop. Pedal bottoms out. Once I start moving again brakes come back again.

- Sussex, WI, USA

My brake assist service light came on in my truck and the brakes are acting weird at low speeds. I know there is already a recall for this in 2015 GMC Sierra's but apparently mine isn't included. This is apparently a problem for all 2015 GMC's so how do I get mine included. I already contacted my local GM dealer and they won't do anything about it unless I pay for it. It's obviously a known problem and a bigger problem than they are admitting. Help me get all 2015 GMC on the recall list before someone else gets hurt or killed

- Fargo, ND, USA