Service trailer brakes light pops up and chimes over and over again. I've never pulled a trailer. It's distracting and will randomly go off. Seems to go off when gas is below 1/4 tank. Sometimes it goes months without happening. Sometimes it happens a few days in a row. The dealership says they can't do anything unless they see it go off.

- Anoka, MN, USA

Brakes have stopped working while driving down the road, previously they have occasionally glitches out primarily for example when I pull into a drive through restaurant or in a parking area. Service Brake Assist pops up.

- Vernal, UT, USA

The contact owns a 2017 GMC Sierra 1500. The contact stated while driving 70 MPH, the vehicle began to independently brake without depressing the brake pedal. The contact stated that the "trailer brake service" and the "service brake" warning light were illuminated. The contact pulled off the road safely and drove the vehicle to his residence. The contact had not taken the vehicle to a local dealer. The vehicle was not diagnosed or repaired. The contact had received an unknown recall letter from the manufacturer. The manufacturer had not been informed of the failure. The failure mileage was approximately 14,230. The VIN was unavailable.

- Seaside, CA, USA

The brakes are failing especially after braking while on an incline. Pressure on the pedal becomes mushy then hard and will not stop the vehicle. The truck has 90,000 miles on it. A brake assist light came on while backing down a hill and braking.

- Downsville , LA, USA

Leaving a parking lot and had a complete loss of brakes due to faulty vacuum pump.

- Kansas City, KS, USA

My truck trailer Brake system continues to come on and my doors are locking and unlocking. It has my 4x4 trans rubbing as well. Its a non stop issue everytime I get into my truck it does this and it happened out of no where. I had this truck a little over a year now.

- Saint Louis, MO, USA

Still having the slow parking problem. Almost hit a car today when trying to stop while parking truck. Software update by dealer did not fix the problem. This happens every time I try to park and/or slow stopping at a crosswalk.

- Westminster, MD, USA

. the engine mounted mechanical vacuum pump may decrease over time decreasing the amount of vacuum/ power brake assist, causing vehicle not to stop. Same as my 2016 GMC. I had to also have the ( evap control valve replaced). Transmission surges and on the down shift its knocking coming tyo a stop..in my rear ending a parked vehicle because of the brakes pulsating and not stoping scared me..dealership..dealership.no

- Bellville, TX, USA

Panel message with beep Saying: SERVICE TRAILER BRAKE SYSTEM

- Medway, MA, USA

While backing up I hit the brakes and the pedal made a clicking noise. I pumped the brakes and it stopped. This has happen several times over the past several months. I made a compliant to the dealer while under warranty and they found nothing wrong. 62000 current miles on the vehicle. Safety issue"?"

- Phoenix, AZ, USA

While in a parking lot, I tried to slowly move forward and then come to a pause. My brakes didn't work quite right and the vehicle didn't stop for an additional 15-20 feet from where I would have liked to stop. Luckily I was just moving forward to get out of the way of another vehicle trying to drive behind me and I didn't have anything directly in front of me that I needed to stop before. If I was trying to stop for a pedestrian I would have certainly hit them. If I was trying to stop behind a vehicle who suddenly stopped I would have ran into the back of their vehicle. There has been a recall on similar vehicles; same make, model and year as mine for what appears to be the same issue. Recall # 19V645000 This has also happened in my garage while pulling in, and in another parking situation. The Service Brake Assist warning comes on the Information screen.

- Parker, SD, USA

Transmission shifts extremely hard in low speed. transmission temperature sensor is bad causing warning light to be on. Brakes fade at low speed causing abs system to growl.

- Williamstown, WV, USA

My brake pedal randomly gets extremely hard, causing my truck to not be able to stop as it should. This almost caused me to read end the vehicle in front putting everyone in danger. There are no warning lights on. There is a recall for this issue that my model year falls under however my vin says no open recalls. It-??s a booster vacuum seal problem with the breaks. Very frustrating that my truck is experiencing this recall issue but is not included. This causes a huge safety issue.

- Columbia , IL, USA

I was backing my boat into the water at a boat ramp and my brakes got very hard to push when I was backing into the water. I had to stand on the brakes to get it to stop, if my wife had been backing the truck in, it would have been in the lake. I see that there are no recalls on this vehicle. I bought it about four months ago and don't know the history of any recalls that have been done. I also had the transmission problem with the shimmy, and per the GM dealer flushed the fluid and the shimmy has all but disappeared. I am glad, because when I ask if it didn't repair it would the transmission be covered under warranty, he said no because of the mileage. These reasons are probably why the guy traded it in in the first place.

- Pacolet, SC, USA

no breaks loud sound grabbing breaks growling sound very loud sweeking sound happens all time

- Hiawassee, GA, USA

Stiff brake pedal at low speeds and brake assist error message

- Plainville, GA, USA

Low speed braking issue. Was in a parking lot trying to park moving about 1 or 2 mph. Truck would not stop and it was like there where no brakes until I pressed as hard as I could. Does not do this at normal speeds

- Williamsburg, MI, USA

On 9/2019 they supposedly did the reprogram to fix the hydraulic braking issue on my truck. It is now doing the very same issue again. I go to slow down or stop and feel like its not slowing down and I pump the pedal to get a good pedal to stop. It does this quite frequent now. Is there anyone who can help me see if this can be done again under recall?

- Cape Girardeau, MO, USA

This happened multiple times. The brake pedal is hard at low idle, and you have to stand on brake pedal to stop the vehicle. Typically happens when trying to back in a parking spot or in stop & go traffic the brake pedal becomes hard to push and truck doesn't stop as quickly

- Shoshoni, WY, USA

I was driving 50mph and was behind a semi as I started to pass him I noticed an oncoming car and decided there wasnt enough time to pass so I started to push the brake pedal to slow down and get back behind the semi and the brakes locked up which produced an uncontrollable spin in which I did a 180 degree spin and ended up going into the ditch backwards and tipped over on my side no airbags deployed either.

- Canton, IL, USA