When truck is turned on dash says service ESC brake system and service 4 wheel drive will not disengage from 2 wheel drive and parking brake is engaged and will not disengage and truck will not move. Infotainment screen will freeze up and not be able to change radion navigation etc

- Hereford, TX, USA

Service ESC warning on dash service trailer brake on dash brake system failure - 62 mph top speed warning on dash steering assist reduced drive with care on dash restarted truck and check engine light came

- Charlotte, NC, USA

Upon starting the vehicle and taking off after remotely starting it, multiple warnings popped up on the trucks dic. They were, system brake failure, trailer brake failure, ESC failure, do not exceed 65mph warning. After seeing those I applied the brake to stop and the brake pedal went to floor leaving the truck without any type of braking power what so ever. After coasting to a stop I shut the truck off restarted it and the check engine icon was on. The brakes did work after the truck was shut off and restarted.

- Henderson, KY, USA

Four days after having a recall performed I was getting an error for my ecs and ABS being disabled. The truck lost almost complete control of braking. I took it back to the dealership to be reprogrammed and the same thing happened a week later. Both times this happened when the truck was first started.

- Shelby Township, MI, USA

I had no issues with my truck until I went and had the most recent recall done for the brakes. I since have had brake issues twice. Once, hours after having the recall done I got in my truck and started it and all the dashboard lights were illuminated and I had to push the brake pedal to the floor after accelerating. The other instance was a week later after remote starting my truck from the phone application had the same scenario play out.

- Lincoln, NE, USA

Truck parked in morning, turned it on and multiple warnings came on, service trailer brake system, service ESC, brake system failure at 62mph, got warning from onstar that there is an issue with my antilock braking system, I took pictures of error but only could upload one.

- Edinburg, TX, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated while exiting a parking lot multiple warning lights illuminated including the ABS warning light, traction control warning, service engine soon warning light, and trailer brake warning light. A message was also displayed which stated do not exceed over 60 mph. The contact stated while approaching a traffic light, the brake pedal was depressed but went to the floorboard but failed to stop the vehicle. The contact called to gurley leep GM giant located at gurley leep GM giant, (574) 271-3700, and made the dealer aware of the failure. The vehicle was not diagnosed nor repaired. The manufacturer was informed of failure. The failure mileage was 12,575.

- Osceola, IN, USA

When I tried to drive my truck I received the below error messages and lights on my dash board: Steering assist reduced drive with care service trailer brake service ESC brake system failure - 62 mph top speed ABS check engine brake traction control I dropped the truck off at the GMC dealer for two days, I picked it up and it was fine. I was told it was a software update. Then 7 days later I had the same errors messages and lights on my dash board. And this time it was extremely hard to stop the truck. I needed to press down all the way to stop the truck.

- Massapequa, NY, USA

Brand new 2019 GMC Sierra AT4, just under 14K miles. Upon starting the truck, the following warnings came on. "brake system failure 62mph top speed", service trailer brake system", steering assist is reduced drive with care" service ESC" check engine" I turned the trick off, opened and closed my door, then restarted. Upon restart, everything was gone, no warnings. Approximately 1.5 miles later I was at highway speeds (70mph) when all the messages returned. I attempted to brake but there was no response, pedal went nearly to the floor. I only survived the incident by shifting into manual, downshifting to engine brake, and standing on the what I'm guessing was 5 or 10 percent brake pedal. Luckily there was an empty lane for me to do this in.

- Rapid City, SD, USA

Upon acceleration my "service ESC" indicator lights came on and my brakes became nearly unusable and loose steering. I pulled into a gas station and after 5 minutes the error cleared. This happened the previous week and the dealer said they could not find any codes in the computer.

- Shorewood, MN, USA

I started my car and I had 4 messages appear on the dash stating(service ESC, service trailer brake, brake system failure-62 mph top speed and steering assist reduced drive with care). I attempted to drive the vehicle in my neighborhood and noticed that I had lost power steering and when I went to brake there was a delayed response. It took the vehicle approximately 4 to 5 feet to come to a stop after braking. Also the ABS, check engine, brake and traction control lights were illuminated. I immediately tried to drive back home and when I drove in to my driveway, I smashed on the brakes and I almost drove through my garage because the vehicle would not stop immediately. I tried to press my onstar button for road assistance and lost all electrical power. I contacted onstar with my phone and had the vehicle towed to the dealership where I purchased the vehicle. Currently the vehicle is there being diagnosed for the problem.

- Deatsville, AL, USA

On April 2, 2019 I parked brefily for about 30 minutes. Upon re-entering my 2019 GMC Sierra truck with approximately 4500 miles and starting the engine I immediately received multiple warning messages on my dash panel. They were "service ESC" "service trailer brake", "brake system failure" "steering assist reduced" and to drive no faster than 62 mph. Previously prior to parking I had never had any problems whatsoever. I was in a location where I needed to go so I attempted to drive but found quickly that the brake pedel went all the way to the floor with very limited or basically no braking. The steering became very difficult with no apparent power assist. I drove it approximately two miles and got to a location where I could park. I turned the engine off and back on and the problem did not go away. I turned it off again and waited a couple of minutes and then heard an automated couple of clunk sounds from the front.. I started it up and everything was okay except the check engine light was on and stayed on the rest of evening. The next morning the check engine light was still on however about twenty minutes later I noticed it was off and everything has been fine since. I had planned to take it to the GMC dealer however with no problem showing now and from past experience with the dealerships I decided there was no need to schedule an appointment until the symptoms come back. I found on the internet later that there are numerous instances where this has happened to many other 2019 GMC Sierra owners. I feel that this is a extremely serious problem that needs immediate attention especially with the near total braking system failure!

- Owensboro, KY, USA

Vehicle screens including both the driver information area and the infotainment screen began flashing alerts/warning about disabled cross traffic alert, lane keeping assistance, and trailer connection/disconnection warnings. Alerts happened ever 2-4 seconds with screen flashes each time. Very distracting in the dark which makes it difficult to pay attention to the road. Almost rear ended another vehicle due to this issues.

- Helena, MT, USA