Multiple warnings popped up on the screen telling me "brake system failure" "ECU failure" "trailer brake failure" and "max speed 62 mph." After that the brakes become almost non-functional. I had to stand on the pedal with both feet and was unable to slow down enough (45 mph traffic) to had to go into the E-lane to avoid an accident. Truck also gave dtc P25A2. I can't stress enough that it wasn't just degraded braking, it was almost nothing at all. It took nearly 1/8th of a mile to get it stopped on a mild downhill grade.

- Maineville, OH, USA

Started with ignition button put in reverse backed up went to stop and realised brakes are not working as usual had to stand on pedal to stop. Checked mirrors to make sure I didn't hit anything I didn't.thought maybe I hit side of brake pedal so I applied the brake again and figured I lost brake boost. I checked for warning lights there were none.brakes did not work properly until I restarted truck.then I felt the pedal reacted properly. Called dealer they did a recall but recall didn't specifically match my brake loss. I can only hope it's fixed

- North Andover, MA, USA

My pickup started, I pulled out on road and sped up to 35 mph, when I stepped on brakes to slow down they were unresponsive, so I began pumping. They felt very hard to pump and were not slowing the truck down. Lights came on saying service brakes etc. As I coasted to try to slow down off side of road. I had to keep pumping the brakes down to floorboard and I?M not sure they were even working. I lost power steering and was almost involved in a serious rear-end collision. 4 messages appeared on digital dash while driving. Service ESC, brake system failure 62 mph top speed, service trailer brake system, steering assist reduced. I had to press brake pedal to the floor with extremely excessive force to get truck to stop. This failure could have easily resulted in vehicle accident, or even a fatality accident. I doubt I will ever carry my family in the truck again due to this and I certainly will not allow my children to drive the truck. This is the 5th time this has happened to my truck.

- Dallas, TX, USA

I have had the 2019 Sierra 1500 AT4 with 6.2 liter engine in the shop (8) times since purchasing it in late Aug 2019 for multiple issues, including the issues relating to the brake software recall. This resulted in me rolling through a stop sign without any brakes. Luckily there was no oncoming traffic. As an engineer, I have no confidence that the issue has been fixed long term by GM. My family will no longer ride in the truck with me. As a result, I have retained an attorney for the purpose of filing suit against GM for selling me an unsafe lemon. Even further concerning is the fact that on (2) occasions the parking brake has engaged while driving down the highway at 55 mph. One time while in 4WD in snow, and the other time while in 2wd on dry pavement. The first time there was a diagnostic code associated with the parking brake engaging randomly. The second time, there was no diagnostic code present. The first issue with braking began 11/14/2019, and the most recent issue occurred on 2/2/2020 even after all recall "fixes" have been applied.

- Clinton, IL, USA

I was driving to work in snowy conditions and on a very slight bend on a flat public highway my truck starting sliding and as I turned the wheel and applied the brakes the usual action of antilock brakes did not work as intended allowing me to steer clear of the obstacle causing me to wreck.2018 GMC Sierra 1500

- Mount Pleasant, PA, USA

On two occasions the vehicle lost the power brakes function. Numerous dash alerts stating including "service ESC" "brake system failure 62mph top speed" "service trailer brake system" "steering assist is reduced drive with care" along with a check engine light. The brakes pedal had to be pushed to the floor to slowly come to a stop. Both times were in a parking lot. One of which times I was moving. Dec 26th and again on Jan 16th 2019. The vehicle was towed to the dealership on both incidents.

- Rock Island, IL, USA

4 messages appeared on digital dash while driving. Service ESC, brake system failure 62 mph top speed, service trailer brake system, steering assist reduced. I had to press brake pedal to the floor with extremely excessive force to get truck to stop. Note that none of the 4 messages state the vehicle will be extremely difficult to stop or shouldn't be driven, but rather the vehicle wouldn't exceed 62 mph. It should have reduced the speed to much less, maybe 10 to 15 mph. This failure could have easily resulted in vehicle accident, or even a fatality accident. I doubt I will ever carry my family in the truck again due to this and I certainly will not allow my children to drive the truck.

- Malvern, AR, USA

My pickup started, I pulled out on road and sped up to 35 mph, when I stepped on brakes to slow down they were unresponsive, so I began pumping. They felt very hard to pump and were not slowing the truck down. Lights came on saying service brakes etc. As I coasted to try to slow down off side of road. I had to keep pumping the brakes down to floorboard and I'm not sure they were even working as I coasted safely off side of road to a stop, I turned engine off immediately calling my dealership service department. I wouldn't drive it any further as I felt I had no brakes whatsoever. Dealership had it towed to their shop. The next afternoon I spoke with them. They stated it was a known issue and that a recall had been issued (see recall number below) but I never received it. I did receive a seat belt recall so I know they have my correct address. I was told it was some problem with a module and I can come puck truck up. It was scary when it happened. I purchased this pickup new on August 21, 2019. Recall number: Recall-N192268090 (per dealership service department)

- Redmond, OR, USA

Started truck and many services lights came on service ESC, brakes lights, steering lights all warnings. On star called and said I had a brake failure. I was backing out of driveway and could hardly stop the truck as I was approaching the road

- Clinton, MS, USA

After my recall was fixed my truck locked into 4 wheel drive and I lost control of all my safety features. My lights would not work. They fixed what they said was a glitch in the recall and 3 weeks later my engine light came on again and my brake system started to show lights. They recalibrated the brake system recall again.

- Roanoke, VA, USA

After having a recall issue fixed on the ABS braking system of my truck, I remoted started it from GM's onstar app, which caused the dashboard to light up like a christmas tree and give a number of errors, including a solid engine light. GM onstar diagnosis identified that there is now another issue in the ABS braking system. There has been no mechanical failure at this point, but I am concerned their maybe as others with this same issue have seen mechanical failure.

- New Boston, MI, 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

The contact owns a 2019 GMC savana. The contact stated that while driving at 5 mph, several warning lights illuminated in the instrument panel. The contact attempted to depress the brake pedal which failed to operate as intended. The vehicle was taken to bert ogden Buick GMC 4216 us-281, edinburg, tx 78542 (956)205-0761 to be diagnosed which was still pending. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 10,000.

- Edinburg, TX, 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

After starting my 2019 GMC Sierra, I received a number of warnings including: 1. service trailer brake system 2. steering assist is reduced drive with care 3. service ESC 4. brake system failure 62 mph top speed 5. check engine light as I started to drive, I realized I had a very difficult time stopping as I had to press the brake very hard. I was in a parking lot and only going 5 - 10 mph, but still had difficulty stopping. I took the vehicle to the dealership. They investigated the issue and made a software update working directly with GM, which is now a current recall. The truck has done it again as of today so the sw fix is obviously not correct.

- Saint Charles, MO, 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

The contact owns a 2019 GMC Sierra 1500. The contact stated that after the vehicle was restarted the vehicle experienced a brake system failure. The contact stated that the brake pedal was depressed but failed to operate to slow the vehicle as intended. The contact stated that the failure was intermittent. The vehicle was taken to town and county GMC (1040 paseo del pueblo sur taos, taos nm) who reprogrammed the brake module however, the failure persisted. The manufacturer was notified of the failure and a case was filed. The failure mileage was 12,000.

- Taos, NM, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that the vehicle had experienced an unintended acceleration and would surge forward. The vehicle also experienced a brake failure causing the vehicle to erroneously drive. During the failure, the messages "trailer brake failure" and "do not driver past 60 mph" had massage had displayed. The local dealer bob robinson Chevrolet (155 robinson dr. Triadelphia wv) was notified of the failure. The vehicle was not repaired. The VIN was not available. The failure mileage was 3,100.

- Follensbee, WV, USA