Abs, traction control and trailer break system failure. Check engine light comes on and goes off after 5 cycles. It also says ESC warning drive with care and it flashes also and steering reduced

- Seattle , WA, USA

The truck has 50,000 miles, purchased new. I don't tow or go off road. I take it to the dealer every 5,000 miles. While driving 65-70mph on the interstate (4-lanes), my dash lit up with five messages and the "Brake, Traction Control and Engine" lights illuminated. I applied brakes but the pedal went to the floor and the steering veered to the left causing me to move out of my lane. The truck then went to limp mode and I was unable to go above 43mph the remainder of the trip home. After taking it to my dealer the next day, I was told they "found air in the brake fluid system due to secondary seal failure in brake master cylinder, and was quoted a new cylinder (PN 86788482) for $1708.06. RESPONSE TO QUESTIONS: >Component failure: brake master cylinder (eBoost Brake Unit Assembly) / Brake System Failure >It was just me in the vehicle - brake failure on the highway put me and others on the road at major risk >Yes - After paying to diagnose, I was told this was brake master cylinder failure....GM issued a Customer Satisfaction Program (N202324120) for a limited number of MY2021 Silverado/Sierra trucks (mine is a MY2019) for dealers to replace the eBoost brake unit assemblies due to failure >Part has not been inspected by my insurance rep./I do not know if anyone else has inspected >The warnings illuminated on the dash at the time of brake failure while on the interstate 1. "Service ESC" 2. "Service Trailer Brake System" 3. "Steering Assist Is Reduced Drive with Care" 4. "Service Brake Assist" 5. "Brake System Failure 43 MPH Top Speed" 6. Also, the BRAKE, Traction Control and Engine lights illuminated

- Lititz, PA, USA

When driving my truck I lost all power steering got notifications to service abs in 7 days, service esp, and service power steering as well as a stability at light being on. Could no control my vehicle, restarted the truck 4 times, and it disappeared, garage could not pull any codes. This is VERY unsafe!!!!!! And has been issued a recall in past models and years. I could have been killed, for a problem the GM is aware of and have not issued a recall yet.

- Alton , NH, USA

i started the vehicle messages popped up stating service power steering drive with care, esc drive with care. at that time i had no power steering and the brakes were spongy. i then drove a short distance stopped turned off the engine and restarted with the same issues. drove home on the next day everything had reset. i then went and set a appointment with the dealer, they found nothing wrong no tripped codes nothing.

- Lake City, FL, USA

On 6/24 I drove my 2019 gmc Sierra denali truck 2 miles to the store was in there 10 minutes come out to start it and a ESC service warning message appeared then another message appeared say service power steering drive safe then my traction light came on then my trailer light I tried turning truck off then waited 2 minutes pumped brakes started it again same messages appeared I called my husband to tell him I said I will try to drive home as I preceeded to put in gear and back out of parking spot I lost my steering it froze up then lost my brakes I immediately put in gear turned off called husband to come get me as I was waiting I tried to start again when I did all messages were gone and I had steering as well.as brakes but at this point I was a an emotional wreck we just had a horrific scare in same truck on a major interstate my husband completely lost brakes and almost wrecked only to find there was a brake module reprogramming recall on the truck we had not been notified by mail yet so now this if I was driving on main road this could have been fatal so my husband called and dropped off vehicle on 6/25 told them every detail they said they call when done so on July 6th was told truck was ready when he arrived they handed him our keys and invoice said have nice day my husband got to truck read invoice only to find they did nothing to truck he went in to service said why isn't it fixed they said because no codes come up but if it happens again bring it back my husband said what if im driving it and it happens this can cause a fatal accident the service Mgr said just bring it in so he said so if my wife gets callhet husband was killed along with another family because his steering and brakes failed your going to tell her sorry for loss truck had no codes is now we have a truck we paid $58500 that is unsafe to drive i refuse to put my life or others in jeopardy im an emotional wreck I spent 2 days sick with worry can anyone help with guide us to some help

- Pylesville , MD, USA

When I go over certain humps in the road while grasping the steering wheel with both hands, the steering wheel slips out of its locking position and shifts up and down as I pass thru the hump. I have owned the vehicle 3 months and has happened on two occasions. While my vehicle is covered by warranty (so not looking for any monetary compensation) it almost caused me to lose control of my vehicle and seemed like a potential hazard for other drivers.

- Maple Grove, MN, USA

I have 48,000 miles on my truck, 2019 model. I just experience my steering wheel to get stiff without the possibility to maneuver it when it was stationary. My dash brings a two messages, " service ESC, " " service power steering." I went to the dealership to check if there has been any recalls and the answer the was negative. I did my research and on previous models there has been existing recalls on this electrical engineering issue. " 2018 GMC Sierra models and below, " I sincerely feel this should be file as safety complaint. The vehicle is to new have this sort of issue. It's not a mechanical failure but a electrical engineering problem.

- Eagle Pass, TX, USA

Steering freeze up on me son hit an electric pole head on rolled over few times. The front air bags did not deploy and the left back tire was deployed with the rotor. This happened out of the city limits coming into town.

- Odessa, TX, USA

Service power steering warning appears on dash and all power steering is lost. First time the power steering went out I was driving over railroad tracks. The second and third time the power steering went out it was mid turn and it force my truck off the road because I didn't expect it to happen.

- Westland, MI, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at 75 mph, the steering wheel ceased with several unknown warning lights illuminated. The contact coasted to the side of the roadway and turned off the vehicle. The vehicle was restarted however, the failure recurred. The vehicle was towed to sterling Buick GMC West located at (414 w fred & ruth zigler memorial dr, jennings, la 70546), but was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 28,000.

- Jennings, LA, 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

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

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

Purchased new, Dec 24, 2019. Current odometer 645miles. The vehicle was parked for about 15 minutes, when I returned to my truck and turned it on, multiple warning tones began to sound and the dashboard was illuminated with multiple warning lights (ABS, traction control, check engine, parking brake) and messages reading: "brake system failure 62mph top speed, " 'service trailer brake system, ' 'steering assist is reduced drive with care, ' 'service ESC.' I turned the vehicle off and on multiple times over the course of 20 minutes, exiting the vehicle, locking the doors, unlocking the doors, and starting the process from the beginning. I decided I wouldn't be driving over 62mph as I was only 2 miles from my home, so I decided to back out and drive home with full intentions of calling the dealership in the morning. When I tried to back out I realized that I had almost zero braking power, having to almost stand up on the brake pedal to stop the vehicle without giving it any gas, and turning was difficult (similar to manual steering in a vintage vehicle). I knew driving home would not be safe. I turns the vehicle off and on once more and all the warning messages and lights were no longer there. The check engine light remained on and is still on. I was able to drive home as though nothing happened, but am fearful this will happen while driving down the road, especially while my children are in the car. I have read multiple forums, this is not an isolated incident, with many others experiencing the same exact issue, sometimes while actually driving, in 2019 GMC Sierra and Chevy Silverado's. this is absolutely unacceptable and will result in injuries and deaths if GM does not resolve the issue.

- Birmingham, AL, USA

I own a 2019 GMC Sierra denali 1500 crew cab. After starting my vehicle and beginning my journey home. Sever warning indications of problems came on my dashboard system. While driving, the brake failure indicator illuminated and the vehicle would not immediately stop when depressing the brake pedal. Also, several warning indicators illuminated, including the power steering, service ESC, brake system failure 62 mph top speed, steering assist is reduced drive with care, service trailer brake system, ABS, and trailer towing warning message indicating that the vehicle would not accelerate above 62 mph. In addition, the steering wheel became extremely difficult to turn in either direction.

- Brandon, FL, 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

Brand new truck, denali, 10K miles, started vehicle with multiple warning sounds/lights, dash read "brake system failure 62mph top speed", service trailer brake system", steering assist is reduced drive with care" service ESC", power steering was very tough to steer, braking was super reduced with full weight on brake to try and get vehicle to stop. Have 3 children under 3 years of age and not acceptable GMC.

- Urbandale, IA, 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

The contact owns a 2019 GMC Sierra 1500. While driving various speeds, the brake failure indicator illuminated and the vehicle would not immediately stop when depressing the brake pedal. Also, several warning indicators illuminated, including the power steering, ABS, and trailer towing warning message indicating that the vehicle would not accelerate above 62 mph. In addition, the steering wheel became difficult to turn in either direction. The failure occurred on two separate occasions. The vehicle was taken to fairway Chevrolet (3100 E. sahara ave, las vegas, nv), but was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was 1,400. The VIN was invalid.

- Las Vegas, NV, USA

Electronic power steering went out when taking an off ramp, transitioning from a cruising speed of 65 mph. Very difficult to navigate the turn and could have easily resulted in an accident if it had occurred in a heavy traffic situation or in adverse weather conditions. Turned the vehicle off, sat for 15 minutes, started and the condition was gone. Took vehicle straight to dealer for repairs.

- Verona, WI, USA