The lifters were replaced leas that 2years under warranty at Pooler Chevrolet. They have stated this is a common problem with this vehicle and they had a lot of these vehicles come in with the same exact problem. Vehicle had no power, engine lights on and valve failure after being replaced before and the vehicle has less than 60,000 miles at 2nd failure. They stated the 1st repair has no warranty to cover such a catastrophic failure and I must pay out of pocket. I argued that it shouldn't have failed with less than. 60,000 miles any expectations of engine failure would be with massive miles and would be expected for some form.of major over haul. Caused emergency as i was in the middle of the interstate upon failure and I almost lost my life. I asked who was performing the repair and they won't answer the request about the repair. They stated it was sent out for repairs and not an in house repair. All repairs have been at GM certified center.

- Savanah , GA, USA

I was on the highway going 60mph and the engine light came on and it said -??low oil pressure, turn off engine-??. I could not safely pull over and had to drive a half mile to do so. The vehicle was towed to the service station near my house that I-??ve used before and the problem was a blown high pressure oil line. Technician said that the hose came undone at the crimp joint and that he-??s recently seen other Sierras with the same problem. I checked my GMC app and there were no recalls so I authorized the repair and paid the $919 bill. A few days later I did a google search for 2019 GMC Sierra oil line problems and got several hits from the GMauthority.com site. It-??s a known problem in Canada and Alaska (cold weather) and GMC will repair it at no charge if the vehicle was bought there and the repair is done by a GMC repair facility but they won-??t reimburse me because I bought mine in MA. It was 24 degrees the day the line blew. The problem is that the part is faulty and fails at cold temperatures. There should be a recall on the high pressure oil lines for all vehicles sold in cold weather states.

- East Sandwich, MA, USA

While driving down the highway at 70 MPH, the transmission slammed into gear and the engine died. A message appeared and said shift to neutral and press the ignition button. The check engine light also appeared. This had been a problem that first appeared at 48,000 miles. I was told that GM recognizes that there is an issue with the transmission, but that it would not damage the vehicle so it is not able to be repaired under warranty. The dealership advised that I should change the transmission fluid, so I did. The transmission continued to slam into gear thereafter. Fast forward to 55,000 miles where the truck completely died. The engine would not start and the truck had to be towed to a dealership. The next day the dealership told me that they had figured out the issue and that it was related to the fuse box and the ignition. I picked up my truck the next day, and drove less than a mile before the engine died again. I sat at the dealership for 12 hours and they had another answer for what was happening. They said that the shift lever was damaged and it was not allowing the battery to recharge. I live 400 miles away from where the truck broke down. I had to rent a vehicle to return home with my family from a trip. I now have to drive back to my truck in another state, and pay for the 12 plus hours of diagnostic work at $140 an hour as well as the cost of the part and the time to install it because the dealership stated that this is not covered by any warranty. I see that several people are dealing with a similar issue and I am frustrated that no one is willing to help us right this wrong. My grandfather worked for GM his entire adult life, and I will never own another one.

- Morrisville, FL, USA

Lifters failed. Damaged crank. Just out of factory warranty.

- Coventry , CT, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine oil cooler line detached causing oil to leak onto the ground. The vehicle was towed to the dealer where it was diagnosed that the engine oil cooler line needed to be replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 33,000.

- Streator, IL, USA

My 2019 GMC Sierra was traveling on the highway at 70MPH. The oil cooler line detached, and the truck shut down telling me to get over now. There was oil everywhere. I am shocked it did not catch fire. there was also 7 quarts of oil on the highway I called the dealer, and they are well aware of this problem. They were sorry but there is nothing we can do for you. They told me they do 1-2 oil cooler lines a month. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Acton, MA, USA

Every time I start the engine I get loud ticking noises. This is Lifter noise! I took it into the Dealership and they said the noise was normal. GM is known for having this Lifter problem in the heads. This can destroy my engine, causing premature wear on the lifters themselves.

- Turlock , CA, USA

While driving on a two lane road I proceeded to pass a slow moving vehicle, after accelerating from 45 MPH to 60 MPH my Check Engine light, Service Electronic Stability Control (ESC) and Service Electronic Brake System lights illuminated on my display. My RPMs increased before shifting gears and I noticed a significant loss in power. Thankfully there was not an accident when the incident occurred; however, if an oncoming vehicle or bad weather it could have been a different outcome. I took my vehicle to a GMC dealer to diagnose the issue where I found out my lifters for my valves are bad and my fourth cylinder is inoperable along with a bad CAM. A new vehicle at 65K miles on it should not be having mechanical issues that can pose a danger while driving, putting others and my safety at risk. GM needs to reevaluate the products and materials their using to build engines to ensure there are no flaws starting with the valve lifters.

- Bigelow , AR, USA

Purchesed a 2019 GMC AT4 6.2 w/16300 miles on it on April 19, 2021. Yesterday w/18700 miles are began to exprience a loud ticking sound coming from my engine. The ticking is associated with a failed lifter or lifters. Had to get my truck towed to the dealership for repair.

- Manor, TX, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that the check engine warning light was illuminated at start-up. The vehicle was taken to penske Buick GMC of cerritos located at 18400 studebaker rd, cerritos, ca 90703, (562) 733-3800, where it was diagnosed with needing the fuel sensor to be replaced. The vehicle had not been repaired as of yet. The manufacturer had been informed of failure. The failure mileage was 5,000.

- Los Angeles, CA, USA

On June 2, 2020, my vehicle was in the driveway and caught fire. I'm not sure how it started. I heard a loud boom and went outside and saw my truck fully engulfed in flames. I purchased the vehicle on 11/15/2019. It had only 4015 miles at the time. The vehicle was stationary. The last time it was driven was at 4:00 pm on June 2nd and at 9:58 pm it was on fire.

- Buna, TX, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that the electrical system in the vehicle was defective which caused delays with several driver functions. He stated that the vehicle would restart while in operation after coming to a complete stop. The contact also stated that the vehicle hesitated and jerked while accelerating without warning. The contact stated that several attempts were needed while pushing the push to start button for the vehicle to start. The vehicle was taken to mc-elveen Buick GMC (117 farmington rd, summerville, SC 29483) on four separate occasion to be repaired however, the failure persisted. The manufacturer was notified of the failures and filed two cases for the failures. The vehicle was not repaired. The failure mileage was 900.

- Monks Corner, SC, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 45-65 mph, the brake pedal was hard to depress. The steering wheel was difficult to turn. The ABS and check engine warning lights were illuminated. The check engine message, power reduced, and brake system failure-service ESC messages were displayed. The vehicle was taken several times to brown automotive group (4300 S Georgia St, amarillo, tx 79110, (806) 353-7211) to be diagnosed. Several codes were reset and an unnamed wire was replaced. The vehicle was repaired however, the failure recurred. The manufacturer was not contacted. The failure mileage was 15,520. Invalid VIN.

- Amarillo, 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

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

Dear NHTSA, I recently leased a 2019 GMC Sierra pickup truck. This truck is currently in the shop for the 6th time, and neither GM or the local dealership can seem to fix anything on this truck. Most recently, as yesterday I had my car in for the braking system. The dealership called me and said my truck was fixed. As I turned my truck on, the brake system light came on. I was told by the dealership to just drive it and it will go away. I do not feel this is a good/safe practice and GM is not helping me to get out of this unsafe truck.

- Chalfont, PA, USA

Brand new truck with less than 1250 miles on it! ABS brakes failed. Forced to drive on dangerous grade down Sierra nevadas with very limited braking. Message not to drive over 62 mph. Error code C0580 ABS braking and stability system, issue with ABS and error code P25A2 ECM engine system - engine & transmission not performing as expected. Other codes includec2A17, U0100 U026A & U0415. GMC knows about the problem and they have possible fix but is not issuing a recall. Dealer indicates reprogramed the brake system control module.war code 28yn28687675. Cleared the dtc and roadtest. Found the lights did not come back on and the brack system is working ok (just "ok") now. Also, GMC will not confirm the problem will not reoccur again.

- Newcastle, CA, USA

The contact owns a 2019 GMC Sierra 1500. While attempting to accelerate at highway speeds above 50 mph, the speed would not immediately increase and the vehicle drastically hesitated to accelerate. The failure occurred in sixth, seventh, and eighth gears. The vehicle was taken to ancira GMC (30500 I-10 w, boerne, tx) where the failure was duplicated. The contact was informed that the vehicle was operating normally. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 1,800.

- Fair Oaks Ranch, TX, USA

The contact owns a 2019 GMC Sierra 1500. While driving 25-30 mph, the engine seized without warning. The vehicle was towed to cummins Chevrolet Buick GMC Cadillac (300 N airport rd, weatherford, ok 73096, (580) 247-2263) where it was diagnosed that the transmission module needed to be replaced; however, the parts were backordered. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 2,100. The VIN was not available. Consumer stated taking from stop @ 25-30mph, vehicle came to a complete stop. Also in reverse, no traffic and wasn't going 55 mph.

- Weatherford, OK, USA