The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle was vibrating and shaking abnormally. The contact pulled over to the side of the roadway and turned off and restarted the vehicle and the shaking ceased. The contact stated that the failure became a persistent failure. The vehicle was taken to a dealer and independent mechanic to be diagnosed. The contact was informed that the vehicle had experienced transmission failure however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 84,000.

- Sarasota, FL, USA

Right lifter went out & damaged the CAM Shaft which in turn damaged the engine The vehicle has been sitting at the dealership since August 1, 2024 & confirmed on August 9, 2024, stating that a new CAM shaft would need replaced or a new engine, which ever we choose. NOTE: Vehicle only has 40,298 miles on it I was driving to work on August 1, 2024, service engine light came on & was blinking & the breaking system lights came on, this was the only warning that I received.

- Worthington, WV, USA

Check Engine Light came on while driving system scan states misfire cylinder 6 but resulted in the lifter being damaged as well as the cam shaft on a vehicle that has 108,000 miles. Prior to this I reported multiple times that it seemed that the transmission would slip and stuttered when on a incline and put in reverse. I was told it was a computer program issue and was charged for a software update which obviously did not fix the issue but ruined the engine.

- Harrisburg, NC, USA

While driving down a road in the moring hours, lost complete power and Truck shutdown. Thank God, I was able to pull off the road, since it was a Sunday Moring. Truck was not able to restart. If this had happened on a busy interstate. My wife and I could have been hurt or killed. Had the truck towed to dealer. Replaced the Transfer Case Module. Still don't know if what they put in truck was correct since mine was different than what was shown on computer specifications.

- Chickamauga, GA, USA

The torque converter of transmission went out on my 2019 GMC Sierra 1500 Denali with only 62072 miles. My safety has been put at risk daily, from intermittent shuddering and loss of power. My vehicle underwent a multi point inspection at Earnhardt Buick GMC confirming I will need a complete transmission assembly estimated to be around $7100. There were no indications or dash lights, the only reason I brought it in is from hard shifts, and intermittent shuddering.

- Mesa, AZ, USA

I have had frint driver and passenger ball joints go out 3 times all together.

- Webster Springs, WV, USA

When shifting to Park the vehicle shuts down but message comes up to Shift to Park and electronics stay on. Vehicle is off but unable to exit vehicle and lock it since the Shift to Park messages keeps dinging.

- Tallahasee, FL, USA

Transmission has created shuttering at speed and jarring total stop decelerating from 2nd into 1st gear. Beyond the transmission this vehicle completely stopped and lost power at 55 mph due to faulty valve lifters and pitted cam lobe. These were two separate incidents. Transmission cause lose of power on incline. Valve lifters cause lose of power at high speeds. The dash board read outs no longer worked and I was on a Highway without the ability to maintain speed.

- Middlesex , NJ, USA

The transmission causes the vehicle to shudder, lurch from a stop, at times it won't move forward (from a stoplight etc), it won't reverse other times. When driving down a freeway, the transmission allows the engine RPM to surge wildly as if I had put it in neutral and pressed the accelerator. This started at 85k miles approximately. It's into 90k now. The transmission had to be replaced at a cost of $6000

- Dallas, TX, USA

Oil cooler line detached from crimp while driving at highway speeds forcing the vehicle to an emergency stop on the side of the road. All oil pressure was lost immediately and entire underside of vehicle including tires, brakes, and wheels were all coated in oil. Known issue for same year, make, and model that has already been listed from NHTSA. But, apparently this VIN was not in the affected range.

- Elkhart, IN, USA

Transmission is slipping into neutral from a slow start and re-engaging with a hard bang to the point it feels like I-??ve been rear ended from a vehicle behind me. It-??s done it twice in two weeks and it seems to happen when I-??m leaving from a stop or slowing down and then come back into the accelerator.

- Anchorage, AK, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving approximately 20 MPH, the vehicle started shuddering. The contact stated no warning light was illuminated. The contact took the vehicle to the local dealer, but the mechanic was unable to determine the cause of the failure. The vehicle was not repaired but continued to experience the failure. The contact took the vehicle back to the dealer a fifth time and requested that the transmission fluid be flushed and refilled. The vehicle was repaired but continued to experience the failure. The manufacturer had been informed of the failure. The failure mileage was approximately 16,000.

- Edinburg, TX, USA

Stopping at a light and transmission jerks forward, almost causing me to rear end and other vehicle. Transmission jerks and clunks forward.

- Cibolo , TX, USA

When I first start the truck up and reverse out of my driveway once I shift it to drive it hesitates and feels as the transmission slips from 1st to 2nd gear. Makes it a safety issue due to the truck launching forward once the acceleration kicks in and the revolutions are high once the truck starts its speed from the hesitation.

- Glendald, AZ, 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

Oil coolant line snapped causing low pressure. Vehicle had to be turned off and towed to local garage.

- Buffalo, NY, USA

Transmission hesitate going into 2 gear

- Indianapolis, IN, USA

The vehicle jerks when I put it in reverse or drive. And when I'm going down the road while it shifts gears. It's be doing it since I purchased it (new). It was light at first but lately its been worse. I took it to the dealership a couple of months ago & they replaced something small & said it was fixed. But it still bad. My truck still only has 30K miles.

- Porterville, CA, USA

The transmission on this truck it-??s not good first they said it was the torque converter then they said it was the valve body, it work for a few days and I told them before they change any of that that the transmission was making a rattling noise they just patching the problem not fixing the problem told them to give me a new truck or new transmission but they just keep patching the issue I been at cullman dealership like 7 times, , also had a p25a2 code had a check engine light I told the dealership about and they didn-??t do anything about it bc the check engine light wasn-??t on anymore

- Cullman , AL, USA

when I bought the vehicle in October2018, I have taken the vehicle back to the dealership multiple occasions and they refuse to fix this issue. The transmission shifts from first to second gear or second to first gear is clunky, jerks forward and shifts without warning. While sitting at a stoplight, the vehicle will sometimes lurch forward several inches without warning even with your foot on the brake. Furthermore when accelerating between first and second year it's sluggish and takes several seconds to shift from first to second the engine Revs high.

- Bellevue, NE, USA