The 2020 Chevrolet Silverado has a known issue with the torque converters and they are currently on back order and our service manager told us we are able to drive with it messed up and that it would not cause anymore damage but it causes transmission lockup and engine lockup which results in loss of control.

- Orlando, FL, USA

Vehicle exhibited sudden loss of power at highway speed while in West Texas. Without warning, the vehicle displayed an "engine power reduced" message and the vehicle immediately slowed from highway speed to a maximum speed of 25mph. This sudden reduction in power required the drive to take emergency action to leave lanes of travel for the shoulder. On a road with insufficient shoulder-area, this could have resulted in a collision. Prior to the loss of power, a check engine light illuminated followed by a "Service Emissions System Soon" warning on the driver information display. The elapsed time between the messages and the loss of power was less than 5 minutes. The vehicle did not exhibit any erratic behavior at the time of the warning lights or prior to the loss of power. The vehicle is currently at Bill Estes Ford in Indianapolis, IN. Diagnosis is underway. Indications are that this is related to issues with the emissions control system. The vehicle was up to date on all service at the time of the incident.

- Brownsburg, IN, USA

Sunset jerking of vehicle, hesitation of vehicle when accelerator is hit at random times, when taking off from a traffic light or while cruising. If simmering need to get out of the way this could lead to vehicle hesitation and safety issues that could cause a crash. No errors were given in computer when dealership looked at it.

- Lithia, FL, USA

Torque converter faulty and told vehicle unsafe to drive. Only about 12,000 miles on vehicle. It was skipping gears while driving. It appeared initially very small and almost unnoticeable, but got worse over time going back a few weeks at least. The dealer has had the vehicle for over 30 days and cannot get the part shipped to them. They told me it MAY be shipped on October 22, while I dropped the car the first week of September.. Being told it is unsafe to drive, it definitely put us in danger driving it. Service Bulletin so they know about the problem: https://static.nhtsa.gov/odi/tsbs/2020/MC-10184489-9999.pdf

- Gig Harbor, WA, USA

Truck mileage approx 26000 miles. 2 wiring harness locations rubbed wires enough to cause wire to wire contact resulting in 1 location, burnt wires, according to service tech and the other resulted in truck malfunction. Threw numerous codes, transmission repeatedly went P, D, P, D....unable to put in park for sometime and then finally was able to. Additionally, when serviced out of state, was recommended to have service done for leaky oil pan. Upon returning to home state, truck went in for oil leak, was returned due to parts ordered because it's leaking at the rear main seal and not the oil pan. Waiting on this service to occur.

- Neenah, WI, USA

Locks will go up and down by themselves tranmission will downshift randomly broke down on highway service light service esc service parking brake and traction control vehicle only has 32,500 miles been complaining nothing getting done just want something else.

- Sutton , WV, USA

Transmission keeps over heating to the point that a message comes on display -€œTransmission hot idle engine-€ have had this same problem before to it to the dealership they installed a temperature bypass on and this problem continues

- Jasper , GA, USA

My truck felt like running over rumble strips. At 17500 miles they replaced my torque converter under warranty. Now at 24690 miles they had to replace again, under warranty. With less than 25000 miles it is on it's 3rd torque converter. I fear that transmission is being damaged and feel Chevrolet needs to admit there is a problem. My current dealer calls it a lifetime warranty, with lots of strings, but Chevrolet should protect me.

- Centerville, TX, USA

My Silverado 1500 has developed torque converter shudder again over the course of the past few days. My current mileage is around 42,000. This is actually the second time this has happened on my specific vehicle and the current torque converter is actually the second, as I had my other one replaced after being confirmed by a dealer several months ago. I have only managed to drive around 10,000 miles between the replacement of the first part and the start of the second one failing. For information regarding the first failure please use reference ID 11458308. This has not yet been confirmed by a dealer, but I'm scheduled to get this serviced on Tuesday. I am certain that is what this is as this happened so recently. Primarily while driving at highways speeds between 1500 - 2000 RPM my Silverado will continuously surge forward every few seconds with a notable clunking in the rear. While this is happening I will watch my tachometer bounce up and down approximately 300 RPMs constantly, despite the fact cruise is set and this is on flat ground. The problem gets worse while driving uphill and increases the magnitude of the clunking/shaking. Under light throttle acceleration my truck will have a vibration coming from under the vehicle that feels exactly like driving over a rumble strip. This was the sensation that helped the dealer identify this as torque converter shudder the first time. No warning lights were present at time of incident.

- Ripley, WV, USA

My truck had been randomly misfiring but the dealership couldn-€™t resolve the issue because the check engine light would go away on the way there. They were able to pull codes showing a misfire taking place and told me to return if it continued. The truck started having misfire issues again periodically fir the next 2 weeks but once the check engine light stayed on I scheduled an appointment. On the way to the appointment to Hidiburg Chevrolet we were on the interstate the cruise control kicked off, the service parking brake indicator, misfire flashing of check engine light, an ESC warning, and the traction control light came on as the truck randomly pulled to the right real quick then it stopped. Once the indicators went off all warning indicators were off and cruise control would not work. The dealership pulled codes and saw every cylinder misfired and that the other issues that took place. They tested everything and could not find the source and said that they had to wait until the indicator stayed on so they could see the issue. I left with no resolution and concern that when the misfiring could damage parts and the computer. I also fear that the issue if someone isn-€™t aware of vehicles not fixed could lead to severe accidents and potential for death if not fixed.

- Mulhall, OK, USA

Transmission shuddering and shaking while driving. Once in blue moon service light flashes for less than 1 minute then goes off with no diagnostic codes to show.

- Terrell, TX, USA

Vehicle had several lights on dashboard and messages, service brake system, engine power reduced, service trailer brake controller, service esc, service power steering. Vehicle lost power steering and brakes were nearly all impossible to push-€¦luckily I was near my house and got home safe, my family or myself could-€™ve been seriously hurt

- Rochester, NY, USA

Vehicle developed a sensation at approximately 28,000 miles similar to driving over a rumble strip. At approximately 32,000 miles this was diagnosed as a failing torque convertor. There are TSBs related to this for the 8 speed transmission, but dealer stated no known TSBs exist for the 6 speed. The truck is currently in the shop getting the torque convertor replaced and should be available for pick-up in the upcoming week. Rumble strip sensation occurred under light throttle acceleration and presented more frequently on an incline. There were occurrences on flat ground, but this was not as common. The vibration occurred most often at highway speeds of around 70 MPH, but also occurred several times in the ranges of 20-30 and 40-50 MPH. Tachometer reading during these occurrences was around 1,500 - 2,000 RPM. Issue was intermittent and would come and go. Most of the time the sensation was mild, but periodically the vibration would be severe enough the driver felt like he had been rear-ended. A separate symptom would occur while going up hills and the tachometer would bounce up and down approximately 300 RPMs with a noticeable surging sensation. When presenting, the vehicle would surge forward every few seconds until the hill had been crested. This only occurred at highway speeds with cruise set and would not present when the rumble strip vibration was present.

- Ripley, WV, USA

I was driving down I27 10 miles south of Lubbock when my 2020 Silverado 1500 3.0 Diesel engine stopped accelerating. I was going 75 miles per hour and the truck just stopped causing trauma for me and my family we were lucky enough to get to the side of the road. I ended up calling gm roadside assistance and they sent a tow truck to pick us and the truck up. The truck wouldn't engage into drive nor reverse. Once towed to the dealership, Gene Messer Chevrolet, in Lubbock, Texas, a service tech mentioned that a ton of the lifters bending push rods are going out on the late 2019, 2020 model silverado due to cheaper lifters added to the vehicles due to Covid shortage supplies. In essence, they wanted to get these models out with no regard to safety of the consumer. I'm not pleased with the craftsmanship GM has lined out on these trucks, this could've ended way worst. They jeopardized my families safety for profits. Right now the truck is still awaiting diagnostics still won't drive nor reverse per dealer service tech. It's just a terrible situation, the truck is new only has 25,500 miles on it, this needs to be recalled.

- Dumas, TX, USA

Upon starting the vehicle for the second time one day, when placing the automatic transmission into 'D' - Drive, it began to roll backwards as if it was in Neutral on a slight decline and the brakes had to be applied to avoid rolling downhill backwards. After attempting to place it back into 'P' - Park and back into 'D' - Drive and attempting to try 'R' Reverse to try to get it to move forward properly, it would not go forward. After several tries and restarting the vehicle completely, it finally attempted to move forward but would only do so at a reduced speed and would not respond to the accelerator pedal beyond a certain amount. After trying again, it appeared to move forward a bit better, but then upon stopping at a stoplight and attempting to pull out for a left turn onto the road, the speed again was reduced and I had to immediately place it into 'R' - Reverse to avoid an accident due to oncoming traffic. Finally I was able to get it to move forward a bit better and was heading directly for the dealership but since the power just was not getting to the wheels (transmission?) I pulled over and shut off the truck for a few minutes. Upon starting the truck again, it seemed to move forward better after that but had the 'check engine light' illuminated. The truck is at the dealership now, they have had it nearly a week and said they will not begin to look at it for another week at least since they only have 2 technicians who can look at it.

- Saint Charles, MO, USA

Whine sound possible torque converter does not go away. Surging or delay in switching into second gear upon first start up and put in drive.

- Navarre, FL, USA

Popping sound and hard shifting during low RPM between low gears.

- Falls Church, VA, USA

My truck has already had a shimmy feel in the transmission around 60 mph it shook and would slip gears. I just had it get worse this week. I also noticed that the front end is not shaking really bad from 60-75 mph on newly paved roads. The truck used to drive like a dream now its driving so rough and there is something going on!

- Dumas, AR, USA

The vehicle does not shift into 4WD low range. The vehicle has been taken to the dealer 4 times to correct the issue but the issue still occurs.

- Lviermore, CA, USA

The engine light has come on 3 times with a truck with only 9000 miles on it I took it to the dealership who gave me a code of P12A6 they told me Chevrolet is aware of this problem but has not come up with solution yet or even wrote a program to reflash the computer. Now I have a paper weight in my driveway and being that I live in a dual town trying to find a dealership that will fix it and provide rental car or truck. This defect can be multiple reasons with the engine harness wires chaffing or torque converter or transmission plus the whole electrical system not cranking over the truck from what I was told last time. Now I'm waiting till 730 to call a dealership see if they have a roll truck to pick it up and get it to a dealership where they can try to fix this problem.

- Lakeland, GA, USA