2018 Chevrolet Silverado Powertrain & Transmission Problems

My truck has been shuttering when accelerating and hard shifts periodically. The engine is also tapping. I have right at 74000 miles. regular oil changes and maintenances.

There was premature torque converter failure that’s has taken out the transmission unexpectedly. I was coming from a side street to get onto a main highway and as I left the stop sign the truck stalled upon take off and I was stuck half way on the highway and halfway on the side road. Until it jerked hard back into gear and pulled off. If the torque converter wouldn’t have caught in time then it could have cause a serious accident. The truck only has 95,000 miles and is a 2018 Silverado 1500 LT 4x4 with the 6l80e transmission. I had to park the truck until the following week when I could take it to dealership and they diagnosed it and quoted me for a new transmission and torque converter. Something needs to be done about these transmission as they are a serious safety concern. No police report was made since there was no accident but there definitely could have been.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at approximately 60 MPH with cruise control activated, the vehicle shuddered and multiple warning lights illuminated, including the check engine, check oil, fasten seatbelt, traction control, and brake warning lights. The vehicle experienced steering overcorrection and lost power. The vehicle was steered to the side of the road and slowly driven to an independent mechanic shop, where it was diagnosed that the engine needed to be replaced; however, the vehicle was not repaired. The vehicle was then taken to a dealer, where it was diagnosed that the first and second pistons and lifters needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 101,000.

A known radiator issue, with microcracks in radiator is producing a leak and will require replacement. There are many examples of this online for the model years 2014-2018, and are known by the manufacturer. I am having mine replaced with 95,000 miles on my truck.

I was driving on highway 20 in Cartersville ga at speeds around 55-60 mph with both of my kids the vehicle. All of a sudden my rpm’s shot up to over 5000 while losing acceleration control of the vehicle. I attempted to slow down and pull over on the side of the road to get out of traffic and was unable to get the vehicle to move forward or backwards at all. The rpm’s continued to rev out of control unless I was park. I had to shut the vehicle off for a few minutes, erase codes and attempt to move it again. I got it to move another few feet to just clear the roadway. I had to leave the vehicle on the side of the road and get both my kids out on the highway and wait for someone to come pick us up. The truck is now in the shop and I’m told that the torque converter shred to pieces and the my transmission was shot. This was a $7000 fix and the vehicle hasn’t even hit 100,000 miles yet. I also did the recommended service at 80,000 miles following the Chevy guidelines for my truck.

We purchased a 2018 Fully Loaded Chevy Silverado LTZ/Z71 (60,000) in 2019, with the idea it would last. After being super meticulous with maintenance and keeping this vehicle in top condition, we just passed the 110,000 mile mark. I have receipts of all the work/maintenance completed on this vehicle. I began to hear a ticking noise in the engine block, and the check engine light came on, so I pulled the codes and went to a local transmission/engine mechanic to find that I have a bent push rod (manufacture failure) due a failed lifter/AFM system. I opted not to take it directly to the dealer as they charge 179 base rate for diagnosis which could increase depending on the diagnosis needed. After numerous calls, I found this is a very common (7,500-11,000) issue with '18-'21 models. Explored my options only to find the 2021- 2026 engines are worse with issues involving crankshaft, engine seizures and an active lawsuit with the new 6.2L V8 engines. (Silverado, GMC Sierra, Tahoe, Suburban, Yukons) I was then pointed in the direction of speaking to the GM Manufacture directly, again. I had contacted them numerous times and was told the damages, even though are not preventable and are directly due to a manufacture error. I was told I must take my vehicle to a licensed service dealer to be diagnosed. I informed them, that I was already told my vehicle would not be covered so I did not feel the need to endure additional cost only to be told the cost would again, not be covered. I'm not seeking full payment; I even mentioned Goodwill assistance of which they denied; however, I'm without a vehicle and have received very little to no communication in resolving this issue, which is an issue I'm finding is happening to many others alike and General Motors Corp, is not taking any responsibility or accountability in this matter.

Transmission skips 1st gear and jumps and shakes vibrates. The transmission has to have a total rebuild

While pulling a 14' enclosed trailer when i left off the gas pedal there was a sudden low growl/vibration coming from the bed area of the truck. I was slowing down for a red light and it started at around 20mph. I pulled off slowly when the light turned green and was listening with my head out the window but everything seemed normal, about 2 miles down the road from the initial vibration/growl incident and running about 40mph the rear differential completely locked up causing the drive shaft to snap off the pinion yoke and left me sideways in the middle of both lanes with an enclosed trailer and alot of ticked off people cussing at me like i did it on purpose or something. Because the rear end was completely locked up, there was no way for me to move out of the road way so i had to sit blocking both lanes for 2 hours while waiting for a tow truck. There was no warning lights, the only kind of warning was the quick and subtle vibration/growling noise at the redlight.

-Transmission failed. - Driving down the highway and the truck just quit. (Morning rush hour traffic) -truck was towed to my mechanic -only made a weird noise the day before.

Torque converter failed which led to premature transmission failure at 115,000. Known common issue with 6L80 and TSB advising this. No recall

My transmission failed at around 69,000 miles. This was confirmed by the dealership. I bought my vehicle from and was covered under warranty. I purchased my vehicle in 2019 from a Dodge dealership and it came with a 10 year hundred thousand mile warranty for the powertrain. The tech indicated that the torque converter failed sending metal fragments through the transmission, coolant lines and transmission cooler. There were no warning indicators only hard shifting clunking when shifting and shuttering at different speeds.

The engine lifters and camshaft started to fail at 114,000 miles. I had to have it repaired at a dealership and it cost over $10,000. I had completed all recommended maintenance prior to the failure. 500 miles after that repair was completed, my transmission overheated and completely left me stranded on the side of the road. I had to have it repaired at a dealership which cost $$8,000

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle shuddered abnormally. No warning light was illuminated. The vehicle was taken to the dealer, and it was determined that the transmission was failing to shift into gear properly. The contact was unaware of which part needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 114,690.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle hesitated or shuddered while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to an independent mechanic and was diagnosed with transmission failure. Due to the failure, the torque converter and the transmission were replaced. The vehicle was repaired. The manufacturer was notified of the failure, and the contact was informed that there were no recalls for the failure under the VIN. The failure mileage was 85,377.

shudder while driving

2018 Chevy Silverado with 84,000 miles and the transmission is broken. Truck is currently in a shop to have a new transmission installed.

I purchased my truck in December 2018 which is a 2018 Chevrolet Silverado 1500 4x4 crew cab automatic from Servco Chevrolet Dealership in Waipahu, Hawaii and making monthly payments for my truck February of 2019 truck runs good and purchased the warranty also had my oil and service changed when time is due which I always kept up. [XXX] and mileage was 40k while leaving work to go home at a stop light was red once turned green I pushed pedal to go and truck just changed noise tone started to run like rough idle, loud tapping noise coming from the engine, shaking and check engine light came on almost causing me to get into an accident. I pulled on the side and checked what was going on and heard the tapping noise from the motor. So I made an appointment with service department with Servco Chevrolet Dealership where i bought my truck from and spoke with the service tech for my truck to go in for repairs due to issue. It took 2 to 3 weeks for repairs to be complete and service tech informed me that I'm not the only person to have that issue which had to do with the lifters and camshaft with these motors but GM never came out with any recalls due to how much people has the same motors with the same issue. So luckily it was still covered under warranty but said the problem might come back and would just replace the faulty lifters and camshaft. So in August of 2023 my truck has the same issue but wasn't covered under warranty anymore and mileage is 61k and missed the warranty repairs that was for the lifters which I got it scanned cause check engine light and same issue and code was P0016. So I called Servco Chevrolet dealership in waipahu again and spoke with the service technician which he told me I just missed the coverage of the warranty repair and only way to get it fixed I would have to bring it back for them to scan and roughly would range from 4k to 8k to get it fixed. So my truck is parked in my garage and hasn't been moved but paying for truck. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The transmission has been shifting hard. I have had it serviced to try and address the issue. It continued to shift hard, until suddenly slamming me down and locking me into first gear. It would not shift from first gear until I found a parking lot, placed it in park, shut the truck off and restarted it. This caused me to nearly rear end the vehicle in front of me. This has not been reproduced to date because the shop cannot get to my truck for 4 weeks and I cannot be without a vehicle for that long (won’t schedule and let me bring in the day before). There has not been an inspection done by anyone because I was able to avoid the collision, and the shop is too far out time wise. There were no prior indications/lights to warn me of a severe problem. The dealership informed me that this has been an ongoing problem with the valve body inside the transmission, but there is no warranty or recall for it. They were sure happy to take my money without telling me of the problems when I bought my truck.

Vehicle went into limp mode on I 65 in Indiana. Chevy dealer replaced tvb/ thermal bypass valve with newer version that opens at a lower temperature.Hard to get vehicle to the side of the highway. State Police arranged a tow truck to remove vehicle from highway.

Driving on the fwy going 73mph While running Transmission stopped working and I’m not able to accelerate to move forward and safely pull over to the shoulder. The problem was not been confirmed by the dealer or service center. The vehicle was not been inspected by anyone. There is no warning lamps Messages, or symptoms of the problem prior to the failure.