2018 Chevrolet Silverado 1500 transmission problems

Filed Sep 16, 2026 · Transmission · VA

The transmission went out before it hit 100k miles. It had to be completely replaced which cost me several thousand dollars.

Filed Aug 23, 2026 · Engine, Transmission · TN

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.

Filed Aug 4, 2026 · Transmission · LA

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.

Filed Jul 9, 2026 · Electrical, Engine · 101,000 miles · ID

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.

Filed Jul 7, 2026 · Engine, Transmission · TX

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

Filed May 29, 2026 · Engine, Transmission · OR

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.

Filed May 8, 2026 · Brakes, Suspension · CO

Vehicle was determined to be unsafe to operate per inspection performed by Mike Maroone Chevrolet on 8/26/24 immediately after I purchased from Rocky Mountain Auto Brokers in Colorado Springs on 8/8/26. It was discovered by customer immediately after sale that bank 2 catalytic converter was restricted internally (after Rocky Mountain failed to correctly diagnose and repair 3 times before and after purchase). Customer discovered emissions warranty extension and took to Maroone Chevrolet. After warranty repair inspection of vehicle determined it was not safe for customer to pick up and drive vehicle and generated a report and video showing front suspension damage so loose that could cause crash and vehicle was towed back to Rocky Mountain for repairs. Rocky Mountain has failed to provide any documentation on these repairs and many subsequent repairs including transmission replacement after many written requests. Customer cannot verify if vehicle repairs brought vehicle back to a safe condition. Almost anll repairs by Rocky Mountain has failed resulting in missing bolts, bolts falling out after transmission replacement As well as failure of many CV Axel replacements documented in their own records. Extended Warranty Company also refuses to provide documentation of transmission replacement after they supplied the part (transmission) to Rocky Mountain for installation. Customer cannot verify if in fact transmission was replaced as it was painted black. Any warranty on replaced transmission cannot be verified and they also have refused to provide documentation or serial number verifying same after many written requests. Customer would like to submit a detailed letter and safety inspection report with further info and details in addition to this online form complaint as this is a complex case and additional info will further prove up these allegations. Some documents provided by Rocky Mountain are inconsistent with customer complaints and do not reflect accurate info.

Filed Apr 21, 2026 · Transmission · GA

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.

Filed Mar 13, 2026 · Engine, Transmission · OH

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.

Filed Mar 6, 2026 · Transmission · TX

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