general problems of the 2018 Chevrolet Silverado 1500 - part 1

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.

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.

While driving on an interstate the vehicle violently shook and drive shaft ce off.

The contact's husband owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. The vehicle was taken to an independent mechanic where the contact was informed that metal shaving were discovered in the radiator due to a defective torque converter. The manufacturer was then notified of the failure and the contact was informed that there were no recalls on the VIN. The contact was referred to the NHTSA hotline to report the failure. The vehicle was not repaired. The failure mileage was 143,057.

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.

1. The components that failed were the transmission because the vehicle was driving and continued to slow down until it came to a complete stop gradually, and had to be pushed home. And also, there was an issue with the doors unlocking on their own and all windows rolling down by themselves. 2. The safety risk was the issues that happened without any knowledge of any issues at all with the vehicle. And the vehicle could have stopped on the highway, and another vehicle could have run into it, and it could have been a very bad incident. And with the doors unlocking and the windows rolling on their own could be exposed to unsafe environments and possibly theft of the vehicle or harm to the occupants. 3. Had a scan done, which showed the issues that were going on with the vehicle 4. I haven't had a chance to have it taken to the manufacturer because it broke down, and I was waiting for some help to get these issues repaired from the manufacturer. And needed from acc. 5. There wasn't no indicators or lights on when this happened? I was told by a coworker about the windows being down, and with further investigations, I found the doors were unlocked as well, which was done automatically without my control.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, there was an abnormal shuddering sound coming from the engine compartment. The contact stated that the stabili-trak warning light was illuminated. Additionally, on one occasion when the vehicle was started and shifted into drive(d), the vehicle failed to accelerate. The vehicle was taken to a dealer but was not yet diagnosed. The manufacturer was not notified of the failure. The failure mileage was 106,000.

Sometimes when traveling higher speeds (55-70)and braking going downhill, a hard brake will come out of nowhere. Not enough lock up the brakes or anything but enough to scare the crap out of you!!! if it would happen to a elderly person or a less experienced driver, they could probably lose control or wrack. With the power train. . . Sometimes when accelerating(from a stop or low speed)it seems as though it gets stuck in gear or skips a gear. You won't have any power then bam. . . Almost cerps the back tires.

I purchased a used 2018 Chevrolet silverado high country (VIN: [xxx] ) on [xxx], with 24,375 miles. On the day of pickup, the truck felt like it was driving over rumble strips. Dimmitt Chevrolet flushed the transmission and used the updated mobil 1 hp lv fluid. This worked temporarily, but the shudder returned. Carmax then sent the truck to burke’s transmission in sarasota, where they replaced the torque converter. However, the shop declined to rebuild the transmission, citing its complexity. I later brought the truck to cox Chevrolet in bradenton. Despite clearly describing the shudder, harsh shifting, and driveline clunk, they told me the behavior was “normal” and refused to investigate further, stating, “we’ll look into it once the unit fails completely. ” the symptoms have worsened. Harsh 1–2, 2–3, and 3–4 shifts are back. Shifting into drive causes a loud clunk and forward lurch. Cold starts cause bucking and sudden stopping. I’ve replaced the tires, bilstein 5100 rear shocks, and front suspension parts, but the problem persists. I signed on to a class action lawsuit against gm over the 8l90 transmission, but my claim was denied. This issue is well-documented and matches reports from many other owners. It affects drivability, safety, and long-term reliability. Gm and its dealers have failed to properly address this known transmission defect. I urge NHTSA to investigate further. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Multiple ttansmission failure, torque converter failure which leads to a completely destroyed transmission, vacuum pump to transmission fails which then completely destroys the transmission, transmission cooler failure which destroys said transmission. Due to parts availability, gm continues to replace with reman transmission which continues to fail. 6l80e transmission. Engine catastrophic failure due to stuck lifter, recommended oil weight starved viscosity and causes lifters to become lodged and rockers, valves and other internal parts to fail catastrophically.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 30 mph, the transmission became stuck in second gear. The contact pulled over the right side of the road and turned off the vehicle for two minutes. The vehicle was then restarted and there was an abnormal banging sound coming from the gear shifter. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The insurance company had not yet been contacted. The manufacturer was made aware of the failure and referred the contact to the NHTSA hotline to report the failure. The failure mileage was 141,000.

Hard shift when transmission is shifting around 70 mph and also transmission temperature keeps rising above 230 degrees. Shuddering when shifting after city driving.

Transmission temprature excessively high, there is a TSB#21-na-199 document[xxx] on thermo bypass vlave on 2018 trucks 6 speed transmissions. 200 degree transmission temp is too high. Service advisor originally said thats normal, after high temp issue a 5th time. I referenced the TSB #21-na-199 to the dealership service advisor, advisor said bring it in. Dealer replaced the original thermo 198 degree transmission bypass valve with gm's recommended 158 degree trans bypass vlave. Delaer proceeded to charged me $200 diagnostic fee and $167 for part and $258 for labor total cost was $658 from holz morots hales corners wisconsin. My truck was purchased in 2020 and I recieved the full 6 year warranty vehicle currently has 57,000 miles. Im within 60,000 drive train warranty. Dealer claims TSB is not part of the drive train warranty therefor not covered. How's that possible, a drive train is damaged by excessive heat and the thermo bypass valve of 198, creates excessive heat in the transmission destroying countless Chevrolet transmissions. My position if the thermo bypass transmission vlave is not part of the drive train, then what is it doing in my transmission which moves the vehicle? I want to file a complaint, I want Chevrolet to stand behind the product they built and sold . Dodging responsibility on technicality is how Chevrolet will lose buyers. I'm very unhappy with the way I was treated with zero responsibility for the gm product. The dealership would not provide any type of discount . . Too add insult to injury the dealer charged me a diagnostic fee after lengthy conversation on the problem which is absurd and offensive to any consumer. I paid and I said to myself, Chevrolet just lost a great customer because of a lousy policy claiming the thermo by pass valve is not part of the drive train . . . Bleed the consumer for a repair on the failures created by the manufacturer. Its under warranty on top of it all. . Best regards [xxx] information redacted pursuant to the freedom of information act (foia).

Transmission locked up. Vehicle has low miles.

We just purchased the truck from a Chevrolet dealership 6 days prior took it on a trip to missouri. Truck transmission shuddered then downshifted nearly causing a rear end accident behind us. Luckily the driver was attentive and did not hit us.

My transmission had a history of failing trans symptoms, all documented at the dealer from 10,000 miles until it ultimately failed at 127,000 miles. Those symptoms where a down-shift thud, confusion to what gear it should be in, shuddering, shaking and fluid temp running hot without towing a load. Was told by the dealer this was all normal, that the transmission was "still learning". Eventually the trans failed and was towed to the dealer. Dealer said that pieces of the torque converter were found in the fluid and building up in the filter, ultimately clogging it. I had all my recommended maintenance done at the dealer over the life of the truck. Once the trans failed I had an independent service center rebuild the trans, not wanting the same remanufactured trans that failed put back into my truck without any improvements made. No warning lights ever came on.

On or about [xxx] while driving through olathe kansas, the torque converter and subsequently the transmission on my 2018 chevy Silverado 1500 failed while driving in heavy traffic. While navigating to a safe place outside the high-speed traffic corridor, the truck would run at approximately 3000 rpm at a speed of 40mph. By sheer luck, we were not involved in a traffic accident. Replacement cost of the transmission unit was $7907. 88 and $800 for a rental truck while the dealer replaced the transmission. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Had to replace rear end now transmission is starting to act up like might be going out (the truck started by like having a shake as you drive ot not for long period just every so often to when I gave ot rhe gas the really loud whinning noise let off gas it stopped )looked up to see if any others and many others with the same model as mine is having same trouble as I am and have not seen any recalls,but many people have been having same issues .

Transmission slipping and shuddering when fluid warms up. Dealership diagnosed torque converter/transmission failure. Stated it may cause transmission lockup while driving.

Radiator replacement thermostat replacement bg coolant exchange mileage: 57,000 2018 -silverado-1500.

Transmission jerks with hard shift and rough idle.

Unknown.

Transmission failure & torque converter clutch failure, less than 90,000 miles on vehicle. This is a known issue with this year and model truck that gm is aware of. It has been inspected by the certified dealer and they are aware that this is a known issue. I don’t tow with my truck or do anything but drive it regularly. I was quoted $8,900 with a $2,000 core reimbursement.

Purchased this vehicle from a used car dealership 2 months ago. Now the transmission seems to be going out with 132,000 miles on it and funny noise from the transfer case. I have researched and found numerous complaints about the drive train on this vehicle and as a disabled veteran I don't have the funds to have it fixed. How can I get a recall in place for this issue?.

10 miles from home on [xxx] after thanksgiving with my children sleeping at [xxx] in snowy cold weather, my engine began to fail. Power was limited on hills and the check engine light would come on and go back off when on flat or downhill. The next morning I took my truck to the dealer that I purchased it from where I was told the lifters had failed and I need a new engine. 1000 miles after I replaced my engine my transmission failed completely requiring a transmission replacement. Immediately upon picking up the vehicle and going down a long hill in the area, engine breaking turned on as expected but as the truck tried to slow itself, after 2 or 3 downshifts, the transmission began making a loud grinding sound and while still going close to 50 mph, the speedometer showed 10-15 mph and the tach dropped to idle. The transmission was decoupled from the motor. When gas was reapplied it seemed to make the connection again and resume normal driving. I called the dealership whose techs did not believe me and told me that I could 'turn off' the engine breaking feature. The situation continued to worsen each drive and it would do it more often. This was unacceptable and they finally had a tech ride with me to experience it and immediately agreed there was an issue and reordered another transmission. The third transmission did not fix the issue and was experienced immediately. They are now guessing how to fix the issue telling me I have to replace the transfer case out of my pocket with no diagnosis, not sure what is causing it and have not fixed the problem. Videos would not fit in upload due to size. Videos show speedometer failure. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the vehicle stalled and lost motive power. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the engine and transmission were recently replaced, and the vehicle was released by the dealer and the failure occurred three days later. Additionally, the contact stated that the dealer installed a rebuilt transmission and engine, with a warranty up to 100,000 miles. The manufacturer was made aware of the failure and a case was filed. The contact stated that the repair was declined coverage under warranty. The failure mileage was approximately 41,000.

My truck has had transmission issues since we purchased it. At 79,000 miles the factory transmission finally went out and needed replaced. The truck currently has 81,000 miles on it and is already having transmission problems with the rebuilt parts. Background: the truck began having hard downshifts since purchase. Over the course of our ownership, we noticed it started struggling with shifting from 2nd gear to 3rd and 3rd gear to 4th. Constant "clunking" and shuttering when trying to shift. Approximately November of 2024 the truck suffered from the known gm transmission failures. It was almost "skipping" upon acceleration and had a very hard time with cycling between gears. The transmission began making a sound comparable to a normal operating diesel truck (almost sounded like the turbo engines upon acceleration). The truck was sent to the dealership and the transmission was replaced. However, since this replacement we are now experiencing similar symptoms to the previous transmission. There is a very hard downshift, there is clunking sound when the truck is trying to go from 3rd to 4th, and the truck has a noticeable gear burning smell when driven long distances.

Transmission vibrates when it approaches 35 mph and 65 mph. The vibration feels like rumble strips and last for 3 seconds.

The truck started shuttering one day it was like I was driving on the drunk bumps but I wasn't. Also it will drop gears when it shouldn't and at times it will kinda jump like it's losing power and don't want to go. I have taken it to my step dad who has been a transmission mechanic all his life and he said the transmission needs to be rebuilt but even rebuilding it won't solve the problem because it is a flaw in the way it was made so rebuilding it they use the same parts and everything so it will eventually do the same thing again it's all just a matter of when. He also had me go to another really good transmission guy and he said that we could replace the torch converter but still may need a rebuild l. I don't know if any that has to do with my passenger tire wear or my wheel bearing coming loose while driving only one bolt was holding it on when my husband checked it. The wheel bearing coming loose is pretty big safety problem. As for the transmission my step dad works at a transmission shop and he said they get probably 3 to 5 trucks a week having the same problem mine is having and I know they have been recalls on other trucks that have the same problem as mine just my one wasn't in the batch they recalled .

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 35 mph, the transmission failed to operate as designed and the vehicle started losing motive power. The contact stated that the vehicle returned to normal functionality afterwards. No warning lights were illuminated prior to the failure; however, the check engine warning light illuminated after the failure and remained illuminated. The vehicle was taken to an independent mechanic and was diagnosed with transmission failure. The failure persisted and the vehicle remained at the residence unrepaired. The manufacturer was notified of the failure. The failure mileage was unknown.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the vehicle intermittently shuddered. No warning lights was illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that the torque converter needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 47,000.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the vehicle was shaking and jerking. The contact stated that the vehicle failed to accelerate above 40 mph. In addition, the contact stated while driving uphill, the failure reoccurred. The contact was almost involved in a crash because the vehicle had failed to accelerate. The contact stated that the vehicle rolled backwards. The contact turned the vehicle off and restarted the vehicle and the contact was able to get to the shoulder of the road. The vehicle was taken to the dealer where it was diagnosed with engine and transmission failure. The contact was informed that the engine and the transmission needed to be replaced. The vehicle was not repaired. The contact stated that the failure had been occurring for over five years. The contact stated that the vehicle had been taken to the dealer several times due to the failure. The contact was informed several times that the failure could not be duplicated. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 27,000.

No check engine light come on until continued driving over 15-20 miles. Transmission slams into second gear when taking off or when stopping it may or may not downshift into first causing safety issues when in traffic. Possible electrical error or clutch inside transmission. On this model it is a sealed transmission so no way of identifying if metal shavings come out with a transmission flush. The issue only happens when vehicle is at temperature, if under and still cool drives perfect but as soon as it hits the temperature of 210 it slams very ugly.