2018 Chevrolet Silverado 1500 complaints

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 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.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that the vehicle was vibrating abnormally while driving 45 MPH. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who determined that the brake pads and rotors needed to be replaced. The mechanic later determined that the torque converter needed to be replaced. The local dealer was contacted, and determined there were no recalls on the VIN related to the failure. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that there was no recall coverage for the failure. The failure mileage was approximately 75,000.

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

There was fuel in the engine oil. Had to replace all of the injectors and the high pressure fuel pump. The shop I had it done at said this is known issue on these trucks - why isnt something being done?

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle briefly lost electrical power before returning to normal functionality. The contact stated that during the brief failure, the electronic power steering was not functioning properly, requiring increased effort to maneuver the vehicle. No warning lights were illuminated. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The manufacturer was not notified of the failure. The failure mileage was unknown.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who observed damages to the main wiring harness, due to a failure with the over molding protective shell. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 130,000.

At 25,000 miles, noticed "howling" noise coming from front end. Noise became louder as speeds increased. Lifted truck on jacks and determined the front passenger wheel bearing was failing. Required replacement.

In May 2023, my 2018 Chevrolet Silverado 1500 with the 6.2L V8 engine experienced a catastrophic engine failure at 82,986 miles. The failure involved the camshaft, lifters, oil pump, and other internal components. I paid $7,319.63 out of pocket to have the engine disassembled and repaired by a certified mechanic. I recently learned GM issued a recall (NHTSA Recall No. 24V266) for 2021–2024 vehicles with the same engine due to internal engine failures caused by crankshaft and rod bearing defects. Although my 2018 model isn’t included, the failure I experienced closely mirrors the conditions cited in that recall. I believe the same defect may exist in earlier models like mine. I’m submitting this complaint to urge NHTSA to consider whether the recall should be expanded to include additional affected years.

This 2108 vehicle had 56174 miles on it in October 2023 when the starter went bad, then with 56382 miles on it in November 2023 the lifter failed and the engine had to be replaced and then with on 56838 miles on it in Dec 2023 the engine light came on and the dealership replaced the canister and solenoid. All in a 3 month time. Chevy says it happens. Then we start reading it is a problem with their 2019 to 2024 vehicles. Maybe it goes back more.

Passenger side Upper control arm broke in two about to re-enter I75. Had been on I 75 and was going back on it when handling went wonky on Service road. You can see from the rust in the break this stamped part was cracked a while. Vehicle has not hit or run over anything since I have owned it. Had I been on I75 at highway speed it would have been deadly.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving 70 MPH, the vehicle lost motive power and the lifters collapsed. The contact was able to pull over safely. The contact stated that the engine and ABS warning lights were illuminated. The vehicle was towed to the residence. The contact called the local dealer, who informed them about the diagnosis and the cost for the repair. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 120,000.

The engine/ transmission has been rebuilt 3 times now and still having issues. The RPM goes up out of nowhere. Something is wrong with the truck. I have taken it to my mechanic over 10 times in the past year. It is still having transmission issues even after being repaired 3 times by a transmission shop.

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

I well maintained my 2018 Chevrolet Silverado, and now the motoer is failing, loss of power and just started smoking from exhaust, my mechanic said that the motor is in the process of blowing up. I made every oil change, and maintained the vehicle because I wanted it to last and be the last vehicle I had to purchase. It failing almost caused a bad accident on the interstate, but luckily I was able to avoid an incident and get to safety.

An independent service center confirmed that the water pump failed and fell apart. This water pump is a 4-groove pulley (part number 12685259) specific to my vehicle. Most other Silverados have a 6-groove pulley system. This 4-groove pulley water pump is unavailable from the dealer or any of the part stores, as they are on back order with no resolution or availability date. GM has notified some parts stores that this part has been discontinued and is no longer available. This truck is less than 10 years old. There are no other parts, either aftermarket or otherwise, to replace my water pump. The water pump is a vital engine component needed to prevent significant engine damage, and without it, the truck can not run independently without overheating. It is essentially the heart of the automotive cooling system, because the truck water pump function is to continuously circulate the engine coolant from the radiator to the engine and back to the radiator. I have had my truck in an independent service center since January 2025, waiting for this part, which is unavailable. I do have the original part at the shop available for inspection. There were no warning lamps, messages, or other symptoms of the problem before the failure; it just started making a clanking sound, and I immediately took it to a shop, and have been out of a vehicle for 5 months.

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.

While driving steering wheel will lock up and become really hard to move, making it difficult to maneuver out of the road

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 35 MPH, the vehicle went into LIMP Mode and was slow to respond as needed. The contact stated that there was smoke coming from the exhaust. While driving, the rear end locked up. The contact stated that the vehicle was slipping, and the vehicle shut off while driving. The contact stated that several unknown warning lights were illuminated. The contact replaced the spark plugs, coil pack, and spark plug wires with a misfire in cylinder #6. The contact stated that the fluids were replaced at an unknown local dealer prior to the failure. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 170,000.

Engine all of a sudden had no power or acceleration. Started shaking and thumping extremely loud.

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.

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)

Lifter problem misfire

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)

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 is: 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 typ

Bad torque converter cause transmission to totally fail. Had chevy do transmission flush,2 yrs ago. Back in Aug 2024, transmission started to slip,while driving,then totally failed,no forward or reverse gears,nothing, had truck towed into chevy dealer, almost $7000.00 later,transmission had to be replaced.

Transmission failed at approximately 120,000 miles. All maintenance had been done and 90% of miles on vehicle were highway miles. Appears as though there's a thermostat mounted on the exterior of the transmission that is prone to failing around the 100,000 mile area, and when this part fails, there is no transmission fluid circulating to be cooled, so the transmission gets so hot it fails. There are tons of youtube videos from many GM owners that have had to spend thousands and thousands of dollars to replace the entire transmission, when General Motors knows of the faulty part.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the contact attempted to depress the brake pedal; however, the brakes failed to engage as needed. The contact stated that the more consistently the brake pedal was depressed, the more the brakes failed to function as needed. No warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the brake vacuum pump needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.

Transmission locked up. Vehicle has low miles.

Truck suddenly started slowing down and smoke came from the tailpipe. No warning issued before the failure. Transmission replaced in January of this year also.

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 .

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.

Transmission failed and truck shut down mid road while going uphill. Shifting jumps when gears are switched and power jumps and goes down while stepping on gas pedal. At first it showed a check engine light but because i was traveling i had to skip and tried turning on again. It happened at least 5 times while on the road that day and now shifting is messed up and jumps while stepping on gas. I inspected and took to a mechanic for an inspection and said need a new transmission unless there is a recall because it happens to many 2018 chevy silverados 1500.

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

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

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.

Transmission jerks with hard shift and rough idle

Unknown

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.

I was driving on the interstate and then all of a sudden my vehicle started shaking while driving and by the time I got home in less than 15 miles, the truck was producing huge clouds of smoke out of the exhaust. I took it to a dealership and it was determined the lifters were bad, less than 6 months after I paid off my vehicle and the extended warranty expired. In repairing the lifters it was determined there was a misfire in cylinder 6 which in conjunction with the lifter failure, it damaged rods and pistons to such an extent full engine replace was deemed necessary. I had every maintenance and inspection done on time since the purchase of the vehicle by a local Chevrolet dealership and there apparently was no warning or concern that my lifters were going to imminently fail and/or cause extensive engine damage. My truck was in the repair shop for nearly a 1 year while I waited for a new engine Chevrolet agreed to pay for half of an engine even though I was out of warranty by a few months, but I was under the mileage on the warranty by 30k miles. The truck was not heavily used. Most miles were highway interstate miles from long road trips, but the vehicle largely sat undriven most days of the week for a couple years leading up to the engine failure.

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.

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.

Tailgate came open while driving and I lost items in the truck bed.

Tailgate came open while driving and I lost items in the truck bed. This is the second incident. I had double checked to ensure it was latched before driving.

Have had 3 rear door actuator locks fail. Refer to complaint 11538814. Will be able to upload files at request.

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?

Entire system (everything) shut down without warning, sometimes kick back on, and other times not at all. Extremely dangerous as it will occur no matter traveling on highway or turning a corner in a parking lot. There are discussion boards in which many people have experienced this problem and clearly it is because of "Bad Battery Cables" and common within the 2014-2018 models. My truck is currently in a dealership garage to have the cables replaced and I have to have a rental car while the cables are on backorder for 5 to 10 days (maybe longer). How is this not a "recall" when so common and so dangerous? Dealership could see in a diagnosis that power had been lost and communication lost, over and over and over. There has never been a dash warning light come on at all.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving at various speeds, the contact stated that the vehicle felt like the transmission was slipping. The contact stated that the transmission was shifting abnormally. Additionally, while the vehicle was stopped and idling with the brake pedal depressed, the RPM was fluctuating, and the vehicle was moving unintendedly. The contact stated that while attempting to accelerate the vehicle was jerking. The contact stated that the check engine and traction control warning lights were illuminated. The vehicle was taken to the dealer however, the dealer was unable to determine the cause of the failure. The dealer replaced the serpentine belt however, the failure persisted and became more persistent over time. The vehicle was taken to a certified mechanic who retrieved a DTC code for engine failure. The mechanic referred the contact to the manufacturer for assistance. The vehicle had not been repaired. The manufacturer was made aware of the failure and confirmed that the VIN was not under recall. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 92,000.

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