general problems of the 2018 Chevrolet Silverado 1500 - part 2

Transmission jerking on downshift between 3/2 and 2/1 gears! I have seen gm has been aware of a recent transmissions issue with 2012-2018 plus 2019-2022 years.

The transmission has been slipping since the truck was brand new (<100 miles) and has always slipped but recently became worse and slips all of the time. This is a known issue with this transmission and should be included in the recall. The transmission slipped going around a curve and almost lost control of the vehicle.

6l80 transmission out of no where started kicking in and out of gear while in busy traffic. The motor would rev up and then kick itself back into gear multiple times. This wasn’t stop and go traffic also moments later I was at a light turning left as I did the vehicle start this losing power to the transmission except this time I was in the oncoming traffic’s lane trying to turn. Thankfully the other vehicles stopped although it could have ended much worse.

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 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.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while her husband was driving at an undisclosed speed, the vehicle was shaking erratically. The vehicle was taken to an independent mechanic where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA hotline to report the failure. The failure mileage was approximately 81,000.

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.

2 separate lifter failure incidents at 61,000 miles. One failure, happened on a busy interstate, while flowing with the speed of traffic. Truck started to misfire, jerk and blow smoke. I had trouble getting to shoulder of highway to get out of the speed of traffic. The issue was a collapsed afm lifter # 6. All the lifters were replaced on the passenger side on my dime. 450 miles later, I had to limp again to the repair shop that performed the previous repair to find afm lifter # 4 failed this time. Gm has been knowing about these lifter issues for many of years and this is a safety concern while on busy highways.

I've been in and out of dealers over the transmission shifting points and hard down shifts when almost stopped. And the a/c condenser has cracked on the side for no known reason at 75k miles except for the fact of bad manufacturing.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed and while attempting to accelerate, the vehicle hesitated. The contact took the vehicle to an independent mechanic where the vehicle was diagnosed with transmission failure. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to take the vehicle to an authorized dealer to have the vehicle diagnosed. The vehicle was taken to a dealer where the contact was informed that no assistance would be provided and referred the contact to the NHTSA hotline. The approximate failure mileage was approximately 128,000.

I’ve had to have the transmission replaced before hitting 123k miles there is a constant shake, tremble in the car that dealer mechanics cannot figure out and they relate the issue to the transmission electrical dashboard and ac lightning fixture burnt out.

The contact owns a 2018 Chevrolet silverado. The contact stated that the vehicle had experienced several safety related failures which included unintended acceleration. The contact indicated that the transmission to be replaced on multiple occasions due to the failure. The brake system had malfunctioned and caused the brake pedal to become hard to press. The brake master cylinder was replaced and the failure was remedied. Also while driving the power steering had failed causing the steering wheel to become difficult to turn in either direction. The steering rack was replaced and the failure was remedied. Also, a loud clanking noise was present under the vehicle while driving over a bump in the road. The vehicle's motor mount was replaced and the failure was remedied. The manufacturer was not yet notified of the failures. The failure mileage was 52,000.

Vehicle shuts off while driving in traffic at low and high speeds stabilitrak service light comes on and the vehicle dash goes dark radio and temp control panel go dark/ black.

2018 Chevrolet silverado 2020 was under warranty (22,000 miles)…. Felt a little vibration in my steering wheel and suspected a transmission problem and called the dealer’s service department. I told them what I felt and they said…yes you have a transmission problem (that Chevrolet knows about) bring it in and we will fix it. The fix was…change transmission fluid to synthetic. Now I was not comfortable with the repair but what can I do. I also know changing to the synthetic fluid can handle higher temperatures and will not breakdown as quickly. So my point is Chevrolet knows and knew about the problem and did not even think about a recall due to the expense it would cost them. Chevrolet expects me to absorb the cost of a manufacture problem. Last year was the start of my families transmission problems. It started may of 2023 with my 2014 silverado’s transmission (175,000 miles) and ended up getting it overhauled. The truck was not abused. November my 1st grandson’s 2018 silverado’s transmission failed, December 2nd grandson’s 2015 serria’s transmission failed. I also recently (3 days ago) found out my friend’s 2018 silverado went failed last year. All within a 6 month’s period. Now I have lost my 2018 silverado transmission (mentioned above) with 88,000 miles. This is just my family…I really can’t imagine what is going on country wide. All of the above events has prompted me to look into this problem. Every transmission shop and dealer is telling me Chevrolet knows and knew about the problem…I can go on. I am very concerned and will not stop at getting resolve with gm/Chevrolet taking ownership of the transmission problem. Sure I want help. . . But I also want to help others with the same problem.

Doing 65mph on interstate on cruise control, the transmission went into 'false neutral' and engine revs went sky high. Truck slowed quickly, almost got rear ended. After that, the transmission did engage and I barely made it home. Very dangerous! transmisison had to be rebuilt. Only 126,000 miles on a 2018 truck.

Vehicle wouldn't accelerate while in moving traffic. Rpm gauge would move but speed gauge would not and vehicle would not accelerate past 30-35. When I pulled over and put my vehicle in park then attempted to put in drive, it would not move. Transmission light turned on. Had it towed to a mechanic who after diagnostics, states it's definitely the transmission/torque converter.

Transmission issue!! jerks on downshift as well rpm ramp up after shift of gear in 2nd to 1st gears.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving at unknown speeds for an extended period of time, the transmission temperature, the traction control, and the check engine warning lights illuminated. The contact was able to continue driving. The contact stated that when the failure occurred on some occasions, he would come to a stop to allow the vehicle to cool off. The contact stated that on other occasions, the vehicle would begin to jerk upon releasing the accelerator pedal quickly. The contact also stated that it was difficult to shift into gears when the failure occurred. The contact took the vehicle to an independent mechanic, where it was diagnosed with an unknown failure. The contact stated that the transmission was replaced. The manufacturer was not notified. The failure mileage was approximately 130,000.

Unknow getting gas in oil at 62532 miles on it which can cause the motor to grenade. A lot of the 5. 3l on 2018 has this trouble from watching utube and using research, should be recalled and transmissions trouble as well.

Torque converter failed resulting in failure of transmission. Requiring complete replacement of transmission at the cost of $7100 from dealership.

The gm 6l80 transmissions have a faulty torque converter. When it goes out it causes a horrible vibration and drive train failure. Which leaves you stranded in traffic or on the side of a busy highway. These transmissions have been installed by gm since 2013 knowing they fail prematurely as early as 60k miles. It’s a running joke that this transmission saved repair shops because of the sheer amount of failures. With the cost passed on to consumers. There are several in detail breakdowns of the defect in this part on various social media platforms and internet forums. You can call any transmission shop across the nation they can confirm the defect. There where no warning lights prior to, during, or after the failure.

The truck excellerate when I stop at stop sign or red light, with my foot on brake pedal acts like it is going to take off without my foot on gas.

I have a 2018 chevy silverado that has issues with the transmission slipping into different gears as well as hard violent jerking even on the freeway ,and I heard hard rumbling in my transmission burnt out with only 76,000 miles, it's like they're designed to go out.

Transmission shifts very hard in lower gears and is very sluggish at times.

The contact owns a 2018 Chevrolet silverado. The contact stated that while her son was driving at an undisclosed speed, the vehicle shuddered. Additionally, the contact stated that the transmission was stuck on first gear. The vehicle was taken to an independent mechanic, who informed the contact that the transmission needed to be replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

Back in December of 2018 when I got my truck it only had a1000 miles on it and it has been down shifting hard it jerks hard I have reported it to the mechanic at the dealership at mitch smith in cullman alabama and that said OH it’s supposed to do that well now it’s out of warranty and they said it needs this that and the other.

While on the interstate with cruise control on, my truck started to vibrate while on highway, then shakes so badly it becomes difficult to grip steering wheel firmly. Slowly came to a stop and checked all four wheels. Waited on side of road until engine cooled down somewhat and then got off highway at next exit and made my way back home on side streets not driving over 40-45 mph. Vehicle is currently at dealer service department. Said it is normal, but transmission would be checked.

My vehicle has been properly maintained since new. At around 90,000 miles the transmission started making noise. I had trans filter changed and the noise abated. At 92,000 the car started shifting oddly. Several times on the highway the engine would rev and the car loses speed. Loud noises from the transmission and hard shifts. I most recently was unable to accelerate while getting on the highway. This is a truck, I have things I have to transport. I am unsure if I should continue to drive on the highway. I am going to my local dealer next week to explore repair options. I have learned that this problem is well-known to gm .

The automatic transmission in my 2018 Chevrolet Silverado 1500 with the 4. 3l v6 has experienced repeated failures and overheating events starting shortly after a scheduled dealer transmission flush at approximately 50,000 miles. Since then, the transmission has slipped under load, failed to shift properly, and routinely overheated—reaching over 270°f—without triggering a dashboard warning or entering limp mode. Multiple dealer visits confirmed internal transmission damage, including discolored fluid, metal shavings, and torque converter clutch failure. The entire transmission and torque converter were replaced under warranty, along with a redesigned bypass valve. Despite these efforts, the transmission failed again, showing further signs of overheating and debris in the fluid. The vehicle has been inspected and serviced multiple times by the dealership (karl Chevrolet in iowa) and gm warranty contractors. The issue persists even after complete transmission replacement. This condition poses a safety risk as loss of power and unexpected gear disengagement occurred during normal road use, including highway driving and towing. Transmission temperatures spiking well beyond gm’s dexron vi fluid thermal limits raise further concerns about systemic cooling design flaws. Warning signs included high transmission fluid temperatures (over 270°f), rpm surging, harsh downshifts, slipping, poor throttle response, and delayed engagement from park to drive. The manufacturer has been notified, and the issue has been documented with the attorney general of iowa. A gm case number was also opened, but no permanent fix has been offered.

My 10 speed transmission is failing, problem is a shutter in the transmission at various speeds. Have the shutter verified as not wheel balance problem, as all wheels were spin balanced. Upon looking up info online they said it could be dangerious and cause an accident. . . . My 2018 silverado with the 6. 0 engine and 10 speed transmision has only 42,000 thousand miles on it. . .

My vehicle has had transmission and engine problems that should not have been an issue until after at least 100,000 miles. At 11,577 miles I reported hard down shifting as well as a hard shift / kick when going from reverse to drive when the transmission would feel like it would slip and then kick when shifting from 1st to 2nd gear on automatic transmission. There were no codes and dealership said they couldn't duplicate problem. At 58517 miles the service 4x4 warning light came on as well as a shifting problem was continuing. A transmission valve body was replaced and a transmission service / fluid replacement was done under warranty or extended warranty. The shifting problem has continued. It has come to my understanding that Chevrolet put out a bulletin about changing the transmission fluid should solve the problem and to tell customers that some hard shift could be normal and not a problem. And I have heard about some class action lawsuits that have been filed. A second and more major issue was the 5. 3 liter engine failure that occured at 62,093 miles after having a tapping noise develop and some loss of power. But this issue began earlier at 40,125 miles when I had a fuel injection clean due to it running rough. Extended warranty replaced engine with a used motor and I was still charged $1158. 93 for amounts extended warranty didn't cover. My son's 2015 Silverado 1500 which I owned previously had to have the transmission rebuilt for just under $5,000 just out of extended or manufacturer's warranty. We don't pay $60,000-$70,000 to have engines and transmission fail before 100,000 miles and before the loans on vehicles are paid off. We shouldn't have to be paying a loan on a vehicle we can't even drive because it is in the shop for an extended period of time. At 62,298 miles after getting the truck back from the engine failure, the starter then failed and was replaced under extended warranty with $133. 76 cost going to me.

Torque converter was broken and destroyed my transmission just at 90,000 miles. I could easily have been stranded in major city traffic at any point if this had failed any earlier. This problem has been known in various GMC vehicles throughout the years. I have had a mechanic inspect and diagnose this problem. No warnings or symptoms were seen prior to the full failure of my transmission.

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 45 mph and approaching a stop light while slowing, the vehicle lost motive power without warning. The contact was able to restart the vehicle. The vehicle was taken to the dealer and the dealer stated no failure was found. The vehicle was taken to an independent mechanic and the mechanic stated that no failure was found. The manufacturer was contacted, and the manufacturer stated that there was no recall for the failure. The failure mileage was 69,000.

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 issues with 78500 miles, one owner, no hauling other than a boat. Headed to shop. . . Multiple complaints on 2018 transmissions why no recall.