Vehicle jumps when shifting gears. When coming to a stop it jumps Forward. Hard shifting.
2018 GMC Sierra 1500 transmission complaints
Page 3 of 6: complaints 41 to 70 of 131, newest first, as owners wrote them.
Electrical system turns off power steering while driving Dashboard lights up like a Christmas tree service track service brake stability Had this service back in 2022 August the problems have resurfaced there are no recalls have spent lots of money and still failing Spent almost a year at the dealership fast forward to years later the same problem is occurring I am running out of money
When accelerating (at times) truck will shudder. Sometimes barely noticeable, sometimes violently. Was told by dealership that torque converter is going out and will be $4000 to replace but may not even fix issue. Looking online, appears that MANY (1,000’s) people are having same issue and that there is even a class action lawsuit about this issue. But no investigation by NHSTA yet, even though I can see many many complaints of similar issues
Shaking when accelerating. Sometimes so extreme it feels like you have been hit by another car. Random, inconsistent, and comes out of nowhere
The contact owns a 2018 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the engine temperature rose to 210 degrees and the vehicle started jerking. The contact stated that the failure also occurred while idling for a while, or while stopped at a traffic light while refueling, and before accelerating. The failure occurred once the engine temperature rose to 210 degrees. There were no warning lights illuminated. The vehicle was taken to a certified mechanic at a transmission shop who confirmed there was a failure with the transmission; however, the mechanic was unable to determine the cause of the failure. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 117,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at 45 MPH, the vehicle began to shudder, and he decreased the speed. The contact drove to his residence. The next day the vehicle was driving as expected until it became hot and began to shudder again. The transmission was not shifting as designed. The contact checked underneath the vehicle but failed to locate an issue with the transmission. The rear differential was hot and burned his fingers, but medical attention was not provided. The vehicle was taken to the local dealer, where it was diagnosed that the torque converter and transmission needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 22,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated that the vehicle failed to shift into gear as needed. The vehicle was taken to the dealer, where the contact was informed that an unknown part was loose. The vehicle was repaired. Additionally, the contact stated that while driving at various speeds, there was an abnormally loud sound coming from underneath the vehicle near the transmission. The vehicle was taken to the dealer, where the contact was informed that no failure was found. The contact stated that while driving 55 MPH, the vehicle started to decelerate unintentionally. The contact stated that there was smoke coming from the brake pedal. The contact pulled over to the side of the road and allowed the vehicle to cool down however, the brakes locked up unexpectedly. The vehicle was driven to the dealer to be diagnosed. The dealer informed the contact that the braking system had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 72,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated while driving 70 MPH, the vehicle started shaking violently, prompting the contact to pull over to the shoulder of the roadway. The vehicle returned to normal functionality, but upon the contact continuing to drive to his destination, the failure reoccurred. The contact stated that the RPM rapidly increased and the temperature gauge began to indicate that the engine was overheating. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the auxiliary transmission oil cooler line, resulting in damages to the transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to Special Coverage Adjustment: N182188930. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was 131,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving approximately 28 - 35 MPH, the vehicle started shaking abnormally. There were no warning lights illuminated. The contact continued driving cautiously. The vehicle was taken to the dealer to be diagnosed and it was determined that the torque converter had failed and needed to be replaced. The vehicle had not been repaired. The contact stated that the torque converter had been replaced twice with the first replacement performed at approximately 27,000. The manufacturer was made aware of the failure. The manufacturer had referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 66,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving on various occasions at various speeds, the check engine warning light illuminated, and the vehicle shuddered. Additionally, the drive(D) on the instrument panel started blinking. The contact stated that the engine revved, and the vehicle went into Safe Mode and the vehicle failed to accelerate as intended. The vehicle was pulled over to the side of the road and restarted. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was currently being repaired. The manufacturer was notified of the failure. The failure mileage was approximately 40,000.
Engine AFM has failed. No engine light was present at the time. A loud ticking noise was noted from the engine bay. Was taken to get diagnosed, and the AFM was replaced. The problem was then resolved. Transmission has been jerking and hard shifting through the period of owning the vehicle. No diagnosis has been made
The contact owns a 2018 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle was violently shaking. While at a stop, the vehicle slammed the brake pedal, and the steering wheel was shaking. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the failure was due to the transmission. The mechanic test drove the vehicle, and the vehicle was shuddering and violently shaking, and the transmission was hard shifting. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 42,000.
The contact owns a 2018 GMC Sierra 1500. The contact stated while shifted into reverse, there was a loud clunking sound coming from the vehicle and the vehicle failed to respond as intended. The contact attempted to shift to drive(D) and neutral(N) and then back to reverse(R) however, the failure persisted. The vehicle was towed to a dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 92,288.
Drive train:The truck suddenly lurches forward as I'm accelerating and after I've stopped. It's very scary to stop behind a vehicle and suddenly lurch forward. Thankfully, I don't stop too close to another vehicle. The truck also shudders and experiences significant delays in acceleration after coming to a stop and going again. Automatic Emergency Braking: the automatic emergency braking system spontaneously brakes as I'm driving when there is nothing in front of me. Thankfully, nobody has been following behind me when this happens yet. I had to turn the automatic braking system off in order to avoid being hit.
The contact owns a 2018 GMC Sierra 1500. The contact stated that while stationary at a stop light and attempting to depress the accelerator pedal, the vehicle hesitated while responding. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic where the vehicle was diagnosed with transmission failure. The contact stated that several unknown parts were replaced. The manufacturer was not made aware of the failure. The failure mileage was unknown. The VIN was not available.
We purchased our 2018 GMC Sierra 1500 z71 brand new at Fairway Buick GMC in Las Vegas, NV. Pretty much off the lot we noticed some hard shifting, but over the last year/around 60,000 miles it has become progressively worse. Come to find out GM is aware of a known defect in the transmission used in this make/model and several others by GM which causes hard shifting and jerking while upshifting and down shifting primarily between 1st and 2nd gear. This malfunction has caused the vehicle to activate "limp mode" which doesn't allow the vehicle to move out of 1st gear, while driving on the road, putting the safety of the occupants and others on the road at risk. This first happened in January 2024 while we were moving and towing a 6' U-Haul trailer. Luckily we were within a few miles of our destination and made it there safely. Upon taking it to Autonation Buick GMC, we were told they had seen this issue before and the only solution would be to replace the transmission and would cost roughly $6,000-$8,000, and that's with the generous 20% discount they were willing to offer. We opted to have the transmission flushed instead and it seemed to fix the problem temporarily. Then on [XXX] while decelerating and coming to a stop light it hard shifted from 2nd to 1st then the check engine light came on and limp mode was activated. It was 110 degrees on this day in Las Vegas when my husband was driving home from work, and again by the grace of God, he was only 5 minutes from home and made it there safely. However, what if this had occurred with our two young children in the vehicle and we were no where near home? We would have been stranded in dangerous conditions potentially putting our safety as risk. This KNOWN defect in GM transmissions is 100% a safety risk and this needs to be investigated and recalled immediately. There is an ongoing class action lawsuit against GM regarding this issue and I will be looking to get involved as well. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(
2018 gmc Seirra 1500 8 speed transmission. Making unsafe conditions while driving transmission tends to make hard shifts, jerks, hesitation when moved into gear, gets worse when stopping momentarily at stop lights and then trying to accelerate vehicle will not move. Makes hard shift and jerks then will accelerate in an unsafe manner.
My 2018 gmc 1500 transmission making noise grinding. It only has 75799 Miles on it. I just was told by Laura gmc that my transmission needs replacing. I think gm should cover that. Dealer charging 7800.00 to replace it. That's not right the truck doesn't have that many miles on it. Please help
Transmission started to shutter at 24000 miles. Dealer said couldn’t find anything. ABS and Stabilitrack light came on at about 40,000 miles off and on. Both these problems could result in a crash. On freeway or streets. The display information/ radio has a mind of its own. Connects to any phone number or start the on star call and etc. it takes your attention off the road and can result in a crash.
Hard changes with transmission like a car has hit you from behind. It has had a hit in the transmission changing gears since 15,000 miles but it has progressively gotten worse and at 67k it’s enough to knock you to change steering direction.
The contact owns a 2018 GMC Sierra LD. The contact stated the vehicle experienced jerking and shaking. The contact also stated when the accelerator pedal was applied, the vehicle made a loud noise and lunged. There were no warning lights illuminated. The vehicle was taken to the dealer where a transmission flush and an alignment were performed. However, the contact stated the failure persisted. The manufacturer was notified of the failure and a complaint was filed. The failure mileage was approximately 30,000.
At 66,963 miles my transmission failed while driving. The check engine light came on and the car would not shift out of first gear. The car was towed into Gilchrist GMC in Tacoma WA. and I was informed I needed a transmission replacement, cost of $7552.24. Come to find out there is a class action lawsuit currently filed for GM owners of this transmission, claiming some 800,000 GM products contain a knowingly faulty transmission. A recall should be in place being that nearly a million vehicles are affected by this.
I have been experiencing ongoing issues with the transmission of the vehicle I purchased in 2018. Despite it being a brand new vehicle with only 10,000 miles, I have had to bring it back to the dealer multiple times for transmission-related problems. We have tried changing the transmission fluid periodically to address the issues with shifting and shuddering, but the problem has persisted throughout my ownership.
I have a 2018 GMC Sierra 1500, it is over 5 years. So we all know our warranties are either expired and meaning out of pocket expenses will come. I mainly drive back and forth to work so my vehicle only 43,924 miles to be exact. So tell me why GM allows us to purchase a vehicle with defect oil in the transmission knowing the Torque converter will start shuttering causing some of us to purchase a new transmission and if we lucky a transmission flush. So yes I took it to the dealership causing me over $850 to have a diagnosis, computer hook up, and a transmission oil flushed and replaced. I was told this is an 45000 miles issue and it's not considered a safety issue. Personally, if I didn't know better I could had gotten rear ended and yes this should be a safety issue. Our family would like this issue addressed and be reimbursed for my expenses. Thank you!
My 2018 Sierra began experiencing severe shuddering while driving down the road. The dealer said it was caused by moisture getting into the transmission fluid and contaminating it. In my ownership of dozens of vehicle's this has never happened before. This formerly inexpensive minor fluid change requirement morphed into a $618.00 major surgery just to fix a problem that should have never occured. If the fluid was contaminated by moisture as the dealer explained, it's a design defect which caused it and nothing I have ever done. I am still unsure as to if the transmission or torque converter may be damaged. The manufacturer should be liable for the cost to fix this not me!
The vehicle steering wheel shudders at speeds from 40-55mph. The steering wheel shudders at 2-second intervals and is constant between those speeds. At first, I thought it might be one of the safety systems. It is not. This is unsafe and GM should be held responsible.
Transmission shudder at different speeds while driving.
On approximately July 23, 2023, I noticed the vehicle transmission shifting hard from 1st to 2nd gear and then during the following week, this began to occur every time I drove the vehicle. There were no warning indicators appearing on the vehicle for this problem during vehicle operation. Then at higher steady speeds, the engine RPMs began to suddenly and intermittently surge slightly higher, and the steering wheel would shudder for a few moments. This began to occur more frequently and I became concerned that the transmission would catastrophically fail, causing a crash and/or personal injury. At that point I called a local dealer to make an appointment for a transmission oil change and inspection. The vehicle was taken to a local dealer on August 21, 2023 and they confirmed that there was a problem with the transmission, though at this time final diagnosis is pending. To my knowledge, the vehicle or component has not been inspected by the manufacturer, police, insurance representatives or others since I took it to the dealership on August 21, 2023.
The contact owns a 2018 GMC Sierra 1500. The contact stated while driving from a complete stop and depressing the accelerator pedal, the engine revved but the vehicle hesitated to respond. There was no warning light illuminated. The contact stated that the failure reoccurred several times. The vehicle was taken to the local dealer, where it was diagnosed that the transmission was slipping and needed to be replaced. The vehicle was repaired. Additionally, the contact stated while driving 60-65 MPH, the vehicle started vibrating and shuddering. The check engine warning light was illuminated. The contact was able to drive to her nearby destination. The vehicle was towed to a second dealer Liberty Chevrolet (105 Cooley Way, Villa Rica, GA 30180) where it was diagnosed that the driver's side lifters had failed and needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was towed to a third dealer, Prince Chevrolet Buick GMC of Albany (2701 Ledo Rd, Albany, GA 31707) where it was diagnosed that passenger's side lifters needed to be replaced. Additionally, the dealer diagnosed that the camshaft needed to be replaced. The contact was advised that the warranty would cover a portion of the cost of the repair and she was responsible for the balance. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 84,267.
The contact owns a 2018 GMC Sierra 1500. The contact stated that while depressing the accelerator pedal, the vehicle failed to properly accelerate. The vehicle was towed to the local dealer who diagnosed the vehicle and determined that the transmission was faulty; however, the part needed to fix the vehicle was not available. The vehicle was not repaired. The manufacturer was not yet notified of the failure. The failure mileage was 27,477.
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