GMC Sierra Complaints (2018)

371 consumer complaints on file.

#11600427July 9, 2024
POWER TRAIN, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11598744July 3, 2024
TIRES, TIRES:TREAD/BELT
Purchased the tires on 10-25-2021 and with only 16,000 miles on the 4 new tires; we have non-normal cracking on the side of the Thread. These tires are only 3 years old. P275/55r20 We are contacting the tire manufacturer and also the tire service center for help under the 60,000 mile warranty. Bridgestone Dueler A/T Revo 3. The tires should not be cracking for any reason and should not be cracking due to dry rot or stress on the tire. Used on a 2018 GMC 1500 Serria.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11597984July 1, 2024
AIR BAGS
all side airbags deployed for no reason on my driveway at a speed of less than 15 miles per hour. the front airbags did not deploy. no accident. no damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11597443June 28, 2024
POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596471June 25, 2024
POWER TRAIN
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)(
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592367June 4, 2024
STEERING, SUSPENSION
I have a 2018 GMC Sierra 1500 that I bought new in Oct of 2018 and it now has 15,756 miles on it and was still like new at the time of failure. On May 23rd I was driving the truck when the driver suspension suddenly had an structural failure (mostly the ball joint coming out of the control arm) causing the front right side of the suspension to collapse while driving. This caused the truck to go left of center into on coming traffic resulting in a traffic accident.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11591650May 30, 2024
SERVICE BRAKES, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
I purchased my Sierra in 2021 and 2 weeks after purchase I got a warning for service stabilitrk and another for trailer brake system. This is very very annoying and also has my abs light on. My next issue is a code u510 for active grille shutter assembly. Please fix these issues as they are very common and unsafe. Not to mention as much ad I paid for this truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11588888May 15, 2024
UNKNOWN OR OTHER
Vehicle is shaking at highway speeds
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11587154May 6, 2024
VEHICLE SPEED CONTROL, POWER TRAIN, ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11586056April 30, 2024
SUSPENSION
The contact owns a 2018 GMC Sierra 1500. The contact stated that while the vehicle was at an independent mechanic for an oil change, the independent mechanic performed a full inspection of the vehicle. The contact was informed that the CV axles were corroded, and the CV axles needed to be replaced. The vehicle was repaired. The contact was advised to report the failure to the dealer. The contact informed the dealer of the failure. The contact stated that the vehicle had been taken back to the dealer several times for repairs, including the transmission replacement, radiator replacement, and a full suspension replacement. The manufacturer was made aware of the failure. The failure mileage was approximately 93,555.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11585862April 29, 2024
VISIBILITY, VISIBILITY:GLASS, SIDE/REAR
See attached document for complaint
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11585237April 25, 2024
POWER TRAIN
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
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11583898April 18, 2024
SERVICE BRAKES, ELECTRICAL SYSTEM, POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11583571April 17, 2024
UNKNOWN OR OTHER
AC condenser went out on my vehicle with 100,000 miles, lots of reviews online stating this is a known problem but yet there is no recall. Torch Converter going out at 80,000 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11582533April 12, 2024
ENGINE, POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11582654April 12, 2024
POWER TRAIN
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.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11582269April 11, 2024
ELECTRICAL SYSTEM, SERVICE BRAKES
I kept getting a constant alert on my vehicle dash board that said "service trailer brake system" the beeping alert was quite literally constant and it covered up the digital speed odometer, every time I tried to acknowledge the alert it would just pop up and start beeping again. I searched online and quickly realized that this problem with the brake system has plagued GM vehicles for several years and I attempted to fix the issue myself by buying factory parts that other GM owners stated was the issue but it did not correct the issue. I ended up needing to take it to a GM service center and my vehicle was there for 2 business days and it ran me several hundred dollars to have GM fix the issue in the electrical brake system. Again according from online research this problem has plagued a large number of GM vehicles and it would be nice to see GM issue a recall and correct the issue so other people don't end up in the situation I was in.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11579377March 25, 2024
SERVICE BRAKES
The truck is throwing a repeat of service trailer break
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575196March 3, 2024
POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573421February 22, 2024
SERVICE BRAKES
Getting message on console "Service - Trailer Brake System". This could result in trailer brakes to fail while pulling loads.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Sierra