GMC Sierra Complaints (2021)

671 consumer complaints on file.

#11479962August 18, 2022
STEERING, SUSPENSION, LANE DEPARTURE: BLIND SPOT DETECTION
I took my truck to the dealership because of my issues and they said they had many trucks going in with the same issue but there was no fix to it. The issues Popping Noise Heard On Hard Turns and/or Going Over Speed Bumps, Creaking Noise While Turning Wheel Left and/or Right, Clicking Noise Heard On Slow Sharp Turns.Also when you go over a bump the truck makes a spring loud noise to the point that the whole truck bounces. shifter is also very hard when you try to change gears.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478489August 9, 2022
AIR BAGS, SEAT BELTS
The “Service Safety Restraint” alarm goes off continually on my 2021 GMC Sierra 2500HD AT4. The warranty is no longer valid as at the time of occurrence I was at 34,500 miles and when I took it in the warranty had expired due to exceeding 36,000 miles. Extended warranties were not purchased and this began approximately 8-9 months after purchase. The code given is “b0014 Driver Seat Side Air Bag Deployment Loop” with a description of high resistance in wiring or wiring harness. After much research I have found that many GMC 2021 vehicles and previous models have had this exact same issue. No dealership as of yet has offered to help or understand that this defect was of their own flawed design. The issue that I am having is exactly the same as other models such as the 2021 Yukon, Sierra 1500, Suburban and others. This is a safety issue and only want GMC to account for their flaw. I do not believe I should have to pay for a design flaw or equipment malfunction that is well known amongst GMC vehicles. I am asking the NHTSA to help me in this matter and the many others who are having the same issue and for the manufacturer to be accountable for their own flaw.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478289August 8, 2022
AIR BAGS, STRUCTURE:BODY, UNKNOWN OR OTHER
Hit in the driver side tire, air bags didn’t release. Truck then went up in flames.
Crash:
Yes
Fire:
Yes
Injuries:
0
Deaths:
0
#11477516August 4, 2022
TIRES
The contact owns a 2021 GMC Sierra 1500 equipped with General Tires, Tire Line: Grabber HTS60, Tire Size: 275/60 R20, DOT Number: (NA). The contact stated while driving 15 MPH in a parking lot, the rear passenger’s side sustained a blowout. The contact stated that the low tire pressure warning light was illuminated. The contact was able to park on the side of the road and replaced the rear passenger’s side tire with the spare. The contact took the vehicle to the local dealer to be serviced. The vehicle was not yet repaired. The tire manufacturer had been informed of the failure. The failure mileage was approximately 18,700.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11477615August 4, 2022
STRUCTURE:BODY
when driving down the rode the center hood scoop blew off 0
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11471842June 30, 2022
ELECTRICAL SYSTEM:WIRING
The contact owns a 2021 GMC Sierra 1500. The contact stated while attempting to start the vehicle, the vehicle failed to operate as needed. The service parking brake, check engine, and other unknown warning lights were illuminated. The vehicle was towed to the local dealer to be diagnosed. The contact was informed that the failure was due to damaged electrical wiring caused by rodents. The contact was informed by the dealer that the wiring insulation was made from soy-based materials. The vehicle was repaired three times due to the failure. The manufacturer was notified of the failure. The approximate failure mileage was 23,300.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11468057June 7, 2022
ENGINE
Engine lifters failure, caused ESC light to come on and check engine light and other dash lights. Lack of power from engine causing dangerous driving in traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11467248June 3, 2022
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
When using adaptive cruise the brakes have engaged aggressively without cause. This has happened several times prior to my discontinuing the use of this option. I have not had it in for service yet (we just returned from vacation).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11467195June 2, 2022
ENGINE, POWER TRAIN
1 June 2022, while driving, started hearing a clicking noise from front end, under hood. Took to local GM dealer, Mechanic drove with me, and he heard the noise, said he would order a part and safe to drive. So, I went home. 2 June 2022 started same vehicle, a very loud banging, clicking, shuttering noise from under hood, I took back to same dealer, Dealer said collapsed valve lifter. GM service notice says for dealer to fix under warranty. Apparently, a known problem with MANY 2021 GMC 5.3 L engines. PLEASE MAKE GM RECALL THIS ISSUE FOR REPAIRDS
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11466718May 31, 2022
SERVICE BRAKES, ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
The contact owns a 2021 GMC Sierra 1500. The contact stated that when pulling a trailer with electric brakes with their vehicle, a warning light stating to check the trailer would illuminate on their instrument panel. The warning light would also state that the electric brakes had disconnected and then reconnected shortly after. The failure would occur on a consistent basis. The main control computer system in the center where the radio is located would flash the message that the trailer brake gain not been recalled. The contact contacted the dealer who confirmed that the computer system was known to have an issue due to the interference between the electric brakes and the LAD lights on the vehicle, however, there was no recall. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 21,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11464852May 16, 2022
ENGINE
Diesel Exhaust Fluid tank, high pressure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11462517April 27, 2022
TIRES, TIRES:BEAD, TIRES:SIDEWALL
LT245/75R17 I bought these tires on Walmart. com June 2021 and had Walmart install with road hazard and lifetime balance, I returned to Walmart in April 2022 and was told I had a defective tire, that it was coming apart, I can see the fibers around the issue area and soft spongy for approximately 14 inches sounds like glue not sticking when I push around the bead area, Walmart told me it was a manufacturer defective tire and they included that on the work order and also told me to take tire and contact manufacturer which I did, I have spoken and also emailed with a Michael Dorr with Unicorn Tire. without any positive results only denied a claim. this tire needs to be Inspected and I want a new one, this for sure is defective.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11461762April 22, 2022
ELECTRICAL SYSTEM
The contact owns a 2021 GMC Sierra 1500. The contact stated while using the GPS, the digital speedometer failed to operate as needed. The contact notified the dealer of the failure and the system was rebooted; however, the failure persisted. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 1,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11461412April 19, 2022
STEERING
As I was driving out of the parking lot my power steering suddenly was lost. A message appeared on the screen saying: Service Power Steering Drive with care and an esc message. A light also appeared. I was not able to steer at all and had to turn the truck off. I tried multiple times. After 5 minutes the message cleared as did the light. A day later (today- 4/19)the same thing happened in the parking lot. THIS IS VERY DANGEROUS. I have an appointment with the dealer. When looking up this problem it appears there are multiple recalls on other 2021 models but not the Sierra though I see many complaints about the same problem on the Sierra's. This is not safe and needs to be looked into further.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11460325April 10, 2022
ENGINE, UNKNOWN OR OTHER
My truck shakes/shutters at random times. while steadily driving at constant speed and/ or shakes/shutters even more when I try to accelerate.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11459422April 3, 2022
FUEL/PROPULSION SYSTEM
Part Number: 85138746 - DEF tank assembly, heater, pump, reservoir. I was told there were issues with the heater and pump. The heater turns high or the heater won’t work; and there are issues with the connector.02/24/22: My truck has 16,000 approx. miles. The check engine light came on and displayed message that I had so many miles until truck would be restricted to 65MPH. I took my truck into Kendall dealership in Nampa, Idaho and was told there was myself and another person who had the same issue. A couple weeks go by and I call the dealership back and was told that I was 5th in line and there were 20 behind me. I was told that there were 11,000 parts already spoken for and 6,000 parts on backorder. I was one of the backorder individuals. I was also told that they do not have a ETA on when they would receive parts and that parts show up unexpected. They told me that I would have to contact GM customer service for assistance. The dealer called me back March 31st to see if I got my camper moved and how much it cost to move. They told me the dealership would cover one month truck payment and would like me to send in my loan payment statement. I asked for clarification as I didn’t know how I could have been 2nd person and the other day he said I was fifth in line. He said that there are at least 2-3 persons for service technician at dealership. Only 2 got fixed in the last 2 months. I asked if the new part going in will have the same issue or will be a re-designed part that fixes the issue. Dealer said the same part. GM is working on a re-design part and not ready for manufacturing. I asked why this wasn’t on a recall and he said no because it would bring people in that don’t need it replaced because their part is still working, and that GM doesn’t have a re-designed part to fix the issue. Gortsema Motors in Grangeville, Idaho a friend brought in their 2018 Chevydiesel truck (with 87,000 miles) for the same issue. Dealer said they have many cases.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11459426April 3, 2022
POWER TRAIN
Problem: Unable to shift transmission from D to another position like R, P, N due to snow/slush being on shifter. I travel on Idaho state highways and County roads that are plowed. In February, I traveled state highway 14. Road conditions were plowed snow roads, broken snow floor, slush and pavement without slush or snow. I had a passenger with me on this trip from Elk City, Idaho to Grangeville, Idaho via SH-14. When I pulled into my storage unit, I could not shift from D to P or N or R. I could only drive forward. The temperature in Grangeville was mid 40s. I did not have any tremendous snow build up on the under carriage or wheel wells. I drove to the dealer Gortsema Motors and their service technician said that I needed to go to a car wash and blow out the snow buildup next to the transmission linkage shifter. When I pulled into the car wash, I still could not shift the transmission. My passenger got out and used the water to push out the snow buildup around the linkage shifter. Then I was able to shift between all gears P, R, N, D. This is a big concern because this should not have happened. This is a major problem in the winter and had there not been a car wash to blow out the snow/slush, I would not be able to turn the truck off or restart the diesel truck in gear. There needs to be a protective shield around the shifter so that snow/slush does not get up into area and cause the shifter to not shift.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11456062March 10, 2022
STEERING
The contact owns a 2021 GMC Sierra 1500. The contact stated while the vehicle was standstill, the steering wheel seized. The contact stated no warning light was illuminated. The contact called the local dealer and made them aware of the failure. The contact was instructed by the dealer, to remove the ground cable from the battery and reinstall. The contact stated he was able to reboot and the steering wheel was able to move properly. The manufacturer had been informed of the failure. The failure mileage was approximately 15,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11455361March 5, 2022
ENGINE, SERVICE BRAKES, POWER TRAIN
The throttle body gets stuck wide open after the eninge gets up to operating temperature, it will give some warning with the throttle like on off throttle use and no codes show up at all. The risk of everyones is in extrem DANGER. The break are to soft and well not stop unless you put both feet on the break pedal down to the floor. Tranismission can NOT figure out what gear it needs to be in way too many gears and horrible fuel mpg for the 6.6L Duramax L5P. None of the GM dealership will look at the truck unless there is a code or it is happening right there when they look up the trucks VIN.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11454519February 28, 2022
ENGINE, POWER TRAIN, FUEL/PROPULSION SYSTEM
•The diesel exhaust fluid heater is a faulty component in the system, there is a back order on the part with no ETA • My pickup only does 55MPH right now and soon to do 5MPH you cannot drive on a public road doing 5MPH •There is thousands of other people having the same exact problem! •The DEF light is illuminated on my dash along with the check engine light, when you diagnose the error code it comes up with “P20C1 Reductant Heater C Control Circuit/OPEN”
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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