GMC Sierra Complaints

15,732 consumer complaints on file.

#11575159March 3, 2024
STRUCTURE:BODY
On four different occasions my tailgate came down by itself. Once while driving and on three other occasions before I drove off.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575182March 3, 2024
SUSPENSION
Purchased 2024 GMC Sierra 1500 Pro 2/28/2024 with 6 miles on it. Drove vehicle home (20 miles). Picked up and dropped off Grand Daughter from school. Proceeded to my Mom's house and took her for a ride then came home. Next afternoon went to take out garbage and noticed puddle by passenger rear tire. Got under truck and found shock to be completely wet. Called Dealer and made appointment to bring truck in next morning. Brought truck in next day and Dealer confirmed that shock was blown. Shock is not in stock but was ordered. Currently waiting for delivery to set up appointment to replace shock (Only the one that is blown of course). Truck now has 108 miles. 60 of those miles are driving from, back to and back home from the dealer. Now it sits with cardboard under it and once repaired, I have the bonus of scrubbing multiple oil slicks off of my driveway. Glad I wasn't towing or carrying a payload...
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
#11575089March 2, 2024
ELECTRICAL SYSTEM
It started year and a half ago involving my tailgate. The buttons to operate by upper and lower tailgate failed to operate on the rear of the truck, but cab button and remote button would open the full tailgate. Returned truck to dealer and they replaced the rear control. It worked for approximate 4 or 5 months the the total tailgate button failed, half tailgate button worked no problem. About 6 mths ago I went to drive to work and hit a bump felt like something bounced but really didn't think of tailgate being open. Drove on interstate for 7 miles at speed of 70 to 75 mph. I had my structural firefighting equip in the bed. Stopped at a drive thru for coffee then drove 5 miles to other side of town to my workplace put truck in reverse and my camera showed the ground, my tailgate was open. Thank goodness nothing fell out of the bed. 2-3 days later left for work, hit bump and felt the rattle in the rear again, stopped and tailgate down, closed tailgate and it opened again immediate after closing. This has occurred numerous times, now the half gate now unmatched along with entire tailgate and opens hitting hitch, scratched paint off. Thought it was me hitting keys in my pocket but continued to occur with key in cab. My mileage warranty passed so I was waiting to get some extra cash to fix the tailgate latches. Have not seen any recalls for GMC sierra 1500 denali, thought I would file a "complaint".
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575090March 2, 2024
POWER TRAIN
Transmission
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575091March 2, 2024
ELECTRICAL SYSTEM
While driving down the road at random times of the day, random days, random drive periods, random locations, the DIC and touch screen along with radio will shutdown and restart, like rebooting the system or just starting the truck. I loose the mph, gauges, navigation, everything on the dash and touch screen the it will come back on like nothing happened. I have contacted 2 dealers and they say I need to download updates but when I go to update it is not required or needed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574977March 1, 2024
STRUCTURE:BODY, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Tailgate fell down when I had a trailer hooked up. I was parked, then backed up the trailer. Tailgate came down on the jack and scratched the tailgate. There is a recall on some trucks but mine says no recall. Sounds like same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574990March 1, 2024
SERVICE BRAKES
Trailer brake controller that is built into the truck intermittently works when towing a trailer. I will be towing down the road and all of a sudden I will get a warning on my gauge display that says “check trailer wiring” and the light that indicates that the trailer brakes are working goes out. Meanwhile, all of the lights on the trailer still work. After about one second, another message appears and says “trailer brakes connected” and the light on the brake controller comes back on. When this happens, the larger screen sometimes has a message that says “trailer brake gain recalled” but sometimes it says “brake gain not recalled”. When the message “check trailer wiring” comes on, the trailer brakes don’t work. The trailer brakes start working again when the message “trailer brakes connected” comes back on. You can feel this in the truck, especially when it goes off, on, off, on, etc while you are trying to slow down. You literally feel the truck surging as the brakes are intermittently being applied. I have taken the truck to a GMC dealership and they were not able to duplicate the issues since the issue only happens when the truck is hooked up to a trailer that has trailer brakes. I had a certified RV mechanic inspect the trailer brakes and they are working like they should. I hooked the same trailer up to a Ford F-250 and had zero issues. I hooked the same trailer back up to my GMC and immediately had the same issues. I am taking the truck and trailer to a different GMC dealership on March 11th to see if they can duplicate this and diagnose the problem. I called GM corporate customer service and they were basically no help. This is a big safety issue because the truck is not telling the trailer’s brakes to function like they are designed, which makes it much more difficult to slow down, especially going down hill. I have done a bunch of research on this problem and found numerous online forums on this topic, so I know I am not the only one experiencing this
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574702February 29, 2024
AIR BAGS, SEAT BELTS
The contact owned a 2017 GMC Sierra Denali. The contact stated that while driving at 65 MPH, he briefly fell asleep. As a result, the vehicle left the roadway and collided with the exit median, coming to a complete stop after careening into a side ditch. The air bags did not deploy, and the seat belt failed to properly retrain, resulting in head and neck injuries. No warning lights were illuminated. A police report was filed, and injuries were reported. The contact was transported to an area hospital by EMT and treated for various lacerations to his head and arms and an unstable fracture of the C7 in his lower neck, later requiring surgery. The vehicle was towed to a tow yard and deemed a total loss by the contact's insurance provider due to a bent chassis. The manufacturer was notified of the failure, and they inspected the vehicle, concluding that the impact was not sufficient to trigger air bag deployment, estimating that the vehicle was traveling between 1 and 4 MPH and that the air bags were functioning properly. The VIN was not available. The failure mileage was 32,000.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11574398February 28, 2024
ELECTRICAL SYSTEM
There is an issue with the drivers door locking mechanism. Something between the electrical and the mechanical components that lock and unlocks the door keeps breaking. So far you can always unlock the door manually by pulling the door handle but it sporadically will not lock or unlock by the remote or push button. Also it doesn’t always lock when put into drive like the rest of the doors do.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574417February 28, 2024
ELECTRICAL SYSTEM, ENGINE, SERVICE BRAKES
Complete system failure while driving. Lost control of vehicle, no breaks. Had it brought to dealership. Lifter failure and bent rod, top engine failure which caused everything to malfunction. Vehicle has 88K miles on it. This is a defect. We had taken it in for the ticking problem in the past and they did nothing for us. Everything is documented. We are afraid that bottom half of engine was compromised. Do not feel safe driving this vehicle anymore. I do not want it to blow or lose control of vehicle again. This is a known issue and must be addressed. There was a service bulletin put out for my engine and there is an exact part by part that needs to be replaced, however GM is unwilling to listen to us at this time. Please look into this because this will happen to more and more consumers. This is very scary. What is the cost of a life?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574433February 28, 2024
STEERING
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving at slow speeds, the power steering assist intermittently failed to operate as needed with the "Steering Assist Reduced - Drive with Care" message displayed. Upon investigation, the contact discovered NHTSA Campaign Number: 17V414000 (Steering) which was linked to the failure. The vehicle was taken to a local dealer where the contact was informed that the vehicle was previously repaired under the recall and that the vehicle was no longer under recall. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574476February 28, 2024
ENGINE
The contact owns a 2021 GMC Sierra 2500. The contact stated that the vehicle was equipped with an engine block heater that he plugged into the vehicle when the weather was below 32 degrees to start the vehicle. The contact stated that he noticed that the engine block heater was causing the GFCI outlet in his residence, to experience an electrical short circuit. The dealer was notified of the failure and informed the contact that it was a known failure. An appointment was scheduled for diagnostic testing. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 19V328000 (Engine) however, the VIN was not included. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 55,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574295February 27, 2024
ENGINE
I purchased this vehicle used with approx 16k miles on it. Not long after getting it - as I was driving it started dinging and then would shut off. Sometimes I’m in the fast lane going 75Mph and it’ll just shut off. The dealership can’t get it to repeat itself. They said they’ve heard of it happening before but it throws different codes. There’s no rhyme or reason to causing it to shut off, but here lately I don’t even get the warning bell. It just dies on me. As soon as i shift it to neutral and press start it’ll restart instantly. But it’s scary nonetheless, and causes me to drop speed instantly and poses a safety risk especially when I have semi’s or other vehicles close behind.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574348February 27, 2024
UNKNOWN OR OTHER
The onstar module has failed twice.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573939February 26, 2024
FUEL/PROPULSION SYSTEM
Fuel Pump Drive Control Module (Part No. 13540028). This item is a recall on several other vehicles, but not identified on my year/model. On 4 separate occasions over a 3-4 week period, the engine starting running very rough lost power and stalled while traveling down the road (highways, interstate, and a side street). I was finally able to pull a fault code and research the history of this code and this part on several other GMC/Chevy modeled vehicles. The dealer advised I was lucky to find the part because most of them are on backorder due to the recall on other vehicles. The one I got was for a recall, but the customer hadn't returned in time so they sold it to me. I had a repair garage replace the component on Jan 13, 2024, and haven't had any repeat issues. The check engine light did come on each time with a P129F code. It would reset after the vehicle stalled and was powered off for 10-15 minutes and the symptoms would go away. Each time left me lucky to get my vehicle over several lanes and off the side of the road. The date below was the last time it happened. The first time it happened was on Dec 6th and the vehicle started back up in just a minute or two. I still have the old part if it needs to be sent and evaluated to compare with other recalls on the item in other vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573739February 24, 2024
ENGINE
Engine oil cooler line crimp connections are not properly crimped and leaking oil whether the truck is operating or sitting off. It also appears the flare or threaded connection has failed. I went to the GM dealership who said my truck wasn’t part of the recall but my lines are very clearly the same affected parts and would not be available for repair under the recall. I suspect there are other trucks like mine that were missed in the initial recall. I had the lines inspected at another repair shop but all the GM oil cooler lines were unavailable and no back order was permitted. There have been no warning lights for low oil pressure yet but the worst level I have seen so far was only 3 of 8 in quarts in the oil pan. I’m afraid of the lines blowing out on the road and causing a total uncontrollable engine failure and oil slick for other drivers.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573799February 24, 2024
STRUCTURE:BODY
UNKOWN. It came like that. I took the truck to the dealership to be inspected and I was told that it was a manufacturing problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573683February 23, 2024
POWER TRAIN
The transmission is shuddering, hard shifting, shuddering and lunging into gear. It is the 6L80 transmission Also has little to no power, took it to the dealership for diagnosis and they say the transmission is bad, torque converter is also bad sending metal throughout the rest of the transmission.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573594February 23, 2024
ELECTRICAL SYSTEM
2016 GMC SIERRA SHARK FIN ANTENNA GETS WATER UNDER AND DESTROYS ONSTAR, NAVIGATION, AND COMPASS OPERATION. THIS IS RECALLED IN 2015 BUT DOES NOT INCLUDE 2016 THAT HAVE THE EXACT SAME PROBLEM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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