GMC Sierra Complaints (2024)

545 consumer complaints on file.

#11637182January 20, 2025
ENGINE
29K and I have metal shavings in the oil/lifter tick failure. T
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11637192January 20, 2025
ENGINE
Since brand new, the engine makes a significantly loud chirping sound at two occasions. First is every time the fuel saving auto start kicks in to start acceleration. The other is any time you come to a stop from above 25-35 MPH. At around 16 MPH, there is a loud chirping as you decelerate. This appears to be a timing malfunction and is affecting fuel economy. The vehicle has 8,800 miles on it, and it is getting worse. It has been looked at 4 times and has not been identified. I know there was a GM bulletin from 2022 about this 6.2L V8 Engine, but they state it is "normal". I have never heard a normal sound of this kind from an engine. And certainly not on a $75K vehicle. Please investigate and make them correct the issue or replace the engines. people work too hard to afford nice vehicles, and should not have to deal with this issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11636924January 19, 2025
ENGINE
My truck was put on an engine oil consumption plan at ~14,000 milee. Then a month later the engine complete seized while i was driving at 60 mph in the middle of southeast Missouri. The dashboard started flashing with a warning saying that I needed to press the start button. The vehicle came to a stop and i was unable to get it to turn over. I currently have a warranty claim with GM amd the vehicleis at Laura GMC in Collinsvill, IL awaiting a replacement engine. I have no confidence in GMs ability to fully resolve the issue. My life has been completely disrupted as a result of their lack of quality controls.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11636447January 17, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION, POWER TRAIN
See attached document for complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11636575January 17, 2025
VISIBILITY/WIPER, ELECTRICAL SYSTEM, SEATS
Intermittent problems with various systems freezing up or not working: Windshield wipers freezing for several seconds mid-wipe. Nearly caused accident. Heads up display not retaining settings Seat controls (bladders that inflate deflate) intermittently working/infotainment screen freeze (where seat control is displayed). Lane departure warning inconsistently working (beeping) Radio quits playing for several seconds and screen goes dark Blinker stops blinking and then re-starts 6.2L engine slow/rough idle continuously hunting for stable speed (This is the only problem that is NOT intermittent). At times almost dies. A/C unit stuck on "hot" delivering 92 degree air when outside 72 degrees. Temp set at Low. (No A/C just trying to get fresh outside air in). Vehicle was under recall and control modules "reflashed" before purchased (new). Dealer reflashed which did not solve problems. Dealer cannot duplicate (but they only spend a little time looking at the issue). Has been in shop off/on for about 2 weeks attempting to resolve. Issues on occasion still occuring since Mid October 2024 purchase.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11636622January 17, 2025
ENGINE
Engine bearing failure, complete loss of power while driving and turning left into oncoming traffic. Bearing failure confirmed by GM Dealer, brass shavings in oil pan.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11634982January 8, 2025
POWER TRAIN
On 12-26-24 the transmission on my vehicle failed suddenly going down the highway. Driving down the road a jerking motion and then all of a sudden the vehicle would not shift gears. Luckily the road wasn’t crowed because all of a sudden the vehicle slowed and would not accelerate. If someone had been following me there was no break light indicating I was slowing down. When I returned home I discovered I didn’t have reverse either. If I was in a place I needed to back up I couldn’t have. I took the vehicle into the dealer the same day and they diagnosed the problem was in the transmission. They ordered the part but it isn’t available and don’t know when it would be available. This leads me to think there must be many other transmissions with the same problem as mine. In my case there was no accident but if it had been on a congested highway there could have been.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11634650January 7, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
On December 26th 2024, I was travelling 5 mph or less while pulling into a parking space at a restaurant. As I let the steering wheel return to center, my hand hit the Resume button on the left side of the steering wheel and the vehicle immediately began to accelerate. I was able to step on the brake to prevent the vehicle from hitting the wall of the restaurant. The next day on December 27th, 2024, i was able to duplicate the problem. I had set the cruise at 55 mph before I came to a stop at a traffic light. I released the brake and pressed the Resume button and the vehicle immediately accelerated from a dead stop. I've been an automotive mechanic for over 30 years and I've never seen this happen before. It's my understanding that vehicles wouldn't engage cruise control unless the speed was over 35 mph.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11633831January 3, 2025
ELECTRICAL SYSTEM, POWER TRAIN
Car will not turn off and will display "Shift to Park". Similar recall on other models. This has gotten worse and happens most of the time now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11633840January 3, 2025
POWER TRAIN
Failed transmission; needs valve body replacement but part is on national back order. Vehicle has been at dealership since 11/12/24. Almost 2 months and no eta when part will be in. Dealership did offer loaner after first 3 weeks. Vehicle is available for inspection, no safety issues as the problem occurred in driveway at home. If the problem had happened on the highway though, there would definitely have been some safety concerns. No prior warnings or symptoms. The problem has been confirmed by the dealer and was approved as warranty work. A recall should be issued.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11633992January 3, 2025
POWER TRAIN
On December 13th 2024, I was unable to drive my truck in reverse. I put the truck in neutral and pushed it out of its parking spot. I was able to drive the truck to the GMC dealership for diagnosis. On December 19th, I received a call from the dealership and I was told the transmission valve body was bad. I called on January 2nd 2025 for an update on the repair and was told the valve body was on backorder and they had no ETA on the Part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632650December 27, 2024
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
The contact owns a 2024 GMC Sierra 2500. The contact stated that the vehicle would not not immediately start and had also experienced electrical malfunctions which caused multiple unknown warning lights to display and flash including the seat restraint warning and the ABS and Air Bag warnings. The vehicle was taken to the local dealer who diagnosed that the two batteries located under the hood were faulty and needed to be replaced. Both batteries were replaced and the failure was remedied. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 40,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632101December 23, 2024
UNKNOWN OR OTHER
Tailgate opened unexpectedly while I was pulling a trailer. Damaged tailgate.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11631949December 21, 2024
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
On 2 occasions now my tailgate has opened on its own. The first incident happened sometime after I got home from work for the night, when I went to leave in the AM my tailgate was resting on the garage door and had been scratched. The second time it happened I didn’t notice it while driving but when I went to close the garage door I looked back and saw the gate was open and partially sticking out of the garage. Nothing happened this time to put anyone at risk however there is damage to the truck and if it happened while hauling something could have come out and hurt someone or damage property. I have not brought it to a service center yet. No warning
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11630975December 16, 2024
SUSPENSION
Noise coming from rear leaf springs
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11630713December 14, 2024
SERVICE BRAKES, POWER TRAIN, UNKNOWN OR OTHER
Breaks and/or drive train. It is available for inspection. 1) Breaks sink causing slowed break time and decreased breaking ability. If the breaks are "pumped", more often than not, they will come back up to full pedal. However, in an emergency breaking situation, there is not time to "pump" the breaks. I was nearly in an accident recently when the break pedal would not stop the truck in time, due to the soft break pedal. I literally had to steer to the shoulder of the road. 2) When placing transmission in Drive or Reverse from the park position, then taking foot off of break pedal, there is about a 1 - 2 foot roll, then the truck stops as if the e-break has been engaged (but it is not engaged). By tapping the accelerator, it will "break free" (with a popping sound and a slight "jerk" in the truck) and then roll fine. This does not always happen ~ guestimate of about 10% of the time. 3) I don't know if this is related, but when I set the Drive Mode to "Normal", it automatically goes to "Off Road" ~ this happens no matter the driving conditions. This isn't safety related necessarily, however, it may be a part of the total problem.... It also decreases my fuel economy. I took the truck to the local GMC dealer/shop. They said the truck had 2 recalls and they took care of those. They believed one of the recalls would help solve the "sticking" when placing in Drive or Reverse ~ it did not. They also (supposedly) checked the breaking system and took it for a test drive. They said the breaks were fine. I doubt this happened as the soft break pedal and the need to "pump" the breaks to bring them to full pedal is completely obvious. I took the truck home after the inspection and recall. The same issues continued, so I took it back to the shop where it was inspected again. Again, I was told everything was in working order ~ it is NOT! There are no warning lights that I can find to indicate there is an issue. I'm begining to think that I should have bought a Ram Truck...
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11630193December 11, 2024
STRUCTURE:BODY
As I was driving on the highway the upper top moulding from the grill came off causing scratches to the hood. This is dangerous if it flies off into the windshield. This has been an issue for GMC.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11629735December 9, 2024
ELECTRICAL SYSTEM, ENGINE, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Truck thinks I’m about to run into something and slams on its brakes. Last time it sent my sister to the hospital to get 6 staples in her head. Digital cluster goes on and off as well as the infotainment center. Transmission bangs and shifts horribly. 900 miles on the truck with a check engine light and transmission warning.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11629474December 8, 2024
EXTERIOR LIGHTING
The reverse or backup lights do not properly illuminate, as the angle does not allow for viewing dangers behind at night. The lights are angled to aim way too high, and the lights are aealed. No way to adjuat. An adult standing just three to five feet behind truck, the lights illuminate at chest level, meaning a small child could not be seen at all, even with the rear view camera. Speaking of the camera, it not longer displays low light situations. People are going to be injured or killed because of these lights, or lack thereof of. On researching, this is a known defect since GMC went to LED tailings in the 2024 1500. This problem was not in my 2024 3500 as they use different lights. This is a dangerous situation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628898December 4, 2024
ELECTRICAL SYSTEM, ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
See attached document for complaint.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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