GMC Sierra Complaints

15,732 consumer complaints on file.

#11549469October 11, 2023
POWER TRAIN
The torque converter of transmission went out on my 2019 GMC Sierra 1500 Denali with only 62072 miles. My safety has been put at risk daily, from intermittent shuddering and loss of power. My vehicle underwent a multi point inspection at Earnhardt Buick GMC confirming I will need a complete transmission assembly estimated to be around $7100. There were no indications or dash lights, the only reason I brought it in is from hard shifts, and intermittent shuddering.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548979October 9, 2023
STRUCTURE:BODY
I’ve only had the truck for 1 years and the frame is so deteriorated and rusted. My frame is now cracked/damaged. I’ve read up on the same manufacturer/trucks and it seems like an ongoing problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11549084October 9, 2023
UNKNOWN OR OTHER
Unknown Truck unexpectedly comes to almost complete stop between speeds of 35 to 55 mph. Occurs more frequently around 40 mph. Truck has been in repair shop and diagnostic can’t explain the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548799October 7, 2023
EXTERIOR LIGHTING
Passenger headlight light fills up with moisture resulting in the HID module filling up with water and shorting out. The high beam starts flashing when you try to use your turn signal and eventually the headlights completely stop working. Is a known problem, but GM won’t do anything to help if you’re outside of the 3year/36,000 mile warranty. Currently unable to get a new headlight because of the on going strike.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548826October 7, 2023
ELECTRICAL SYSTEM
While driving the vehicle, the radio will suddenly and instantly jump to full volume frightening the driver and passengers and making it hard to focus on the road and control the vehicle. The dealership and GM will not fix the issue as it happens intermittently.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548856October 7, 2023
ELECTRICAL SYSTEM, SERVICE BRAKES, ENGINE
Service Trailer Brake System. This has happened in the past 3 Times, in which the local GMC Dealership has made me pay for New Batteries and other Fuel system issues. Dealership stated that this shows up because of a bad battery.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548370October 5, 2023
ENGINE
The contact owns a 2013 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, while making a left turn, the accelerator pedal was depressed and there was a ticking sound coming from under the hood of the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was being repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548158October 4, 2023
POWER TRAIN
TCM has failed and no replacement available
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548306October 4, 2023
UNKNOWN OR OTHER
Upon starting our 2024 GMC Sierra 2500HD after towing a camping trailer for approximately 200 miles, the following error notifications would cycle every 20 seconds to 5 minutes: "Check Trailer Wiring" "Service Trailer Brake System" The trailer brake would become disabled after these errors, and sometimes would connect with a "trailer brake connected" message, only to repeat every 20 seconds to a few minutes later. During the 60 minutes in which I drove to an RV dealership to have the problem looked at, on multiple occasions, I had no trailer brakes when braking, or had no trailer brakes until the trailer brakes suddenly connected at below the speed of 35 - 25 MPH. GM has acknowledged document ID: 6420021 and bulletin #23-NA-149 that this could happen when pulling a trailer with a battery, generator, or solar charger that has a higher state of charge than the vehicle battery. This is an extremely unsafe condition that could easily cause a rear-end accident or a jackknife condition of the vehicle/trailer combination. GM has known about this issue since at least June of 2023, and as of September, they have an updated trailer brake controller that is supposed to correct this issue. There should be an immediate recall of the vehicles involved to have the trailer brake module replaced with the updated part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11547265September 29, 2023
UNKNOWN OR OTHER
Rear sliding window leak and has saturated seat and carpet causing an unhealthy environment. Spoke with dealer and was told it is a design flaw and repairs are not covered under extended warranty. I was also told it is only a temporary fix and “ leak will reoccur”. I only realized of the problem when soap residue was seen on the inside of the widow. Dealer gave estimate of repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11547373September 29, 2023
ENGINE, ELECTRONIC STABILITY CONTROL (ESC), LATCHES/LOCKS/LINKAGES:TAILGATE:LOCK
The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving 30 MPH, the check engine malfunction and Electronic Stability Control system malfunction warning lights illuminated. The contact was inadvertently locked out of the vehicle and was unable to open the tailgate. The contact disconnected the battery to cancel the warning lights; however, the tailgate still failed to open. The vehicle had not been taken to the dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 1,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11547435September 29, 2023
TIRES:SIDEWALL
In May 2022, I purchased four Cooper Discoverer A/T All-Season 117T 275/55/R20 tires from Walmart.com for my 2018 GMC Sierra 1500 SLT. In May 2023 my vehicle developed a vibration when driving at certain speeds, so I took it to a GMC dealer for a tire rotation and balance. The mechanic discovered that one of the tires had a large bubble on the inner sidewall. He considered it such a safety risk that he insisted on removing the tire and replacing it with the spare before he would let me drive home. The tire was replaced with another of the same kind and tread depth. Yesterday (September 28 2023) I felt that my truck was wandering and swaying. I made an appointment for it to be inspected on Monday, and planned not to drive it until then. Today I observed that the rear passenger tire appeared low. I was shocked to find a split in the inner sidewall approximately one third of the circumference of the tire. I also found a large bubble on the inner sidewall of the driver's side front tire. I am shaken that I could have had three different tires blow out potentially killing myself and other motorists. I will be retaining the tires for inspection, and photographs have been taken. The manufacturer has been contacted. It seems that other model tires have been recalled by Cooper for the same issue, but I have not found a recall for this specific tire.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546766September 27, 2023
SERVICE BRAKES
At low speeds the brake pedal gets hard and it feels like the antilock brake system is activating, I believe this is the issue with the Brake booster vacuum pump. GM isn't calling this a safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546810September 27, 2023
SERVICE BRAKES
The brake vacuum pump is failing. When in a parking lot the brakes get very hard al.ist causing an accident. There is no vacuum when trying to park in parking lot. The 2015 GMC Sierra had a recall for this but my VIN did not. Not sure why as it's failing too. I need my truck so will have it fixed today, but want a recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546655September 26, 2023
POWER TRAIN
Truck all a sudden developed a Lifter noise under the hood and the check engine light came on Friday, September 8th. I checked the oil and oil pressure which was ok. Saturday morning 9/9 I notice some loss of power pulling out on Highway. I took the truck immediately to a friend who is a retired GM Master Mechanic. He coded P0300 and P0306 with 158 miss fires. The following Monday on September 11th I took the truck to Clift GMC in Adrian, MI. They confirmed a Lifter failure and bent Push Rod on Cylinder six. on my 5.3L engine. Since I have learned the AFM System on these engines is driving Lifter Failures. I was lucky my Camshaft was not harmed. My truck had 84,945 miles on it and is six years old. GM offered no, zero assistance. The Dealer could only state this is a well known issue which they see frequently offer a extended Power Train Warranty at a cost of $1600 t $2000 dollars. How is a Extended Warranty a solution to a poor Engine Design? Help!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546705September 26, 2023
POWER TRAIN
Shifting started to make a loud clunking sound. Then the vehicle wouldn't shift out of 3rd gear. The engine check light came on and the code determined it to be a faulty transmission control module (TCM). When looking at the TCM, I also noted that the TCM was very hot and the nearby cable cover had melted. When researching the issue, it was discovered that GMC Sierra 2500 and 3500, years 2009 - 2015 were having this same issue all over the continent. Resulting in a massive back order and leaving drivers stranded. There was no warning lights or sounds before my power train froze up.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546336September 25, 2023
UNKNOWN OR OTHER
The rear window is leaking severely. It seem to be an ongoing issue with these trucks at the rear brake light spoiler. It’s a substantial amount of water and there is water damage and mold.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546400September 25, 2023
ELECTRICAL SYSTEM
Unwanted Radio Volume Ramp Up to Max: The radio volume turned up to the maximum while driving and could not be turned down with user controls including those both on the steering wheel and the volume knob on the dash. The situation lasted about 60 seconds before it began responding again. The vehicle has the optional Bose radio system which is EXTREMELY loud. This issue presents risks with damage to my small daughter's ears, as well a significant distraction from driving due to frantic attempts to decrease the volume while being overwhelmed by the noise level.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546419September 25, 2023
ENGINE
The contact owns a 2017 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle jerked and stalled with the check engine warning light illuminated. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN related to the failure. The contact was referred to the dealer for assistance. The vehicle was not diagnosed or repaired. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546253September 24, 2023
VISIBILITY/WIPER
The rear window on this vehicle is leaking water and has been for some time. It has become quite bad and is causing an odor and discoloration in the carpet. I could not find the cause of the problem until recently with the plastic cracking more. The vehicle has 41,000 miles and the dealer stated that is out of warranty and all repairs would be a cost to me. I researched this and have found it is a common fault this this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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