GMC Sierra Complaints

15,732 consumer complaints on file.

#11543060September 7, 2023
POWER TRAIN
The transmission overheated due to a poorly manufactured torque converter which caused my truck to come to a sudden stop on the interstate nearly being struck by several semi tractor trailers leaving my family and I in a dangerous situation. Upon research the torque converter and the thermal bypass valve fail causing the transmission to overheat with no warning whatsoever. It massively blew smoke out of the tailpipe blocking all lanes of traffic, completely unable to see that I'm broke down and nearly caused several accidents. Police was not notified since no accident occurred. The transmission preformed as its supposed to. No hard shifts or slipping between gears. This needs to be addressed by the NHTSA and GM as it's a huge safety issue. With no warning light indicating the transmission is reaching critical heat levels and shutting down poses a risk in the event you're towing a trailer/camper (As I was). Or even worse happening to those who live where they drive up and down steep mountain grades.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543308September 7, 2023
VEHICLE SPEED CONTROL, ELECTRICAL SYSTEM, ENGINE
Over the last 3 years we have had ongoing issues with our truck going into limp mode. We have spent thousands of dollars at dealerships and mechanics trying to troubleshoot the issue. Several occasions while trying to merge onto the freeway the truck would slip into limp mode causing us to have other drivers slam on their breaks almost hitting us. We had 2 cars in January of 2023 veer off the side of the road. We pulled over and thankfully they missed hitting one another. We just couldn't speed up to get out of their way. We cant believe their hasnt been a safety recall on the TCM for these trucks. GMC started doing Service bulletins in 2013 about the TCM causing the limp mode issues. There are dedicated facebook groups with over a 1,000 followers who are experiencing the same issues with these TCM's. Someone is going to die if they havent already. Several collisions, involving the years affected, are being re-investigated to determine why the vehicle slowed abruptly causing a fatal accident. A class action lawsuit is gaining momentum because GM will not do anything about the TCM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542885September 6, 2023
ENGINE
I have a 202 GMC Sierra 1500 with a 3.0 Duramax with 95,000 miles. I have hade 2 glow plugs replaced under warranty and took in for a third glow plug. They stated that the there was a software update that could fix it, but I would have to pay for it. The vehicle has a 100,000 mile warranty and the software update is to fix a powertrain item that is covered under the 100,000 mile warranty. This is also an issue with bad software that disables the remote start. Not sure why I have to pay for this software upgrade to to a GM issue from day 1.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542551September 5, 2023
ELECTRICAL SYSTEM, POWER TRAIN
Driving on the expressway around 60 mph when the truck went into limp mode slowing me down to 40 and then would not shift gears Tcm went out gm told me that there is a big problem
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542705September 5, 2023
POWER TRAIN
Transmission Control Module failure The TCM went out one day with no warning. Sitting at a red light, the light turned green, I started to go, and got about 20 feet into the intersection when suddenly it was like my truck shifted into neutral gear. Motor would rev but I couldn't move forward or backward. I was stuck in the middle of a busy intersection. My check engine light came on and the vehicle stability control light began flashing, it was as if everything in my truck was going haywire. I turned my hazards on as vehicles were whizzing by us, barely missing us. My wife and I got out and with the help of a few other drivers we attempted to push the truck out of the roadway but it was too heavy. We got back in and when I started the truck, all the lights were still on but this time it went into gear and we were able to leave the intersection under our own power. I was able to drive the vehicle to the dealership in 2nd gear. Luckily it was close. They diagnosed the vehicle. Code U-0101 lost communication with TCM was the diagnosis. Unfortunately, that part was on back order and it took 9 months to get one. Dealership replaced the part and all has been we'll since then.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542757September 5, 2023
UNKNOWN OR OTHER
my 2007.5 GMC Duramax has been parked for 1 month, had to barrow a truck to go to work, just not willing to pay the 1600-4500 dollars that suppliers or private sellers are asking for the TCM, tried a private seller on EBAY and it turned out to be a scam, local Dealership has no clue on ETA, I use my truck 6 days out of the week and now sitting not being moved may cause other issue when I do finally get it going again, the problem with my durumax is the TCM Transmission Control Module, I was already at home when issue started.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542786September 5, 2023
STRUCTURE:BODY
I have approximately 7K miles on my truck. The problem I am reporting is the omission of a warning light or some other method of warning if the tailgate which is electronically controlled by a button center near the console, central to and just above an area provided for storage of loose personal items, and also activated by a electronic key FOB which I keep in my pocket while driving. I have had at least 8 instances of the gate opening while driving. I expect others have had the same issue. It seems GM could add a dash light or tone if this happens while vehicle is in motion.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542810September 5, 2023
ENGINE
At 48k miles with all service maintenance performed by GM dealer I experienced a ticking noise and loss of engine power. The vehicle was taken to dealership and I was told it was a lifter problem with no explanation of how or why this has happened. I was without a vehicle for 3 weeks. I picked up the vehicle and was told the vehicle was repaired only to still find the vehicle had hesitation while driving and still had a ticking noise in the engine. I returned the vehicle and am now told the engine needs to be replaced. I was also told that I am responsible for the cost of repairs. I found a class action has been filed against GM for this issue. I have been told that GM does not have a recall issued yet I was told at the dealership they have seen this happen and GM has a Service Technician report on how to fix this issue. At this time my vehicle is sitting at the dealership awaiting a response from GM to see if they will take any responsibility. My truck has been at the dealership since August 7, 2023. I have paid almost $2k and was told I would owe an additional $9300. to replace the engine. I do not have paperwork from the dealership to show service work performed. The dealership has not closed out my ticket however I have paid almost $2k for work performed. The dealership said that they matched the cost I have spent but I have no record of their costs.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542446September 4, 2023
POWER TRAIN
When vehicle is warm and shut off, upon restart it will not go in to any gear, there was no warning lamps. An independent repair facility determined the Transmission Control Module was defective. General Motors has no parts available, and I know fro a fact it is a rather large issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542474September 4, 2023
POWER TRAIN
TCM failed. Couldn’t find the parts required. Truck sat 700 miles away from me for four weeks. Had to have part repaired in hopes it worked. As of now I still have some issues but would not have the truck at all if I had to wait for a part
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542245September 2, 2023
POWER TRAIN
On approximately July 23, 2023, I noticed the vehicle transmission shifting hard from 1st to 2nd gear and then during the following week, this began to occur every time I drove the vehicle. There were no warning indicators appearing on the vehicle for this problem during vehicle operation. Then at higher steady speeds, the engine RPMs began to suddenly and intermittently surge slightly higher, and the steering wheel would shudder for a few moments. This began to occur more frequently and I became concerned that the transmission would catastrophically fail, causing a crash and/or personal injury. At that point I called a local dealer to make an appointment for a transmission oil change and inspection. The vehicle was taken to a local dealer on August 21, 2023 and they confirmed that there was a problem with the transmission, though at this time final diagnosis is pending. To my knowledge, the vehicle or component has not been inspected by the manufacturer, police, insurance representatives or others since I took it to the dealership on August 21, 2023.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542264September 2, 2023
AIR BAGS
Hi , I came on here to see if there was an issue with airbags deploying on the gmxlc sierra 2022. A cow hobbled out into the route 11 , mooers , NY and I impacted with It well over 45mph . My chest hit the steering wheel and my neck was jerked forward and no airbag. Not sure if something is wrong woth the sensor or what. Also be advised the fatality in this incident was the cow annoyed down below.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11542148September 1, 2023
LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
The contact owns a 2023 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the tailgate inadvertently opened without warning. As a result of the failure, a cooler fell from the bed of the vehicle. No warning light was illuminated. The contact was concerned for his safety and the safety of other drivers while driving on the roadway. The vehicle was not diagnosed or repaired. The dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 2,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541802August 31, 2023
ELECTRICAL SYSTEM, AIR BAGS
Instrument panel stops working from time to time. My Guages go crazy. My rpm and speedometer mess up and can't tell how fast I'm going. This has been going on for a few years now. My airbag sensor light is on and was In a light wreck few months ago. Hit pretty hard on front end of truck and yet neither one of my airbags deployed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541849August 31, 2023
POWER TRAIN, ELECTRICAL SYSTEM
my 2011 fmc sierra 3500 drw denali suffered a failure of the Transmission Control Module (TCM). I could barely move the vehicle and almost got into an accident merging into traffic. Forward and reverse was affected. The transmission reverts to top gear after the failure, and makes driving very difficult. There was no warning for this failure Luckily I was minutes from my dealership. This problem could be bad.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541930August 31, 2023
STRUCTURE:BODY
I own a 2011 GMC Sierra 1/2 ton pickup truck. It currently has 98 k miles. The crossmember for the frame rusted out and fell off last month. Yesterday the frame broke in two. I see from looking online that GMC failed to add rust inhibitor to the steel for the frame. This is a safety issue and could have been catastrophic. Is anything being done about this failure? Online forums show this happening throughout the US.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541322August 29, 2023
SERVICE BRAKES
electric parking brake turn on while towing behind Rv did damage to driver side ,had towed it for 340 miles before this happened it is not in my manual to disconnect the ground cable ,when I took it to dealer they gave me a paper stating I need to disconnect the ground cable after putting truck in neutral I told them GM should have put that in the manual instead of tell the dealer .I have turned a claim into GM thru bbb auto line have not heard back yet
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11541501August 29, 2023
ELECTRICAL SYSTEM, POWER TRAIN, STEERING
The electrical system keeps throwing a code for short to ground as well as low voltage codes. The voltage gauge on the dash shows either over charging or under charging. The in dash radio and screen shut off and turns back on by itself while driving down the road. Occasionally while backing up or pulling forward the truck completely stalls. The transmission was subject to the shudder issue, we took it to King Cadillac in Lake City, SC for the transmission flush. After the flush we have not felt the shudder, but instead Occasionally when pulling off from a dead stop, or while crossing the very busy highway my house is on the truck looses momentum almost as if the transmission is failing to engage at all, and all of the sudden about 15 seconds later it engages and accelerates at a rapid rate. The steering is extremely loose in the tires, however the steering wheel engages after about 3/4 of an inch. I have taken it to said King Cadillac multiple times and they maintain that the steering is 100%. Although I can not let go of the steering wheel and continue straight for any length of time. I am constantly having to adjust the steering to match the pull of the vehicle to avoid changing lanes or running of the road. After 60mph the tire shake is horrible, after 70mph it is hard to keep the truck in its lane.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541504August 29, 2023
AIR BAGS
Warning light stated “Vehicle Restraint System requires Service”. Dealership looking into warning light.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541548August 29, 2023
ENGINE
Low coolant light keeps coming on and dealership checks and confirms coolant is not low. The end result is the sensor In the resivor is bad and requires the entire tank to be replaced rather than just the sensor
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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