GMC Sierra Complaints

15,732 consumer complaints on file.

#11431359September 1, 2021
POWER TRAIN
Within a couple of days after purchasing the vehicle new I noticed a vibration or shudder when the transmission shifted. Also, the truck would slam into gear almost like being hit in the back end, and on a few occasions while driving on the highway the truck would just downshift by itself thereby causing the engine RPM's to rev above 5,000. It has been to the dealer four times, transmission has been re-calibrated, the new and improved fluid flush and these problems still exist. The truck has just under 60K miles and has started downshifting on a regular basis causing the engine to rev. How long is that going to last before the engine blows or causes permanent damage?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431404September 1, 2021
ELECTRICAL SYSTEM, STEERING
When making turns left and right at low speeds power to the truck shuts off, the steering wheel jerks left or right and warning lights and beeps are activated. The vehicle will continue through momentum, but as you try to turn the steering wheel, the wheel will jerk violently rendering the turn dangerous. This also happens when backing up and turning. The vehicle has to placed in park, ignition shut off and turned back on to continue through the turn and drive. This issue is sporadic and unpredictable. I've avoided near accidents on 5 occasions. The same symptoms occurred during the 2015 GMC Power Steering recall. I've contacted a dealership but was told it could not be fixed without my VIN number being included in the recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431215August 31, 2021
AIR BAGS
Takata recall. The contact owns a 2012 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 21V054000 (Air Bags) however, the part to do the recall repair was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the recall but informed the contact that parts were not available. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts are not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431245August 31, 2021
AIR BAGS:SIDE/WINDOW:CURTAIN
Curtain air bags deployed after loosing traction a bit in the highway also causing seat belts to get locked. Acceleration pedal will get stuck at times. Needed to push brake pedal half ways or more for brakes to kick in. GM brake recall seems to have fixed that. A/C condenser and compressor continue to fail.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431270August 31, 2021
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Issue 1: Front left sensor(s), after a rain, car wash and now after an oil change, continuously vibrates the drivers seat and the red light warning stays lite indicating that an obstacle is located near the left front of the truck. This has happened on several occasions and after a time both indicator stop. Issue 2: When traveling on a freeway, twice now, the cruise control suddenly disengaged or decreased mileage, as if it had detected a vehicle in front of us. There was no vehicle within a quarter mile of us front or back, nor any vehicles on the side. No debris in the road either. Usually when the adaptive cruise is set and detects something in front the icons on the dash turn orange and starts to flash. That didn't happen, rather the cruise icon changed to blue in color and the truck slowed. This I would consider a safety risk. Both instances (December 2020 and April 2021) have been reported to a dealership and noted in a file. When the customer care person attempted to get malfunction codes, nothing appeared to be wrong with the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430979August 30, 2021
AIR BAGS:SIDE/WINDOW:CURTAIN, SEAT BELTS:PRETENSIONER
System that failed was the air bag system , Yes it can be available for inspection with notification, My family and friend were put at risk when the air bag system deployed in a parked car and seat belt restraints were deployed pulling them back into the seats , not moving and no other cars around it or near it went off Randomly it was NOT IN AN ACCIDENT , injuring the 3 occupants. The problem is still pending , At the dealer, and General motors has been notified . Case 9-6893265248, General Motors Product Assistance Claims (PAC) There has been a police report filled with local officials, I don't think the dealership has inspected , Buy recommendation of GM, since this is none accident related to the air bag system going off randomly, Very freighting to me and my family. No warning lamps no indication of anything wrong with the vehicle, prior to incident, And one of the boys could not exit the car due to the seat belts being cinched down on him during the air bag explosion. Incident happened 8/22/2021 at about 10:15 to 10:30 AM A week latter we are still waiting on answers from general motors as to what happened , This vehicle has never been in an accident , And we have all the service records from the dealership , The only place it has been serviced, GM has download data from the computers, And we have asked for copies of those data files as well, We do have all the service records as well should you need them.
Crash:
No
Fire:
No
Injuries:
3
Deaths:
0
#11431055August 30, 2021
VEHICLE SPEED CONTROL
Vehicle suddenly went into Reduced Engine Power while driving in heavy traffic. Vehicle immediately began to slow down and although there was some throttle response it was difficult to maneuver through traffic to get to the side of the road. This event happened around the 31,000 mile mark. The Reduced Engine Power message came on, but I do not remember hearing an audible alert. Being a 40 year Automotive Technician for GM, I am familiar with pulling codes and replacing parts. I called the dealership to see if this was covered by warranty and was told no. After pulling the codes, I personally replaced the Throttle Body Sensor and the Accelerator Pedal Assembly, but the vehicle continued to go into Reduced Engine Power mode. I took the vehicle into the dealership and they diagnosed the cause as a corroded connector. The connector was replaced and the vehicle was returned to me. After a little over one month and less than 1,000 miles the vehicle is once again going into Reduced Engine Power mode. I can have my vehicle available for inspection if necessary.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431064August 30, 2021
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, VEHICLE SPEED CONTROL
Transmission Control Module Since the summer of 2020 the vehicle has at least half a dozen times, without warning, experienced the following symptoms (most recently July 27, 2021 when I captured it on video). 1. power door locks begin cycling open and closed 2. intermittent chime operation 3. transmission locks into a single gear and won't shift or will shift harshly 4. gauges fluctuate 5. traction control and stabilitrak turn off 6. service traction control and service stabilitrak messages appear 7. transmission position indicator disappears
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431107August 30, 2021
STRUCTURE:BODY
The contact owns a 2011 GMC Sierra 1500. The contact stated that while having routine maintenance performed on the vehicle, she was informed that the sub-frame was rusted. The vehicle was taken to the local dealer who took photos. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure however, no further assistance was provided. The failure mileage was approximately 86,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430957August 29, 2021
UNKNOWN OR OTHER
Dash cracked. A known problem for these vehicles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430809August 27, 2021
SERVICE BRAKES, STEERING, ENGINE
Driving the car it started backfiring and then the ESC light came on and the car engine seemed to become erratic as well as steering and braking error messages and the check engine started blinking. Very scary before I got it pulled over and very thankful I wasn’t on the highway etc. I’m seeing all the issues online sounds like the supposed fixes for the 2019 models having issues aren’t solving the problem. I bought mine in April and 4 months later it’s become unreliable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430578August 26, 2021
SUSPENSION
On 22 December 2020, I received a 2021 GMC Sierra 1500 SLT X31 Truck. The day that I drove it I notice that the Truck was riding as though it had a low Tire issue. It was riding bouncy. I had no low tire light. I checked the Tire Pressure and they all was over inflated. I brought the pressure back to range, but the Truck was riding the same over rough and bumpy roads that the rear end of the Vehicle was shifting from side too side when you hit a bumpy or on rough roads. it felt like the rear end was coming off the ground very frighten. I called GM they assigned a case number and I took the Truck to Three dealership with the same answer that all bolts were tighten to Spec. Ok I get that, but did not address the problem that the truck is doing. I am not comfortable driving this truck especially when you have no I deal when your terrain will change and the back end of y0our Vehicle moves from side to sider on you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430429August 25, 2021
UNKNOWN OR OTHER
Dashboard has cracked right in the middle. Happened overnight.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430507August 25, 2021
POWER TRAIN
This complaint follows the same pattern for thousands of vehicles manufactured by General Motors. The specific component is the 8L90 (RPO-5MU) 8-speed transmission. The vehicle has experienced torque converter shudder since the purchase date of 06/28/2016. Numerous "attempts" via TSBs and cover-ups by General Motors has failed to alleviate the common shifting, shuddering, rough shifting, LURCHING out of control along with appurtenant damage to adjacent components and structures within the vehicle itself. The vehicle manufacturer has attempted to forestall remedy at the expense of consumers. It has knowingly violated specific requirements for merchantability of said vehicle. IF SUCH KNOWLEDGE had been in my possession prior to purchase, I would NEVER have purchased the subject vehicle. Damage to torque converter components via polluted fluid and destructive particles caused by torque converter malfunction are situated throughout the entire structure of the named Transmission itself. Valve bodies. Gears. Filters, Fluids and tolerances have all been affected by the KNOWN DEFICIENCY by the stated manufacturer: General Motors Corporation. General Motors has shown neither the desire; nor will, to effect a meaningful and reliable solution to this problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430243August 24, 2021
ELECTRICAL SYSTEM, STEERING, SERVICE BRAKES
THE TRUCK JUST SHUT OFF ALL ELECTRICAL AND DASH CONTROLS AS I WENT TO TURN INTO MY DRIVEWAY. ITS DONE IT TO ME TWICE SO FAR IN THE LAST 3 WEEKS. . NO BRAKES AND NO POWER STEERING.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430098August 23, 2021
FUEL SYSTEM, GASOLINE
The contact owns a 2011 GMC Sierra 1500. The contact stated while driving 8 mph, he started to smell fuel fumes inside the vehicle. The contact stated no warning light was illuminated. The contact stated that while inspecting under the vehicle and he noticed a fuel leak. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was 119,543.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430139August 23, 2021
ENGINE, POWER TRAIN
Experienced error code of P0307 after vehicle backfired while on highway. Check engine light and stabilitrak lights immediately turned on and vehicle was shaking violently. Immediately took vehicle to an independent shop to have it looked at. After running diagnostics, pressure tests, and bore scope. It has been determined that piston in cylinder 7 is a complete loss and has a 0 pressure reading. From talking with shop owner he said he sees this issue quite often with GM vehicles due to DOD or AFM (active fuel management) that GM has on their engines. I'm at just shy of 67k miles, out of warranty, and needing to replace the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430187August 23, 2021
TIRES, TIRES:TREAD/BELT
LT265 60 R20 Goodyear Wrangler SR-A tire experienced a tread separation while traveling at 68 MPH. This resulted in significant vibration in the steering. This tire was inspected at a tire shop and the tread separation was confirmed. The tire still had 7/32 of tread left at the time of the failure. There were no prior indications of the eminent failure of the tire. This was the first of two Goodyear Wrangler tire failures for tread separation within 300 mile of each other.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430190August 23, 2021
TIRES, TIRES:TREAD/BELT
LT265 60 R20 Goodyear Wrangler SR-A tire experienced a tread separation while traveling at 68 MPH. This resulted in significant vibration in the steering. This tire was inspected at a tire shop and the tread separation was confirmed. The tire still had 7/32 of tread left at the time of the failure. There were no prior indications of the eminent failure of the tire. This was the SECOND of two Goodyear Wrangler tire failures for tread separation within 300 mile of each other.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11430196August 23, 2021
EQUIPMENT
The contact owns a 2019 GMC Sierra 2500. The contact received notification of NHTSA Campaign Number: 21V496000 (Equipment) however, the part to do the recall repair was not available. The contact mentioned that the manufacturer exceeded a reasonable amount of time for the recall repair. The dealer was contacted and confirmed that the part was not available. The contact had not experienced a failure. The manufacturer was not made aware of the issue. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Sierra