GMC Sierra Complaints (2014)

895 consumer complaints on file.

#11689345September 24, 2025
STEERING, FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving approximately 25-30 MPH, the power steering became inoperable. The check engine warning light was illuminated due to the fuel tank cap being missing. The contact stated that the failure was related to NHTSA Campaign Number: 14V246000 (Steering). The vehicle was taken to the local dealer, where it was diagnosed with a short in the steering gear. The vehicle was not repaired. The manufacturer was contacted and confirmed that the VIN was not under recall. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689530September 24, 2025
ENGINE
Vehicle stalling at low speeds Oil pressure solenoid stuck fault and P0011 camshaft fault.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11687926September 17, 2025
STRUCTURE:BODY
The vehicle’s frame has severely rusted to the point of structural compromise. My certified mechanic determined on December 10, 2024, that the frame could not pass the state safety inspection due to advanced corrosion. Welding is now required to restore structural integrity. The truck has remained inoperable and sidelined since that date. The frame is available for inspection upon request, and I have photos, repair invoices, and a mechanic’s written evaluation. This same frame was previously reworked by GMC twice: May 7, 2018 – Frame treated for premature rust. November 4, 2019 – Frame recoated after prior treatment failed due to improper descaling. Despite these reworks under GMC direction, the issue has progressed to a dangerous level. The structural integrity of the frame is compromised. A severely rusted frame puts occupants and others on the road at risk in the event of a collision, towing, or even regular driving. A weakened frame could lead to loss of vehicle control, failure to protect occupants in a crash, or catastrophic breakage of suspension or driveline components while in motion. Yes. The problem has been confirmed by an independent certified mechanic, who inspected the frame and advised that the rust is beyond surface level and requires welding to repair. They refused to weld during winter due to safety concerns and advised that the truck could not be driven or pass inspection in its current state. The vehicle was previously serviced under GMC’s direction in 2018 and 2019 by a GMC dealer (Weird GMC) to address early frame corrosion. However, the current failure has not yet been inspected by GMC directly since becoming undriveable in late 2024. I have reached out to GMC Customer Assistance and am awaiting a response. There were no dashboard warning lights or alerts for this issue. The only indications were visible signs of rust, which rapidly worsened after the 2019 rework. My mechanic noted signs of significant corrosion during routine servicing
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11684894September 3, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
1. while driving slow or making a right hand turn the vehicle turns itself off 2. periodically the car does not start/no power and does not respond to keyless car lock 3. periodically the dashboard panel lights will not turn off, flash or some will go off but not all All of the above have been a twice repaired GMC recall 17276 and has been occurring since 2020.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11683380August 27, 2025
EXTERIOR LIGHTING
The contact owns a 2014 GMC Sierra 1500. The contact stated that the headlights were dim, reducing the contact's ability to see the roadway while driving. The dealer was notified of the failure and provided an estimate for the headlights' replacement. Additionally, the contact stated that the vehicle was experiencing excessive oil consumption, and there was smoke coming out of the exhaust pipes intermittently. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 370,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11680470August 13, 2025
ELECTRICAL SYSTEM
Unknown. Battery goes into protection mode.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676939July 29, 2025
SERVICE BRAKES, HYDRAULIC
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. No warning lights were illuminated. The contact stated that the brake pedal was depressed to the floorboard. The failure also persisted while driving downhill. The vehicle was taken to an independent mechanic. The contact was provided information for NHTSA Campaign Number: 19V645000 (SERVICE BRAKES, HYDRAULIC). The vehicle was taken to the dealer; however, the vehicle was not diagnosed or repaired. The contact was informed that the manufacturer had closed the warranty, because the vehicle exceeded 100,000 miles. The manufacturer was not made aware of the failure. The failure mileage was approximately 156,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676145July 25, 2025
SUSPENSION, POWER TRAIN
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle was veering to the right or to the left and was moving upwards and downwards. Additionally, the contact stated that the vehicle was veering excessively to the left or to the right while turning. The vehicle was taken to an independent mechanic, where the front brakes were replaced, and the contact was informed that the sway bar end links were fractured due to rust. The contact stated that upon inspecting underneath the vehicle, the lower parts of the links had detached, and one of the links was flapping. The contact purchased new parts from the dealer, and the mechanic replaced the links. Additionally, the contact stated that the vehicle was experiencing hard shifts while driving from a complete stop and while coming to a stop. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 67,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672901July 11, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
Truck completely shuts off at any speed going down the highway. Complete loss of power. Have to coast to side of road and restart vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672483July 10, 2025
SERVICE BRAKES
Pressing the brakes more than once locks the brakes up multiple times this has happened. Not an isolated event
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672478July 10, 2025
ELECTRICAL SYSTEM, POWER TRAIN, STEERING
Truck randomly shuts off and steering wheel locks up going down the road
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671482July 6, 2025
POWER TRAIN
Catastrophic transmission failure. Original transmission failed at 113,00 miles. I replaced it at the dealership with a factory rebuilt transmission and that transmission failed after only 40,000 miles. Now the vehicle is back in the dealership shop and they want me to replace the transmission a third time. This transmission is the 6L80 which is prone to fail, the torque converter fails and the transmission locks up I contacted General Motors and filed a complaint with them and they said they would not take any action or assist me with the repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669678June 27, 2025
POWER TRAIN, SUSPENSION
Within the first week of buying my 2014 GMC 1500 SIERRA, the transmission fluid was black in griddy. I have had it flushed, then filter changed and new fluid put in within 2 week time frame. A week later had to put a new transmission in it. It barely would drive. So a purchase at 2,999 then to a transmission 4,800 and new control arm with ball joint with new axels. They were busted. Another 2,000. Its sicking. Advice
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11668829June 24, 2025
FUEL/PROPULSION SYSTEM
Vehicle engine sputters/stalls. I see there is a fuel pump recall on SOME 2014 GMC Sierra’s but mine is not on the list per your website.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667320June 17, 2025
POWER TRAIN, ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL
During a turn in the parking lot my vehicle would not allow me to turn something with traction control came up on the screen. The past few days the car got stuck at 0 rpms while driving and did not feel I had adequate power and other times has stalled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11664651June 3, 2025
EXTERIOR LIGHTING:HEADLIGHTS
The contact owns a 2014 GMC Sierra 1500. The contact stated that while her husband was driving at various speeds, the front headlights failed to function as intended. The contact stated that the headlights were dim and foggy. The failure limited the driver's visibility, preventing the driver from safely operating the vehicle. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure recurred, and the contact was no longer driving the vehicle at night due to the safety concern. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11663965May 30, 2025
SERVICE BRAKES
The brakes on my GMC Sierra 1500 lose braking power when operating at slow speeds. The brake pedal will lose braking power, causing the vehicle to not stop at slow speeds. This is particularly troubling when pulling into and out of parking spots, driveways, crosswalks, and other areas. I use my truck to pull a boat and when I back my boat into the water at a boat launch, the brakes will lose power when I am in reverse causing the truck to slid into the water.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662823May 23, 2025
SERVICE BRAKES
I am experiencing an issue with a hard brake pedal on my 2014 GMC Sierra 1500. This same issue was previously addressed through a recall and special coverage program by GM, which I had performed. However, the hard brake pedal condition has returned, significantly impairing stopping power at low speeds. This poses a serious safety risk, especially when towing or parking. I can no longer park my trailer safely. The vehicle is difficult to stop, and braking distance has increased substantially. This is a known issue with this model and year. It appears the prior recall may not have adequately resolved the root cause. I am requesting that NHTSA investigate whether additional action or recall extensions are warranted.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662398May 21, 2025
STEERING
The contact owns a 2014 GMC Sierra 1500. The contact stated while driving at an undisclosed speed and attempting to turn the steering wheel, the vehicle lost power steering functionality. The contact stated that the failure had recurred intermittently and had progressively worsened. A message advising of a power steering failure and to drive safely was displayed. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 150,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662115May 20, 2025
POWER TRAIN
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving on several occasions at speeds of approximately 35 MPH, the transmission shifted abnormally, and the vehicle started vibrating. Additionally, the contact stated that while driving at speeds of 65 MPH and higher, the failure worsened. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 146,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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