GMC Sierra Complaints (2014)

895 consumer complaints on file.

#11660907May 14, 2025
ENGINE
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving on the highway at 55 MPH, the vehicle lost automotive power and the steering wheel became stiff. The contact stated that the vehicle decelerated to 20 MPH, with several unknown warning lights were illuminated. The vehicle was taken to an independent mechanic where it was diagnosed, and the contact was informed that the engine had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 101,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11659196May 6, 2025
ENGINE
The engine has 160,000 miles and just driving the camshaft and the lifters went out during normal driving. It showed no problems before hand. I’ve heard from multiple people that this is a big issue with the 6.2l gmc Sierra engines. The mechanic also stated it’s there biggest problem. The repair cost are $4,000 - $6000 dollars and the have to pull the whole engine and just fixing those two things. The cost of an engine is $7000 for a used with 100,000 miles and to me it would just happen again in around 60,000 miles or less. For a new engine non oem so an off brand it would cost $8,00 - $10,000 just for the engine. Almost as much as the truck cost not including the labor. This is completely unacceptable cost for repair for a common problem with this truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658923May 5, 2025
POWER TRAIN
Transmission shutter, not shifting correctly. Had to replace transmission
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11659007May 5, 2025
ENGINE, ENGINE AND ENGINE COOLING
The contact owns a 2014 GMC Sierra 1500. The contact stated while driving 60 MPH, the check engine warning light illuminated. There was an abnormal knocking sound coming from the engine. The contact determined that the engine had seized. The contact stated that the failure was related to NHTSA Campaign Number 25V274000 (Engine and Engine Cooling). The vehicle was towed to the local dealer, where it was diagnosed and determined that the failure was due to the lifters, and there was low compression in the engine. The vehicle was not repaired. The vehicle was towed to an independent mechanic. The manufacturer was not contacted. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11657701April 30, 2025
STRUCTURE:BODY, ELECTRICAL SYSTEM, ENGINE
I am the original owner of a 2014 GMC Sierra 1500 (VIN: [XXX] ) and began experiencing serious mechanical and electrical issues while the vehicle was still under warranty around 40,000 miles. These included engine RPM fluctuations at idle, vibrations under acceleration above 65 MPH, and intermittent misfiring — all symptoms that are now believed to be early indicators of defective lifters or valve train components. I also experienced repeated electrical failures including a rear turn signal malfunction due to melting/corroded taillight sockets, a thumping rear-end noise, differential knocking, and body panel issues (hood lifting at highway speeds). These were reported multiple times to authorized GMC dealers (Mike Haggerty GMC and Rizza GMC), but I was told there was no issue or no repairs were made. GM refused to assist when I escalated the issue in 2017 via a detailed email, despite all problems occurring within the warranty period. I’m now dealing with a persistent ticking sound from the engine and loss of power, which matches widespread reports of lifter failure in GM’s 5.3L/6.2L V8 engines. These failures pose both a mechanical and safety risk due to stalling, misfiring, and potential electrical fires (in my case, from a failed taillight socket). A class action lawsuit ([XXX], et al. v. General Motors LLC) has been filed regarding these known defects, yet GM has not issued a recall. I’m filing this complaint to add my case to the record and urge NHTSA to investigate these issues. I have full documentation of the original complaint and am willing to provide it upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656848April 25, 2025
POWER TRAIN
I was driving around a lake with my family. We were fishing. I had no warning at all and my transmission started to sputter and jerk extremely bad and my brakes did not work at the same time. I had to use my parking break to stop my family and I from going into the lake at 40mph. I looked up on many websites and forums and saw multiple people with the same issue. I am afraid that this will happen to a young driver and it be very tragic. Please do a recall. My truck is still sitting at my house broken. I am on disability and can not afford to fix it. I just keep paying my payments with no use of my truck. Please I beg of you.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11649197March 19, 2025
STRUCTURE:BODY
We have a 2014 GMC sierra 4.3 V6 6 speed automatic.. with only 100k miles and the frame is rusted and cracked rear shocks mounts are rusted and broke and the leaf spring mounts are rusted and they broke.. this should be a recall issue..
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11638618January 26, 2025
ENGINE
Timing chain broke with no warning and seized engine. Complete engine failure. Engine had to be replaced. Engine was inspected and replaced by certified gm dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11635925January 14, 2025
POWER TRAIN
There is a torque converter recall on the 2014 GMC sierra 1500 however my vehicle was not included in the recall but my transmission / torque converter went out.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11631491December 18, 2024
SERVICE BRAKES
This vehicle has the same issue as other recalled GMC Sierra vehicles - the brake booster pump is failing, causing braking difficulty, particularly at low RPM and after repeated presses of the brake pedal.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11630406December 12, 2024
POWER TRAIN
Failed transmission
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11629310December 6, 2024
SERVICE BRAKES
I was backing my boat down the ramp and the brakes were giving out. I know this was a recall issue, in the past, that I had repaired. Clearly, they repaired it with the same faulty part because it has happened again. When I took it to be repaired they said I had to pay for it this time. The issue wasn't resolved but only deferred until later, with a temporary fix. I could have ended up in the river and drowned. Paying the dealership to fix a safety issue caused by their defective parts is ridiculous.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11624661November 12, 2024
UNKNOWN OR OTHER
Rusted out frame. 130k miles and well cared for. I don't think a 10 year old vehicle should have a rust hole in the frame.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11624573November 11, 2024
UNKNOWN OR OTHER
I bought this truck used, in 2022 for $24,000... had it put up on a lift and fully gone over before purchasing. Roughly 18 months later I was notified by the garage that there were some rust holes in the frame that needed to be fixed. I had those holes repaired in March 2024, and the vehicle was inspected. At this time I went over the entire frame and found no more trouble spots. I recently went to trade-in the vehicle to buy something smaller and the dealership told me the frame was "rotted" and that the truck was essentially worthless and actually dangerous to drive. These frames are rotting from the inside out, and go from a sellable and valuable truck, to worthless within months or years. GM used inferior steel, inferior rust prevention, and is leaving countless owners stranded with vehicles they cannot sell, are unsafe to drive, and are still paying on. I still owe $10,000 on the truck and the best offer I've gotten has been $3,000. My options are to either put thousands of dollars into the vehicle and pray the rest of the frame does not suffer the same fate (unlikely), or junk the truck and buy another vehicle, meaning I'd need to pay two car loans off and only have one usable vehicle. GM knew about this issue and did not fix it and now hard working Americans are being financially devastated because of it. I bought a nice, clean 8 year old truck, and 2.5 years/20k miles later I'm left with junk and a depreciation of roughly $1 per mile for the time I've owned this vehicle. This has been an extremely stressful situation which has left me coming to terms with the fact that I'm most likely losing $10,000 because of this frame issue. This truck brand new sold for over $42,000 and 10 years later is worth about $2,000, if that. It was not beat, or neglected - simply driven and used as intended. This is unacceptable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11624346November 9, 2024
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
While driving, my wife and I heard a bang, and when she went to turn her head, she noticed that the vehicle was smoking from rear defroster, and the back windshield had smashed. we immediately pulled over and the vehicle did not stop smoking until we turned off the rear defroster. This put our safety at risk as the entire vehicle could’ve caught fire. When we went to check to see if it had been recalled, Our vehicle did not have any open recalls But we found that there were many other GMC Sierra trucks with this issue. We contacted our local dealer who confirmed that he had seen this happen to other GMC Sierra trucks. There was no warning light Or other indicator that this was going to happen. Unfortunately, Our vehicle was not included under recall N192265660 and we strongly recommend that another investigation is performed to include all 2014 GMC Sierra trucks. I have a video showing our vehicle smoking with a smashed, sliding Back windshield.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11624136November 8, 2024
STEERING
The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving 15 MPH and making a right turn, the power steering malfunctioned, and the steering wheel became difficult to turn in either direction. After turning off and restarting the vehicle, the failure was self-corrected. The cause of the failure was not yet determined. The local dealer was not yet contacted. The manufacturer was notified of the failure. The failure mileage was 120,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11620327October 17, 2024
POWER TRAIN
The contact owns a 2014 GMC Sierra. The contact stated that while making a right turn into the driveway, the steering wheel had become stiff. No warning light had illuminated. The vehicle was no longer being driven since the steering wheel was too stiff and required excessive force causing control to be lost while driving. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 105,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11619635October 14, 2024
STEERING, ELECTRICAL SYSTEM
I am experiencing episodic loss of power steering assist without warning. This lasts for several seconds then power steering is restored. "StabiliTrak” message may be displayed during the event. On one occasion my radio also went off when my power steering failed. On one occasion my vehicle died shortly after losing power steering which almost resulted in me having a motor vehicle accident. I reported the problem to the GMC dealership and have scheduled the next available appointment to have it serviced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11618452October 7, 2024
UNKNOWN OR OTHER
GM refuses to repair the defective finish on my truck, their claim is that it only applies to trucks covered under the 3 year -36k warranty. This is a manufacturing defect that they admit to in the attached TSB. There should be a recall mandated for this. We spent a ton of hard earned money on these trucks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11618453October 7, 2024
ELECTRICAL SYSTEM
The vehicle lost ALL power, completely shut off with no warning while driving. There were no warnings or anything. Was stuck for about 5 minutes and had to let cars go around me (no power and no warning lights, so could not even use hazard lights). I did some reading and it people have said this could be a problem with negative battery cable needs to replaced. The vehicle started about 5 minutes later with no issues and had to reset clock and date.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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