2025 GMC Sierra 1500 Owner Complaints

Driver seat track continues to break in less than 10,000 miles. Dealer has already replaced two and now the third is broken as well.

NHTSA ID

11775930

Incident

Nov 5, 2026

Was about 1 and a half hours into my 8 hour trip home, when I started to hear a clanging sound coming from my engine after I passed a slow moving RV. The truck ran for about 20 additional minutes when it lost power and shut off. Mileage was at a little over 16,000 miles. No warning lamps, messages or other symptoms of the problem prior to the failure. I was fortunate to be pulling into a parking lot when it shut down, GMC roadside assistance had my truck towed to a GMC dealer where it was determined the engine was blown. They replaced the engine.

NHTSA ID

11775271

Incident

Sep 28, 2026

Vehicle is a 2025 Sierra 1500 Elevation and has made a rattling noise since purchase in May 2025. Radio had electrical issues and required full replacement. Two weeks ago, while driving home on the thruway, the vehicle began to shake violently and display critical warning errors on the infotainment system, locking up and slowing down. Once I pulled over and turned the vehicle off, it would not turn back on. Towed to dealership, where I was told it was a sensor issue that could be fixed the same day. A week later, I was told there was a bent valve that required repair. It has now been two full weeks with no updates on what's wrong with the vehicle or how long it will be under repair, but based on similar complaints, it appears that it will need a new engine since this is a known recurring issue with this model vehicle. This was a massive safety risk to myself and my children if I had not been able to slow down and maneuver the vehicle off the road when it died.

NHTSA ID

11775113

Incident

Oct 19, 2026

On XXX, my 2025 GMC Sierra 1500 AT4X AEV experienced a catastrophic failure while driving on [XXX] Oh. I had approximately 75000 miles on the vehicle when this occurred. A load explosion from underneath the vehicle and smoke, accompanied with metal thrashing noise and loss of power while in the far right hand lane of the highway. Coming to a stop, I saw fire in the grass shoulder so I inched the vehicle forward away from the fire by a couple hundred or so feet. A passing motorist called the fire department and police who extinguished the fire. I had the truck towed to Knapps Motors Chevy in [XXX]. After looking at the truck, they determined the transfer case siezed and luckily exploded the housing rather than locking up the wheels. If a motorist would have been to my right, they would have been the victim of metal shards and burning oil. This not to diminish the terrible possibility of the wheels locking while driving at 75 miles per hour. After working through GMs customer service line, they have been of no assistance whatsoever. They are pushing the repair on the extended warranty company Portfolio, who is in the process of fixing. I've been without a vehicle for more than a month, as im told the transfer case is a known issue and has an updated part number. The 2026 model year has a federal do not drive recall #26V289 due to an improperly built transfer case missing an oil pickup tube. This has been a terribly unnerving experience and feel this truck should be also involved in the recall. Please contact me at [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11774911

Incident

Oct 6, 2026

The contact owns a 2025 GMC Sierra 1500. The contact stated that while her husband was driving 10 MPH, the vehicle lost power. The driver turned off the vehicle and attempted to restart the vehicle; however, the vehicle failed to respond. No warning light was illuminated. A dealer was contacted. The vehicle was towed to the dealer where it was diagnosed and determined that the engine needed to be replaced. The engine was replaced and the vehicle was repaired. The contact stated that the engine was replaced twice. The manufacture was notified of the failure and opened a case. The approximate failure mileage was 64,000.

NHTSA ID

11774549

Incident

Oct 19, 2026

Mileage

64,000 mi

This is a follow up to my recent safety concern on my 2025 GMC Sierra 1500 with the 6.2 engine. Dropped off my vehicle to our GMC service dealer on 10/22/2026 - Oil change and 15K mile check up was getting close. Mileage at drop off was 14,278 and the engine was still making sounds/noise and getting louder. Asked the service advisor to check for metal in the oil or filter. Based on their service review and advisors response, metal was found in the oil filter and engine is ticking. Service department sent information to GM rep for further actions needed. Dealer rep stated that I need a new engine due to this new found issue. Waiting for response from a GM representative at this time. Truck is in my garage at home. I remain very concerned about driving this vehicle at this time. Just called the dealership as I have not heard of any follow up yet. Call went to voice mail of my service advisor. 6.2 Engine is ticking and metal has been found in the filter. Please add this to my original concern on this VIN #.

NHTSA ID

11774468

Incident

Oct 22, 2026

Severe Engine Knock

NHTSA ID

11772979

Incident

Oct 22, 2026

The engine locked up and stalled out while driving. GM replaced engine but still experiencing issues. Dealer has admitted that they will likely recall my model year since it is an ongoing and same issues as recalled trucks. I have a vehicle I am not confident in nor safe it since it stalled while driving.

NHTSA ID

11772806

Incident

Sep 3, 2026

Engine lost power and is smoking profusely. An independent service center told us there is a problem with one or more of the cylinders. No, there were no warning lamps. It's here, but we can't drive it.

NHTSA ID

11772422

Incident

Oct 18, 2026

In April 2025, we purchased a new GMC Denali Sierra 1500 Ultimate pickup truck. Concerns – Many of these comments appear in the Dealer Service Reports 1st Service Visit 10/17/25 At our first oil change and scheduled maintenance (10/17/25) with mileage of 5403 miles, during the drop-off I informed the GM Service Advisor of a clicking sound from the engine which I thought might be a fan belt. When I picked up the truck from Service, the Service Adviser informed me that upon startup, a “clatter” type noise was heard, “reminiscent of bad lifters.” The Service Adviser reported that during the mechanic’s test drive, the “clicking noise would get louder with engine speed.” No trouble codes were found after being checked by the MDI. They checked for misfires and a few misfires were found but “not often. At “idle” during this service call, the Left Engine Bank had a “good click/metallic tap to it.” “When the idle was raised, the Right Bank would get loud and had a loud tapping sound.” The oil change did not show any visible metal particles. The GM Service Department recommended a “complete tear-down of the engine for further inspection,” tentatively scheduled in a few weeks, pending Service availability. The Service Adviser stated he would recommend an engine replacement. 2nd Service Visit 10/27/2025 While driving the truck, I noticed that the engine “ticking” had gotten louder, and a Check Engine light had gone on and off. I returned to the Service Department on 10/27/25 (mileage 5807). The Service Department inspected the vehicle and found no “stored DCTS” but found “noise is there for internal engine noise.” The team recommended “tear-down or possible new engine.” Service appointment was set for 11/3/2025 for 5-days. 3rd Service Visit 11/3-7/2025 Service department reported that there were no problems. Vehicle was not under recall..... Scheduling a oil change this week. 14,500 miles.

NHTSA ID

11772064

Incident

Oct 17, 2025

Vehicle lost power. Pulled into parking lot steering wheel locked. Tried to restart truck nothing happened. Took to dealer they said motor needed to be replaced and it would take 4 to 6 weeks.

NHTSA ID

11771801

Incident

Oct 15, 2026

The contact owns a 2025 GMC Sierra 1500. The contact stated that during vehicle startup, the infotainment system displayed a blank screen and produced no audio volume. The failure also occurred while driving. The contact associated the failure with Preliminary Information Bulletin: PIT6362, which addressed software-related infotainment and radio anomalies. The dealer was contacted. The manufacturer was notified of the failure by phone. The failure mileage was approximately 4,000.

NHTSA ID

11771080

Incident

Jul 15, 2025

Mileage

4,000 mi

I was driving at 70 mph on the highway. I heard clunk and then rattling and saw smoke while losing power. Check 4wd warning illuminated. Came to stop in busy traffic and where I first parked on shoulder, saw shoulder of roadway smoking and on fire. I pulled forward 100 or so feet slowly while hearing more grinding rattling cranking. Came to stop. Fire dept arrived and extinguished roadside blaze. Called towtruck and had towed to [XXX] in [XXX]. 75k miles. No warning just catastrophic failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11769463

Incident

Oct 6, 2026

ELECTRONIC BRAKING SYSTEM FAILURE. VEHICLE WAS PUT IN LIMP MODE WITH A TOP SPEED OF 62 MPH. VEHICLE HAD VERY LITTLE OR NO BRAKING . VEHICLE HAS LESS THAN 13,000 MILES . I AM THE ORIGINAL OWNER.

NHTSA ID

11768518

Incident

Sep 24, 2026

The contact owns a 2025 GMC Sierra 1500. The contact stated that while driving approximately 5 - 10 MPH, the vehicle went into LIMP Mode and failed to properly accelerate, and the transmission unexpectedly downshifted. There was an electrical malfunction, which caused the transmission to downshift. An unknown message was displayed on the instrument panel. The contact stated that the network was not operating at the correct voltage due to the wiring harness. The engine light illuminated after the failure. The vehicle was towed on two occasions to the dealer to attempt to duplicate the failure. The dealer was unable to determine how to repair the vehicle. The vehicle was driven to the dealer in LIMP Mode. The manufacturer, General Motors, was contacted by the dealer, and the contact also reported the failure to the manufacturer. A General Motors service engineer had inspected the vehicle. The failure mileage was approximately 34,637.

NHTSA ID

11765016

Incident

Sep 2, 2025

Mileage

34,637 mi

Turned on vehicle and an alert popped up "Brake system control module malfunction", limited speed to 43 miles per hour, no power breaks worked. I have had no issues with brake system for the first 11k miles. I contacted my local GMC dealership (Banks Chevrolette in Concord, NH) and was told that I would not be able to get an appointment until the 2nd week of November. I told them this was a break system issue covered under warranty and they told me I was welcome to DRIVE to their dealership (14 mi away on INTERSTATES and CITY STREETS) and wait to see if there was any time to plug it in, but they would not guarantee there would be time on their end. I spoke with the service manager and was told the same and that his advice was to "not drive it until November". I was able to take the truck to a shop in town 2 mi away , and they printed off the following codes: P25A U160F U1610 U2418 U2419

NHTSA ID

11764636

Incident

Sep 15, 2026

Super cruise was engaged on I-95 and attempted a lane change. Another vehicle was in a position along side my vehicle that would have resulted in an accident if I had not noticed it and manually grabbed the steering wheel to override the super cruise. I have an appt with the dealer next week. The vehicle is also is occasionally displaying a "service driver assistance system" message

NHTSA ID

11764349

Incident

Sep 14, 2026

I was driving in town when all lights on the dash lit up, and I mean all of them. I was approaching a traffic light in low traffic in the 20-30mpg range. I went to apply the brakes and almost had none. If I was going to estimate how much braking was available, it would be in the 10% range. I drove at 20mph to the nearest dealer. They verified the issues. They reflashed the computer, drove the truck afterwards, and pumped the brakes. They told me they recommended an immediate master cylinder replacement. They had seen this twice already in the month of August. Both times prior to mine the reflash initially worked, but the problem returned within a week, and the master cylinders had to be replaced. The master cylinder replacement was a $2600 repair.

NHTSA ID

11763693

Incident

Aug 31, 2026

When updating the vehicle as prompted by the entrainment system the next day when attempting to start the vehicle it did not start. Vehicle had to be jumped then 6 warning lights came on and disappeared shortly after driving.

NHTSA ID

11763207

Incident

Sep 9, 2026

On XXX my 2025 gmc sierra 6.2L v8 engine experience catastrophic engine failure with no preexisting alerts or warnings. It was towed to Baglier gmc in [XXX] on XXX and is currently awaiting diagnostic evaluation. Upon restarting the vehicle after failure, the engine light did turn on. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11762694

Incident

Sep 5, 2026

So I spent many months trying to aquire a GMC Sierra Denali and with all the issues with the 20 - 24 6.2 engines we were assured by the dealer that all the issues were resolved with the 2025 6.2 models. So we spent big to aquire an 2025. So I bought one new. My truck had 8000 miles on it with 2 oil changes. So we booked a trip to [XXX] at considerably a large expense and loaded up our Harley's on my light aluminum trailer, less than 3.5k pounds and headed that way from [XXX]. We made it to [XXX] and spent the night. Next morning we were heading to [XXX] and the truck blew up on the XXX. We were pulled over on a very busy hi way and had to get truck and trailer towed back to [XXX]. We were stuck there for 3 days while GMC installed a rebuilt motor in my 83k truck and totally missed our entire vacation. On line it said GMC would cover hotel and 40.00 dollars a day food. I am so disgusted after being reassured that GMC had fixed the 6.2 and putting our life in danger blowing up on a major highway, and afterward GMC only gave us 200. For our inconvenience. Our room alone was more not counting the money lost on out trip accommodations. I am so completely disappointed with this truck that we bought new and spent more than we ever had on a vehicle, and am afraid of ever taking another trip in it. How can GM be allowed to do this to people. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11762000

Incident

Jul 25, 2026

Safety Complaint – 2025 GMC Sierra 1500 Tailgate While driving our 2025 GMC Sierra 1500 and towing a trailer, the tailgate unexpectedly opened and dropped down while the vehicle was in motion. No one touched the tailgate button, key fob, or any other controls to activate the tailgate. We were unaware that the tailgate had opened. When we made a turn, the trailer contacted the tailgate and crushed/damaged it. This occurred without any intentional activation of the tailgate release. We believe this presents a significant safety concern because an unexpectedly opening tailgate while driving, especially while towing a trailer, could result in property damage, loss of cargo, or a more serious accident. We are requesting that this issue be investigated to determine whether there is a defect with the tailgate latch, release mechanism, or electronic controls on the 2025 GMC Sierra 1500.

NHTSA ID

11761746

Incident

Mar 15, 2026

Engine making noise during a trip took to dealership and they reported engine is bad and needs to be replaced because it would freeze on the road. Vehicle has 7000 miles.

NHTSA ID

11760628

Incident

Jul 12, 2026

ENGINE STARTED KNOCKING AT 18K MILES AND TOOK TO DEALER AND THEY FOUND METAL IN THE FILTER AND INSTALLED A NEW ENGINE AND ALSO REPLACED THE MIDPLATE GASKET ON THE VALVEBODY DUE TO A HARSH DOWNSHIFT WITHOUT CODES IN THE SYSTEM THIS ENGINE IS GOING ON 2K MILES AND IT SEEMS TO BE FINE NOW BUT THE PROBLEM WITH 6.2 WAS ONLY SUPPOSED TO BE ON THE 21-24 MODELS AND MINE IS A 25 MODEL AND ALREADY HAD A REPLACED AND NOTHING FROM GM WAS SAID TO EXTEND THE WARRANTY ON THIS MODEL AND POWERTRAIN

NHTSA ID

11760587

Incident

Aug 14, 2026

FROM DEALER ASSESSMENT Concern - CUSTOMER STATES WHEN VEHICLE IS ACCELERATING THERE IS A RATTLE Correction - test drove and was able to duplicate rattle/knocking from the engine. checked oil level and condition verified both are good. checked for bulletins and followed 23-NA-170. compared vehicle noise to noise is video and noise is nearly identical. removed oil filter and inspected for debris, found heavy amounts of metal debris present in the filter. performed crankshaft end play mesasurement and found that the crankshaft end play is way over spec at 1/4 of an inch. recommend replacing the engine assembly per bulletin Parts) 1x ENGINE 2x (S)GASKET $0.00 $0.00 6x (S)BOLT 1x BOLT 1x exhaust pipe connector gaskets both sides $0.00 8x (S)GASKET 1x fuel feed pipes all $0.00 1x (S)SEAL KIT 1x (S)GASKET $0.00 1x (S)SEAL 1x W-(S)RADIATOR $0.00 1x (S)HOSE 1x coolant $0.00 1x oil filter 1x oil $0.00 Approved 2026-08-18 Labor: $0.00 Parts: $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Subtotal Line B: $0.00 *Subtotal is before Shop Charge and Taxes

NHTSA ID

11760562

Incident

Aug 17, 2026