2023 GMC SIERRA 1500 Complaints

The 6.2 liter engine spun the #1 and #3 crankshaft bearings. This was confirmed by the selling dealership, Guess Motors, who performed the engine teardown. This complete engine failure was not foretold by any warnings whatsoever. I was able to drive vehicle to the dealership before it stopped running. The dealership has ordered a replacement entire engine from GM however no delivery date has been received and this occurred on 04-04-2025. On 04-24-2025 GM issued recall # N252494001 on this engine configuration.

While driving on the highway warning lights for ABS, Check Engine, traction control and towing disabled came on. Also, the truck was limited to a speed of 62 mph. When attempting to apply the brakes the peddle went to the floor and the truck was extremely hard to stop. Power brakes were gone and manual braking was the only way to stop. After pulling over and restarting the truck the power brakes came back. The truck was taken to the dealer and they claimed the truck needed some updates and was fixed. About four months later this same problem occurred again while coming to a stop causing the truck to miss a stop sign and enter an intersection. The same lights came on and the trucks speed was reduced. After restarting the truck the power brakes started working again and the truck was dropped off to the dealership. The dealer looked into the problems and said the truck needed computer updates but found no other problems. Driving this truck has become nerve racking not knowing if the brakes will stop working again.

While driving on the interstate at approximately 80 mph the engine sounded like it started revving to its max and then it lost power and would not go anymore so I had to try and get to the side of the highway before the momentum stopped. There was no warning lights, indications, or recall notices that this was going to happen. And then had to wait about 2 hours for a tow truck on the side of the interstate. Then the dealership said my engine was seized up and they put a new motor in which took about 2 weeks and they wouldn't give me a loaner vehicle so my husband had to drive approx 3 hours to pick up me and my daughter. I no longer have my invoice that the dealership gave me after the repairs were performed. So after that I was leary of that happening again and traded the vehicle and took a huge loss in trade value not too long after the incident.

I was with my two kids about to go on the highway as I accelerated at the speed of the 60 mph the truck completely shuts down I managed to move to the right shoulder my miraculously had to wait for a tow truck for 3 hours. Got truck towed to the dealership they told me it needed an engine and its back order took them 4 weeks to get ot done 2 days later check engine light came back on I was told only a misfire. I was without my truck for another 2 weeks. All this happened back in January of 2025

I was driving down the highway on cruise control and all of the sudden i heard a squeal, banging noise with no power to accelerate so i pulled over to the side of the road and the engine said low oil pressure and shut down and would not restart. Multiple vehicles swerved to avoid hitting my vehicle creating a safety incident with possible injury and death. No symptoms prior to the failure and vehicle was maintained according to GMC specifications at the dealer with oil changes and tire rotations. Dealer has confirmed engine needs to be replaced but after several weeks they say they are unable to replace the engine because no parts are available and no estimated repair date. This is completely unacceptable and not a timely repair. I am without a truck and still paying for the loan of the truck with interest through GM financial.

The contact owns a 2023 GMC Sierra 1500. The contact was notified of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Upper grille came off and fractured windshield while going down the highway it is a non serviceable part by GM which I believe is strategic seeing that they’ve had issues with earlier models of the the truck you have to buy an entire replacement grille for one issue that shouldn’t be happening was never able to locate part, I assume plastic grille clips dry rotted noticed the part lifted a bit before the entire part failed thought someone was trying to break into my truck . The wind while going down the highway caused them to fail, I’ve seen multiple GMC sierras with the same grille issue, I uploaded before and after pictures of how the truck looked before and after pictures .

Engine Cooling system We were stuck on side of freeway then told to drive to dealership but kept dying and saying it was overheating could only drive 7mph off freeway. Yes dealer confirmed with computer test that coolant flow control valve was malfunctioning. On approximately April 8th 2025 we were on vacation in Biloxi MS we got check engine light took to Dealership in Biloxi. Put on computer said it was coolant control valve they reset it but said parts on National back order but we were fine to finish our vacation and head home. Got to Albuquerque NM on April 22nd it overheated couldn’t go over 5 miles per hour got to Albuquerque dealership couldn’t go any farther they tried to reset but truck would drive more than 5 miles per hour. Told us we would have to leave it part was on back order no idea when it would be available. We had to rent a car to drive to our home in Az .

The contact owns a 2023 GMC Sierra 1500. The contact stated that upon starting the vehicle, there was an abnormal ticking sound coming from the engine. There was no warning light illuminated. The contact discovered that the VIN was included in NHTSA Campaign Number: 25V274000 (Engine, Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure. mileage was approximately 100. VIN tool confirms parts not available.

2023 GMC 1500 Sierra Denali Ultimate tailgate opens without being commanded. This has happened approximately three (3 ) times in the last two months while being driven with the most recent incident occurring today, 04/27/2025. There are no warning lights indicating when a tailgate opens while the vehicle is being driven.