Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2023 GMC Sierra 1500 owners, lightly cleaned up (personal details are redacted by NHTSA).
I just left the gas station from getting a beverage, I got onto the interstate and had gone roughly about 3 miles before setting super cruise a few minutes after that the interstate takes a turn to the left with an exit on the right. Slightly right as I was just getting into the turn my engine shutoff and or died making my truck uncontrollable causing me to drive off the interstate into some small trees between the exit and the interstate. I was not injured and no other vehicles were involved. My truck is currently at the insurances storage yard and they care claiming it to be totaled. I have contacted GM and filled a claim however they are saying they aren't responsible because the insurance company has my truck. …
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle shuddered while in first gear. The contact stated that the transmission sounded strained and shifted rough before slamming into gear. The vehicle was taken to the dealer; however, no cause for the failure was found. The dealer diagnosed the vehicle and determined that the vehicle was oversteering while turning to the right. The dealer replaced the valve and torque converter. On another occasion, while driving at an undisclosed speed, the vehicle accelerated independently. Most recently, a burned transmission fluid odor was coming from the front of the vehicle and entered the cabin through the A/C vents. There oil stains found on the ground on several occasions. …
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving uphill, the vehicle unexpectedly lost motive power. There was no warning light illuminated. The vehicle failed to restart and was towed to the dealer, where it was diagnosed, and determined that the engine block had failed and needed to be replaced. The vehicle was repaired. The contact stated that later, while driving at an undisclosed speed, the vehicle failed to shift into gear properly and jerked abnormally. There was no warning light illuminated. The vehicle was returned to the dealer and was diagnosed with transmission failure, requiring the PCM/TCM to be reprogrammed. The vehicle was repaired. …
While towing my boat to the Florida Keys, I encountered a series of mechanical issues on Interstate 75. The engine's exhaust became excessively loud, causing the engine to abruptly shut off. Despite successfully maneuvering into the safety lane, I was unable to restart the engine. I promptly contacted the dealership, which dispatched a tow truck to my location. However, the tow truck driver was unable to put the vehicle in neutral gear. Subsequently, I reached out to GMC, which informed me that the tow truck required a flatbed for transportation. I waited another two hours for a flatbed truck to tow the vehicle to the dealership. A few days later, I received notification that my engine had seized, necessitating an engine replacement. The dealership informed me that the 6.2-liter engine was experiencing a national backorder. …
The contact owns a 2023 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle experienced a loss of motive power. The contact shifted to neutral(N) and was able to restart the vehicle. Additionally, the contact stated that while driving 55 MPH and pulling an unloaded trailer, the vehicle suddenly stalled. A message advising the contact to shift to neutral(N) and to attempt to start the vehicle was displayed; however, the vehicle failed to restart as intended. The contact was still able to use the power brakes and the power steering, which allowed the contact to pull over in a safe area. The vehicle was towed to the dealer, where it was diagnosed that the presence of copper filings in the oil had caused the engine to run roughly. The dealer determined that the engine needed to be replaced; however, the part was not available. …
The contact owns a 2023 GMC Sierra 1500. The contact stated while driving approximately 60 MPH, the vehicle inadvertently decelerated to approximately 30 MPH and went into LIMP Mode. The check engine warning light, the service power steering warning light, the service transmission warning light, the low tire pressure warning light, and the traction control warning light were illuminated. The contact stated that a message was displayed on the instrument panel to "Service 4-WD and "Reduce Acceleration - Drive with Care. The contact stated that the climate control system increased to 76 degrees. The vehicle was taken to the dealer where it produced codes: P00FF, P1789, P25A2, U0073, U0402, U0418, U1610, U1643; however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 5,000.
The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at speeds of 70-75 MPH or faster, the vehicle failed to accelerate or downshift without warning. The RPM increased; however, the vehicle failed to accelerate. The vehicle hesitated and jerked while changing gear. The dealer was contacted and diagnosed that there was metal in the oil which could cause engine failure. The dealer had performed several firmware updates; however, the failure persisted. The manufacturer was made aware of the failure and opened a case. The failure mileage was 41,000. VIN tool confirms parts not available.
The contact leased a 2023 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that while driving approximately 35 MPH, the vehicle experienced reduced motive power. Several unknown warning lights were illuminated. The contact stated that the failure had recurred on another occasion. The vehicle was taken to the dealer, where it was diagnosed and determined that the engine needed to be replaced; however, the part to do the recall repair was not yet available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 26,000.
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.
The contact owns a 2023 GMC Sierra 1500. The contact stated that while operating the vehicle, there was an engine knock at start-up, and the engine intermittently hesitated and skipped. The vehicle was taken to the local dealer, who performed a PICO test on the engine, and the engine passed. Later, while hauling a trailer, there was a rattling sound coming from the engine. The vehicle was taken back to the dealer, who diagnosed the vehicle and determined that the engine needed to be replaced. The engine, radiator, and oil cooler were replaced, and the vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 17,000.
Related recalls
Engine and engine cooling › Engine › Hard parts internal/mechanical
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine.
Remedy: Dealers will inspect the engine, and as necessary, repair or replace the engine. For vehicles that pass inspection, dealers will add higher viscosity oil, install 6 oil fill cap, replace the oil filter, and update the…
NHTSA investigations
Loss of motive power due to engine failure post recall remedy
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement.
Loss of motive power due to engine failure
On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM's full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine.
Loss of motive power due to engine failure post recall remedy
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement.
Loss of motive power due to engine failure
The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274.
Engine complaints in other Sierra 1500 years
Frequently asked questions
How common are engine problems on the 2023 GMC Sierra 1500?
NHTSA has 231 complaints about the engine & cooling of the 2023 GMC Sierra 1500, 47% of the model year's 492 complaints.
Is there a recall for 2023 GMC Sierra 1500 engine problems?
Yes — NHTSA recall 25V-274 (hard parts internal/mechanical, Apr 24, 2025). Recall repairs are free at authorized dealers.
At what mileage do 2023 GMC Sierra 1500 engine problems start?
Half of the complaints with a recorded mileage happened before about 21,000 miles, and 63% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 0 fires and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.