2023 GMC Sierra engine problems
230 of the 485 complaints owners filed with NHTSA about the 2023 GMC Sierra name the engine (NHTSA’s “Engine” heading — the engine and its cooling system). Filed under the same heading: 293 manufacturer bulletins, 1 recall, 4 NHTSA investigations. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.
What owners filed about the engine
Source: NHTSA complaint database3 of the 230 reports a crash · 0 a fire · 0 injuries. Self-reported, unverified.
Filed per year: 2023: 3 · 2024: 12 · 2025: 128 · 2026: 87
Half of the 21 owners who gave an odometer reading reported the engine problem between 9,000 and 29,000 miles. A median of reports, not the life of a part.
485 complaints in all about the 2023 GMC Sierra, 87 filed in 2026. The whole picture, every system →
Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Engine” means the same area of the vehicle, not one fault.
Across model years: GMC Sierra engine problems, every year on file →
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the engine. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
Coolant control valve malfunction Vehicle placed into limp mode while driving with no way to reset. Vehicle taken to dealer and issued verified with part ordered. Multiple dash warning lights and several different limp modes activated prior to vehicle needing to be stopped
Failing coolant control valve causing reduced acceleration warning and engine overheating. Replacement parts unavailable from GM. Vehicle has been at dealership for a month and showing symptoms sporadically since the first few thousand miles getting increasingly worse over time.
Coolant control valve failure. The 3.0 Duramax Diesel engine coolant control valve is known for failure. The part is not available and it has no availability time frame from GM. Vehicle goes into reduced acceleration mode hindering driver from being able yo accelerate safely in traffic
Coolant control valve has failed. Part is back ordered and availability unknown. Truck goes into reduced power mode which makes merging into traffic unsafe
While driving my 2023 GMC Sierra 1500 Denali, 6.2-liter engine on the highway, the engine seized at 22,000 miles. GMC has been working on my truck since 9/7/24 and still no truck.
What is on file about the engine
Source: NHTSA recalls, investigations and manufacturer communicationsRecall filed under this heading
- 25V274000 HighApr 24, 2025 · 597,571 vehicles
- 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. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
NHTSA investigations
- EA26005 Loss of motive power due to engine failure post recall remedyopened Aug 20, 2026 · open
- 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. General Motors (GM) issued R…
- RQ26001 Loss of motive power due to engine failure post recall remedyopened Jan 16, 2026 · closed Aug 20, 2026
- 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. General Motors (GM) issued R…
- EA25007 Loss of motive power due to engine failureopened Oct 23, 2025 · open
- 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. These engines are installed in Model Years (MY) 2019–2024 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2021-2024MY Chevrolet Suburban and Tahoe, GMC Yukon/Y…
- PE25001 Loss of motive power due to engine failureopened Jan 16, 2025 · closed Oct 23, 2025
- 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. These complainants alleged engine bearing failures resulting in knocking and growling noises from the engine’s bottom end and in so…
293 manufacturer bulletins filed under this heading
The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.
Trouble codes named on this system
P30BF P0747 P129F P0016 P023F P0442 P0455 P1098
Codes a bulletin or an owner’s complaint about the 2023 GMC Sierra names on this model year; a code with a record of its own links it.
Other systems with a record on the 2023 GMC Sierra
Source: the same files- transmission and drivetrain problems 91 complaints
- electrical problems 64 complaints
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre engine problems common on the 2023 GMC Sierra?
They are documented: NHTSA holds 230 owner complaints naming the engine on this model year (47% of everything owners filed about it), and 293 manufacturer bulletins, 1 recall, 4 NHTSA investigations are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.
Is there a recall for the engine on the 2023 GMC Sierra?
Yes — one campaign is filed under this heading: 25V274000. A recall is matched by VIN; check yours at nhtsa.gov/recalls.
When do engine problems show up on the 2023 GMC Sierra?
Owners who gave an odometer reading reported it at a median of 21,000 miles; half of them between 9,000 and 29,000. That is when reports cluster, not the life of a part.
What does NHTSA's "Engine" heading cover?
The engine and its cooling system. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.