GM service campaign N252540910
What it saysCertain vehicles listed above may have a condition in which a quality issue with the engine was identified. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated Feb 25, 2026, received Feb 19, 2026, about the engine — 2 documents under this number. It names 3 model years across Chevrolet, GMC and Buick (2026). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC · Buick.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Service Update. Certain vehicles listed above may have a condition in which a quality issue with the engine was identified. Dealers will replace the engine.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N252540910 | Service campaign | Feb 25, 2026 | 11029018 | PDF, 322 KB |
| N252540910 | Service campaign | Feb 19, 2026 | 11028911 | PDF, 323 KB |
What the document itself lists
The manufacturer titles it “N252540910 - Service Update”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 11604736 | — | — |
| 12744958 | Engine | — |
| 13579646 | Air Conditioning Compressor and Condenser Hose Seal-Large | — |
| 13579648 | Air Conditioning Compressor and Condenser Hose Seal-Small | — |
| 26381263 | Catalytic Converter Gasket | — |
| 15032594 | Catalytic Converter Nut | — |
| 11547841 | Drivetrain and Front Suspension Cradle Bolt | — |
| 26416290 | Exhaust System Intermediate Gasket | — |
| 11588728 | Front Wheel Drive Intermediate Shaft Bracket Bolt | — |
| 11612295 | Front Wheel Drive Shaft Nut | — |
| 90223082 | Front Wheel Drive Shaft Retaining Ring | — |
| 12728652 | Fuel Feed Intermediate Pipe | — |
| 12737839 | Fuel Injector Nozzle Housing Seal | — |
| 12645181 | Fuel Pump Housing Seal | — |
| 12697072 | Intake Manifold Gasket | — |
| 12735608 | Oil Filter | — |
| 12670252 | Oil Level Indicator Tube Seal | — |
| 19132944 | Power Transfer Unit Half Shaft Seal | — |
| 19132950 | Power Transfer Unit Half Shaft Retainer Clip | — |
| 23432713 | Power Transfer Unit Propeller Shaft Retainer | — |
| 23321677 | Power Transfer Unit Propeller Shaft Seal | — |
| 12701703 | Turbocharger Air Inlet Adapter Seal | — |
| 12697763 | Turbocharger Coolant Feed and Return Pipe Gasket | — |
| 12669556 | Turbocharger Coolant Feed and Return Pipe Gasket | — |
| 12739848 | Turbocharger Exhaust Pipe Gasket | — |
| 12728638 | Turbocharger Heat Shield | — |
| 11612078 | Turbocharger Nut | — |
| 12695721 | Water Outlet Seal | — |
| 19432331 | Engine Oil Dexos1 Gen 3 0W-20 | — |
| 12346290 | Engine Coolant DEX-COOL | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9108293 | Engine Replacement AWD FWD Add: Recover/Recharge R-1234yf A/C System | 13.8 hrs |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches GM’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote.
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themChevrolet 1 model year
GMC 1 model year
Buick 1 model year
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 3 model years this bulletin names have filed 42 complaints with NHTSA since 2015. 7 of them name Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The contact owns a 2026 Chevrolet Traverse. The contact’s wife stated that while driving 55 MPH, the electronic control system and brake system failure the vehicle decelerated and went into LIMP Mode. The brake pedal became spongy, and while driving, the vehicle coasted to a stop.
2026 Chevrolet Traverse · Engine · filed with NHTSA Oct 7, 2026 · ODI 11769511
Driving home from work on interstate, 2 month old 2026 Buick enclave jolted and shut off completely while going 65mph. Barely pulled over safely to the left side (Oklahoma drivers).
2026 Buick Enclave · Engine · filed with NHTSA Jun 30, 2026 · ODI 11747495
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group88 other manufacturer communications filed against these GM models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N262546590-01 | Service campaign | Jul 15, 2026 | Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This sp… |
| N252508350 | Service campaign | Oct 21, 2025 | Certain vehicles listed above, may have a condition that could cause the engine coolant thermostat to open at a lower temperature than inten… |
| N252503850 | Warranty extension | Jun 10, 2025 | Special Coverage. Certain vehicles listed above may have a condition that could cause the mounting bracket on the front exhaust pipe to sep… |
| 00-06-01-026R | Service bulletin | Jun 5, 2025 | This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. |
| 25-NA-132 | Service bulletin | May 17, 2025 | This bulletin provides a procedure to verify a noise and replace the oil pump shaft assembly if the gears of the pump and balance shaft are… |
| 24-NA-201 | Service bulletin | May 16, 2025 | This bulletin provides a procedure to replace the oil pump due to a loose drive pump gear not pressed on the pump shaft. |
| 23-NA-153 | Service bulletin | May 15, 2025 | The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is… |
| 25-NA-113 | Service bulletin | May 9, 2025 | This bulletin provides a procedure to locate and repair a possible cooler galley plug if found the cause of the customers concern of an oil… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, GMC and Buick, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM N252540910 a recall?
No. A service campaign is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the N252540910 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does N252540910 cover?
The manufacturer filed it against 3 model years across 3 brands (Chevrolet, GMC and Buick): 2026 Buick Enclave, 2026 Chevrolet Traverse, 2026 GMC Acadia. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.