Chevrolet service campaign N252499670
What it saysCertain vehicles, equipped with a 1.4L engine, may have a condition that could cause the turbocharger to fail. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service campaign dated Oct 23, 2025, about the engine. It names 1 model year (2021). 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.
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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.
What it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Certain vehicles, equipped with a 1.4L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Additionally, the engine may run rough or have reduced power. Dealers are to replace the turbocharger as necessary. The repairs will be made at no charge to the customer.
Trouble codes it names: P0299 all 1 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N252499670 | Service campaign | Oct 23, 2025 | 11024423 | PDF, 377 KB |
What the document itself lists
The manufacturer titles it “N252499670 - Special Coverage”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 25201066 | Turbocharger Assembly | — |
| 12346290 | — | — |
| 10953464 | Exhaust Pipe Clamp 55565351 | 1 |
| 95020217 | Catalytic Converter Gasket | — |
| 11102751 | Catalytic Converter Nut | — |
| 11570514 | Right Side Engine Mount Bolt | — |
| 28290067 | Turbo Coolant Feed Pipe Assembly | — |
| 25198928 | Turbo Coolant Feed Pipe Seal | — |
| 28290068 | Turbo Oil Return Pipe Gasket | — |
| 28290069 | Turbo Oil Return Pipe Assembly | — |
| 25200945 | Turbo Oil Feed Pipe Seal | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9900939 | Customer Reimbursement Denied – For USA dealers only N/A ZREG ** For USA and Canada… | 20 hrs |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Chevrolet’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 themA 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 1 model year this bulletin names have filed 25 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 Turbo Charger failed suddenly without a prior display of a warning light and was replaced by an independent service center in June 2025. I received a letter from GM in November 2025 stating there was a known "condition" that may cause the Turbo Charger to need replacing but a recall was not issued.
2021 Chevrolet Trax · Engine · filed with NHTSA Feb 10, 2026 · ODI 11717127
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 group48 other manufacturer communications filed against the Chevrolet Trax 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 |
|---|---|---|---|
| 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. |
| 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… |
| 23-NA-122 | Service bulletin | May 9, 2025 | This service bulletin provides a procedure to fix an oil leak from a porous area at the cylinder head and how to fix it so that the engine d… |
| 15-NA-010 | Service bulletin | May 7, 2025 | This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California… |
| 25-NA-100 | Service bulletin | Apr 18, 2025 | This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and regist… |
| 20-NA-084 | Service bulletin | Apr 2, 2025 | This service bulletin provides information on normal engine characteristics/noise produced by the LIH or LBP engine. |
| 24-NA-021 | Service bulletin | Mar 28, 2025 | This service bulletin provides a procedure to test and replace, if needed, the pressure sensor and/or the oil pump if the codes noted set du… |
| 25-NA-052 | Service bulletin | Mar 25, 2025 | This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet N252499670 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 N252499670 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 N252499670 cover?
The manufacturer filed it against 1 model year: 2021 Chevrolet Trax. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.