GM service campaign A252528630-03
What it saysOn certain vehicles listed above, under certain driving conditions and due to differences in flow rate characteristics, the fuel injectors may not be able to properly optimize engine fueling. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated Feb 9, 2026, about the fuel/propulsion system. It names 4 model years across Chevrolet and Buick (2025–2026). 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 · 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. On certain vehicles listed above, under certain driving conditions and due to differences in flow rate characteristics, the fuel injectors may not be able to properly optimize engine fueling. Dealers will reprogram the engine control module.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A252528630-03 | Service campaign | Feb 9, 2026 | 11028657 | PDF, 324 KB |
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 2 model years
Buick 2 model years
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 4 model years this bulletin names have filed 160 complaints with NHTSA since 2015. 13 of them name Fuel/Propulsion System — 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.
Rough field delivery or air intake system, or software issue, heavy shuddering while at incline/decline, parked and reoccurring everyday. Also occurred while driving through windy hills (felt very unsafe to drive at this time). Yes this issue has been reproduced at the dealership and they are stating this is a “normal” problem.
2026 Chevrolet Trax · Fuel/Propulsion System · filed with NHTSA Sep 21, 2026 · ODI 11765903
FUEL RAIL SYSTEM - The check engine light came on after only three days/156 miles! OnStar was contacted and a diagnostic was run indicating "The Engine and Transmission System is not performing as expected.
2025 Chevrolet Trax · Fuel/Propulsion System · filed with NHTSA Feb 18, 2025 · ODI 11643559
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 fuel/propulsion system
Source: same model, same component group9 other manufacturer communications filed against these GM models under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| A252528630-02 | Service campaign | Jan 28, 2026 | Service Update. On certain vehicles listed above, under certain driving conditions and due to differences in flow rate characteristics, the… |
| A252528630-01 | Service campaign | Jan 7, 2026 | Service Update. On certain vehicles listed above, under certain driving conditions and due to differences in flow rate characteristics, the… |
| A252528630 | Service campaign | Dec 9, 2025 | Service Update. On certain vehicles listed above, under certain driving conditions and due to differences in flow rate characteristics, the… |
| 24-NA-139 | Service bulletin | Apr 12, 2025 | This bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Loss of Power, Fue… |
| PIE0810A | Service bulletin | Jan 11, 2025 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer lis… |
| PIP5929A | Service bulletin | Dec 16, 2024 | This Preliminary information communicates to the dealers diagnostic tips related to MIL on with P219A. |
| 05-06-04-022V | Service bulletin | Aug 7, 2024 | This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are… |
| 04-06-04-051I | Service bulletin | Jun 29, 2024 | This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet and Buick, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM A252528630-03 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 A252528630-03 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 A252528630-03 cover?
The manufacturer filed it against 4 model years across 2 brands (Chevrolet and Buick): 2026 Buick Envista, 2025 Buick Envista, 2026 Chevrolet Trax, 2025 Chevrolet Trax. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.