Chevrolet bulletin 24-NA-154
What it saysThis informational bulletin provides information for during regular tire rotation service, visually inspect the condition of front and rear (both right hand and left hand) brake rotor splash shields. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Aug 13, 2024, received Sep 17, 2024, about the service brakes. It names 1 model year (2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis informational bulletin provides information for during regular tire rotation service, visually inspect the condition of front and rear (both right hand and left hand) brake rotor splash shields.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-154 | Service bulletin | Aug 13, 2024 | 11007834 | PDF, 120 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 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 132 complaints with NHTSA since 2015. 30 of them name Service Brakes — 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.
Chevy of Wasilla, AK did not properly inspect a safety recall for the rear parking brake harness. After I showed the dealership the pictures of the holes in the brake harness, I was told that the holes in the brake harness is a feature to let water out.
2024 Chevrolet Blazer · Service Brakes · filed with NHTSA Jan 13, 2026 · ODI 11710800
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 service brakes
Source: same model, same component group8 other manufacturer communications filed against the Chevrolet Blazer under the same component group (service brakes), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252521980-01 | Service campaign | Oct 31, 2025 | Certain vehicles listed above, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are… |
| N252521980 | Service campaign | Oct 22, 2025 | Certain vehicles, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are to reprogram… |
| N252519910 | Service campaign | Aug 27, 2025 | Certain vehicles may have a condition in which the Front Right Brake Line Fitting is torqued under specification. Dealers are to tighten the… |
| 24-NA-048 | Service bulletin | Feb 6, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 21-NA-142 | Service bulletin | Jan 9, 2025 | This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting ove… |
| 24-NA-157 | Service bulletin | Aug 16, 2024 | This informational bulletin provides information for new brake pads must be burnished before pursuit or other high-speed driving. |
| N242448390 | Service campaign | Aug 7, 2024 | Customer Satisfaction Program - certain vehicles may have a condition of a potential crack in the anchor bracket. Dealers are to replace bo… |
| PIP5596A | Service bulletin | Mar 4, 2024 | This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstall… |
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 24-NA-154 a recall?
No. A service bulletin 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 24-NA-154 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does 24-NA-154 cover?
The manufacturer filed it against 1 model year: 2024 Chevrolet Blazer. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.