GM bulletin 24-NA-227
What it saysThis technical bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Nov 4, 2025, received Dec 2, 2024, about the electrical system — 5 documents under this number. It names 4 model years across Chevrolet and GMC (2025–2026). 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.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis technical bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-227 | Service bulletin | Nov 4, 2025 | 11025996 | PDF, 373 KB |
| 24-NA-227 | Service bulletin | Oct 2, 2025 | 11025553 | PDF, 925 KB |
| 24-NA-227 | Service bulletin | Jan 16, 2025 | 11013262 | PDF, 835 KB |
| 24-NA-227 | Service bulletin | Oct 16, 2024 | 11011237 | PDF, 835 KB |
| 24-NA-227 | Service bulletin | Oct 16, 2024 | 11010876 | PDF, 835 KB |
What the document itself lists
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 3486228 | Diagnosis time for ANC microphone retention | 0.3 hrs |
| 2888008 | Radio Reprogramming with SPS for ANC | 0.3 hrs |
Read by machine from the document NHTSA serves (11 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. Listings and prices on eBay Motors are the seller’s.
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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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the body for the 2026 Equinox →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themChevrolet 2 model years
GMC 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 519 complaints with NHTSA since 2015. 116 of them name Electrical 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.
Incident Date: February 10, 2026 Mileage: 1,260 On the morning of February 10, 2026, my 2026 Chevrolet Equinox EV (1,260 miles) would not start. The instrument cluster simultaneously displayed three warning messages: 1)“Service Battery Fault — Vehicle Won’t Restart,” 2)“Charging is unavailable,” and 3)“Charge Vehicle Soon.” The vehicle…
2026 Chevrolet Equinox · Electrical System · filed with NHTSA Mar 28, 2026
On May 8,2025 the lift gate failed and crashed down on my head, vehicle is available for inspection and only a GM inspector has looked at it so far. The dealership told me because I filed a complaint with GM they can't touch it unless directed by GM now.
2025 Chevrolet Equinox · Structure · filed with NHTSA May 28, 2025
Center screen went black and is completely inoperational. Cannot utilize any center screen functions including headlights and rear backup camera. Took vehicle to dealer and they diagnosed as a bad display control unit, which is on backorder
2025 Chevrolet Equinox · Electrical System · filed with NHTSA Apr 22, 2025
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 electrical system
Source: same model, same component group107 other manufacturer communications filed against these GM models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 18-NA-180 | Service bulletin | Sep 4, 2025 | This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information. |
| 25-NA-021 | Service bulletin | Jun 7, 2025 | This technical bulletin provides repair information to correct a customer concern of Radio Software Update W23E-178.1.2-M174-SQBR6-93.3. |
| PIE0829A | Service bulletin | Jun 5, 2025 | This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the liftgate not ope… |
| 22-NA-083 | Service bulletin | May 17, 2025 | This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty. |
| 23-NA-151 | Service bulletin | May 16, 2025 | This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method. |
| PIE0753I | Service bulletin | May 15, 2025 | This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in… |
| 25-NA-044 | Service bulletin | May 14, 2025 | This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs. |
| 24-NA-202 | Service bulletin | May 14, 2025 | This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warran… |
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 GMC, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 24-NA-227 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-227 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.
Which vehicles does 24-NA-227 cover?
The manufacturer filed it against 4 model years across 2 brands (Chevrolet and GMC): 2026 Chevrolet Equinox, 2025 Chevrolet Equinox, 2026 GMC Terrain, 2025 GMC Terrain. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.