GM bulletin 24-NA-274
What it saysThis bulletin provides a procedure to test and, if necessary, replace right side half shaft if found the cause of the customers concern of minor vehicle shudder or vibration under moderate to wide open throttle… NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Jan 7, 2025, received Jan 24, 2025, about the power train. It names 2 model years across Chevrolet and GMC (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.
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 bulletin provides a procedure to test and, if necessary, replace right side half shaft if found the cause of the customers concern of minor vehicle shudder or vibration under moderate to wide open throttle acceleration.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-274 | Service bulletin | Jan 7, 2025 | 11013094 | PDF, 127 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 85738622 | WHL DRV HALF | 1 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 3086048 | Half Shaft Break-In Procedure | 0.3 hrs |
Read by machine from the document NHTSA serves (2 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.
Model years it names
Source: as the manufacturer filed themChevrolet 1 model year
GMC 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 2 model years this bulletin names have filed 198 complaints with NHTSA since 2015. 68 of them name Engine, Power Train — 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.
While 2 hours from home driving down the interstate with a full vehicle, the vehicle alarmed and the screen notified "No Oil Pressure, Turn Car Off Now". I pulled over immediately and we had to sit on the edge of the interstate for 45 minutes - a safety hazard for us and the surrounding traffic.
2024 GMC Acadia · Engine · filed with NHTSA Aug 12, 2025
The contact owns a 2024 Chevrolet Traverse. The contact stated while driving at various speeds, the check engine warning light illuminated on the instrument panel. The vehicle was taken to several dealers and the contact was informed that the issue was related to the OnStar feature.
2024 Chevrolet Traverse · Power Train · filed with NHTSA Dec 6, 2024
I was driving in the rain and drove through a puddle something I have done many times with previous vehicles. All of a sudden the car stopped accelerating. I would press the gas,the engine would rev, but the car would barely move if at all. I barely made it to a safe location
2024 Chevrolet Traverse · Engine · filed with NHTSA Oct 4, 2024
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 power train
Source: same model, same component group50 other manufacturer communications filed against these GM models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-001 | Service bulletin | Mar 13, 2025 | This service bulletin provides repair information to correct a customer concern of a transmission fluid leak. |
| 24-NA-232 | Service bulletin | Mar 7, 2025 | This technical bulletin provides repair information to correct a customer concern of Metallic Noise from Rear Differential on Acceleration. |
| 16-NA-019 | Service bulletin | Feb 12, 2025 | This informational buleltin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flare… |
| 09-06-04-026Z | Service bulletin | Jan 9, 2025 | This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2. |
| PIP6034 | Service bulletin | Dec 19, 2024 | This Preliminary information communicates the possibility of one or more of the following dtc's P2148, P2151, P2154, P2157 to be set as curr… |
| N242473580 | Service campaign | Dec 9, 2024 | Certain vehicles listed above, may have a condition in which the transmission turbine shaft seal was misassembled. Dealers will replace the… |
| PIP6005A | Service bulletin | Dec 7, 2024 | This Preliminary information communicates possible transmission turbine shaft seal damaged causing code P2817. |
| PIP5974E | Service bulletin | Dec 5, 2024 | This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747. |
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-274 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-274 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-274 cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Traverse, 2024 GMC Acadia. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.