GM bulletin 21-NA-122
What it saysThis technical bulletin provides a procedure to replace the radiator brackets if found loose to correct a customer concern of excessive vibration in the steering wheel or seat or floor at idle or at low to moderate… NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Jan 29, 2024, received Apr 14, 2023, about the steering — 2 documents under this number. It names 10 model years across Chevrolet and GMC (2020–2024). 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 technical bulletin provides a procedure to replace the radiator brackets if found loose to correct a customer concern of excessive vibration in the steering wheel or seat or floor at idle or at low to moderate speeds.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-NA-122 | Service bulletin | Jan 29, 2024 | 10250274 | PDF, 71 KB |
| 21-NA-122 | Service bulletin | Mar 30, 2023 | 10234165 | PDF, 495 KB |
What the document itself lists
The manufacturer titles it “Vibration or Boom At 1300 RPM”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 84981710 | X BRACKET,RAD | 1 | eBay Motors → |
| 84981711 | — | 1 |
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 5 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 10 model years this bulletin names have filed 1,315 complaints with NHTSA since 2015. 296 of them name Engine, Steering — 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.
On the 2020 Chevrolet Equinox, the 27 owners who gave an odometer reading for Engine reported it at a median of 51,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
We bought a 2023 Chevy Equinox AWD specifically because it said it can be flat towed behind an RV. When towing it, we have noticed that when going around certain turns such as a cloverleaf on or off ramp, as you are in the turn, the tires start screeching loudly, you can smell burning rubber, and the RV feels like it's being tugged on by…
2023 Chevrolet Equinox · Steering · filed with NHTSA Oct 27, 2023 · ODI 11552322
Car would stall suddenly mid intersection or street. There is an active recall for a fuel pump module with no known date of resolution. Fuel Pump Module would not provide adequate gas to the engine. This happened twice to me as I was driving on April 4th 2023. After speaking to Chevy & Dealership, there is not yet a fix to this problem.
2021 Chevrolet Equinox · Engine · filed with NHTSA Apr 21, 2023 · ODI 11518293
Took dealer 3/26 for Sam issue Engine Power reduced after already cause me hit curb. Got it out 4/1/26 Now 4/5/26 it happened again same codes after they claimed they fixed it. Also keep having Emergency services come on a caused my dashboard out. My issues is car keeps stalling losing power. Same codes as week ago after dealer fix.
2023 GMC Terrain · Engine · filed with NHTSA Apr 6, 2026 · ODI 11729391
In depth: 2020 Chevrolet Equinox engine problems → · 2020 GMC Terrain engine problems →
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 steering
Source: same model, same component group8 other manufacturer communications filed against these GM models under the same component group (steering), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252531220 | Service campaign | Dec 16, 2025 | Certain vehicles may have a condition in which the Power Steering Control Module, located within Electric Dual Pinion Rack and Pinion Steeri… |
| 25-NA-116 | Service bulletin | May 10, 2025 | This service bulletin provides information and the condition correction on the "Service Steering Column Lock" message and/or those who are u… |
| PI0281L | Service bulletin | Apr 17, 2025 | This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody comp… |
| 13-02-32-001H | Service bulletin | Apr 11, 2025 | This service bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern… |
| 25-NA-065 | Service bulletin | Mar 21, 2025 | This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis. |
| 16-NA-109 | Service bulletin | Feb 18, 2025 | This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grea… |
| 24-NA-054 | Service bulletin | Mar 15, 2024 | This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start. |
| 15-00-89-004F | Service bulletin | Aug 7, 2023 | This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak… |
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 21-NA-122 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 21-NA-122 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 21-NA-122 cover?
The manufacturer filed it against 10 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Equinox, 2023 Chevrolet Equinox, 2022 Chevrolet Equinox, 2021 Chevrolet Equinox, 2020 Chevrolet Equinox, 2024 GMC Terrain and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.