GM bulletin PIT6154A
What it saysThis Preliminary information communicates a diagnostic tip for a customer complaint of a steering wheel oscillation wobble shimmy dither vibration issue and suggest to inspect the front hub extension for excessive… NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Aug 13, 2024, about the steering. 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 Preliminary information communicates a diagnostic tip for a customer complaint of a steering wheel oscillation wobble shimmy dither vibration issue and suggest to inspect the front hub extension for excessive runout.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6154A | Service bulletin | Aug 13, 2024 | 11006344 | PDF, 369 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 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 102 complaints with NHTSA since 2015. 5 of them name 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.
since new there is a violent vibration in the steering wheel and floor boards. steering wheel oscillates side to side at speed from 38mph to very bad at 65mph. Dealer has had it 5 times and still cant fix it. they state the front hub extensions are out of round and have tried 3 sets without any success.
2024 GMC Sierra 3500HD · Steering · filed with NHTSA Sep 22, 2024 · ODI 11615826
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 group16 other manufacturer communications filed against these GM models under the same component group (steering), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 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… |
| N242485780-01 | Service campaign | Jan 27, 2025 | Some vehicles may contain a power steering pump that may prematurely fail. Dealers will inspect and replace the power steering pump as nece… |
| N242485780 | Service campaign | Jan 22, 2025 | Some vehicles may contain a power steering pump that may prematurely fail. Dealers will inspect and replace the power steering pump as neces… |
| 24-NA-185 | Service bulletin | Sep 10, 2024 | This informational bulletin provides information on Steering Bump or Clunk Noise on Rough Roads or Potholes. |
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 PIT6154A 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 PIT6154A 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 PIT6154A cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Silverado 3500HD, 2024 GMC Sierra 3500HD. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.