GMC bulletin N232427100-01
What it saysGeneral Motors has decided to conduct a Voluntary Emission Recall on certain vehicles with a 6.6L diesel engine. NHTSA’s full summary ↓
GMC filed this with NHTSA as a service bulletin dated Apr 4, 2024, about the structure. It names 2 model years (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.
Get the next GMC bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
What it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Emission Recall - General Motors has decided to conduct a Voluntary Emission Recall on certain vehicles with a 6.6L diesel engine. These vehicles may have been built with an incorrect hood vent that does not allow sufficient airflow. Dealers are to inspect the hood vent and replace if the correct part was not installed.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N232427100-01 | Service bulletin | Apr 4, 2024 | 10252724 | PDF, 228 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.
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 hood for the 2024 Sierra 2500HD →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 themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new GMC bulletins for one of these models
A weekly email, sent only in a week when GMC files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 160 complaints with NHTSA since 2015.
The Vader Chrome on the front of vehicle is peeling. This includes the grille and surrounding areas. This area has been inspected by a representative at GMC and at a dealership. GMC refuses to stand by their product
2024 GMC Sierra 3500HD · Structure · filed with NHTSA Mar 18, 2025 · ODI 11648923
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 structure
Source: same model, same component group24 other manufacturer communications filed against these GMC models under the same component group (structure), newest first. The eight newest are listed; the rest are on the GMC list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-114 | Service bulletin | May 8, 2025 | This informational bulletin provides information on Anti-Chip Coating Appearance. |
| 23-NA-097 | Service bulletin | Apr 23, 2025 | This service bulletin provides a procedure to correct a customer concern of Upper Glove Box Door does not Open when the Button is Depressed… |
| 19-NA-255 | Service bulletin | Mar 11, 2025 | This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peel… |
| PIE0818 | Service bulletin | Feb 22, 2025 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer lis… |
| 05-08-51-001L | Service bulletin | Feb 20, 2025 | This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film. |
| 22-NA-068 | Service bulletin | Feb 19, 2025 | This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted… |
| 20-NA-175 | Service bulletin | Feb 1, 2025 | This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on dri… |
| 22-NA-244 | Warranty extension | Jan 30, 2025 | This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warr… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for GMC, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GMC N232427100-01 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 N232427100-01 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 N232427100-01 cover?
The manufacturer filed it against 2 model years: 2024 GMC Sierra 2500HD, 2024 GMC Sierra 3500HD. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.