GM bulletin N242438850
What it saysGeneral Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles equipped with a 3.6L engine. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Apr 11, 2024, about the fuel/propulsion system. It names 3 model years across Chevrolet and Cadillac (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 · Cadillac.
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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 involving certain vehicles equipped with a 3.6L engine. The joint that connects the high-pressure fuel pumpâs outlet pipe to the pump may not have been welded within specified tolerances during the pump supplierâs manufacturing process. There is a potential that this weld joint is outside the tolerances that have been validated for the long-term durability of this pipe connection. Dealers are to replace the high-pressure fuel pump
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N242438850 | Service bulletin | Apr 11, 2024 | 10253045 | PDF, 115 KB |
What the document itself lists
The manufacturer titles it “N242438850 - Emission Recall”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 12691088 | High Pressure Fuel Pump | — | eBay Motors → |
| 12695903 | Fuel Feed Intermediate Pipe | — | eBay Motors → |
| 12647308 | Heater Outlet Pipe Gasket | — | eBay Motors → |
| 12346290 | — | — | |
| 10953464 | — | — | |
| 12687733 | — | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9107319 | High Pressure Fuel Pump Replacement XT5 XT6 Blazer | 1 hrs |
Read by machine from the document NHTSA serves (5 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.
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.
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
Cadillac 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 3 model years this bulletin names have filed 157 complaints with NHTSA since 2015.
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 fuel/propulsion system
Source: same model, same component group25 other manufacturer communications filed against these GM models under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N262558690-02 | Service campaign | Sep 23, 2026 | General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power… |
| N262558690 | Service campaign | Sep 16, 2026 | General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power… |
| N262558690-01 | Service campaign | Sep 1, 2026 | Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition whic… |
| N252516900-01 | Emissions | Feb 19, 2026 | Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition whi… |
| N252516900 | Emissions | Feb 5, 2026 | Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition whi… |
| PIE0836 | Service bulletin | May 9, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 24-NA-139 | Service bulletin | Apr 12, 2025 | This bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Loss of Power, Fue… |
| PIE0753H | Service bulletin | Feb 27, 2025 | This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in… |
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 Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM N242438850 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 N242438850 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 N242438850 cover?
The manufacturer filed it against 3 model years across 2 brands (Chevrolet and Cadillac): 2024 Cadillac XT5, 2024 Cadillac XT6, 2024 Chevrolet Blazer. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.