GM bulletin N232415060-01
What it saysCertain vehicles may have a condition in which the engine block was produced with cracks. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Apr 9, 2024, about the engine. It names 3 model years across Chevrolet and GMC (2023). 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.
Get the next GM 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.
Customer Satisfaction Program - Certain vehicles may have a condition in which the engine block was produced with cracks. Dealers are to replace the engine.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N232415060-01 | Service bulletin | Apr 9, 2024 | 10252980 | PDF, 190 KB |
What the document itself lists
The manufacturer titles it “REVISION: N232415060-01 – Customer Satisfaction Program”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 12732264 | L3B – 2.7L Turbo 4 Cylinder Engine | — | eBay Motors → |
| 13579648 | Air Conditioning Compressor and Condenser Hose Seal | — | eBay Motors → |
| 13579646 | Air Conditioning Compressor and Condenser Hose Seal | — | eBay Motors → |
| 13579649 | Air Conditioning Compressor and Condenser Hose Seal | — | eBay Motors → |
| 12701564 | Catalytic Converter Clamp | — | eBay Motors → |
| 12687885 | Catalytic Converter Gasket | — | eBay Motors → |
| 12667009 | Crankcase Vent Passage Seal | — | eBay Motors → |
| 12666026 | Engine Coolant Flow Control Valve Seal | — | eBay Motors → |
| 11548893 | Engine Mount Engine Side Bolt | — | eBay Motors → |
| 12665976 | Exhaust Manifold Outlet Pipe Gasket | — | eBay Motors → |
| 84407373 | Exhaust System Front Gasket | — | eBay Motors → |
| 12663312 | Fuel Feed Intermediate Pipe | — | eBay Motors → |
| 12693603 | Fuel Injector Nozzle Housing Seal Kit | — | eBay Motors → |
| 12645181 | Fuel Pump Housing Seal | — | eBay Motors → |
| 12663540 | Intake Manifold Gasket | — | eBay Motors → |
| 12670252 | Oil Level Indicator Tube Seal | — | eBay Motors → |
| 12693534 | Positive Crankcase Ventilation Tube | — | eBay Motors → |
| 11549150 | Turbocharger Bolt | — | eBay Motors → |
| 12667635 | Turbocharger Coolant Feed and Return Pipe Gasket | — | eBay Motors → |
| 12687166 | Turbocharger Gasket | — | eBay Motors → |
| 11612078 | Turbocharger Nut | — | eBay Motors → |
| 12663529 | Turbocharger Oil Feed Pipe Gasket | — | eBay Motors → |
| 12696999 | Turbocharger Oil Return Pipe Gasket | — | eBay Motors → |
| 12663528 | Turbocharger Oil Return Pipe Gasket | — | eBay Motors → |
| 11602757 | Turbocharger Stud | — | eBay Motors → |
| 12665975 | Water Pump Inlet Gasket | — | eBay Motors → |
| 12668035 | Water Pump Outlet Port Seal | — | eBay Motors → |
| 13418808 | — | — | |
| 13418809 | — | — | |
| 11547742 | — | — | |
| 85628205 | Transmission Fluid Cooler Seal | — | eBay Motors → |
| 11549180 | Engine Mount Frame Side Bolt | — | eBay Motors → |
| 13418807 | — | — | |
| 19432351 | — | — | |
| 19432446 | — | — | |
| 12346290 | — | — | |
| 10953464 | Customer Satisfaction Program | — | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9107114 | Replace the Engine Silverado/Sierra Colorado | 18.3 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 2 model years
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.
Email me new GM bulletins for one of these models
A weekly email, sent only in a week when GM 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 3 model years this bulletin names have filed 1,039 complaints with NHTSA since 2015. 438 of them name Engine — 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 2023 Chevrolet Silverado, the 30 owners who gave an odometer reading for Engine reported it at a median of 40,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
2 incidents. 1. The blind spot indication (driver side) gives false readings sometimes. Will light up at various times in clear weather with no vehicle next to me. Sensors checked and were clean. 2. The vehicle had a dead battery. It was jumped by roadside assistance. When started, the vehicle had a check engine light.
2023 Chevrolet Colorado · Engine · filed with NHTSA Oct 14, 2023 · ODI 11549904
Vehicle continues to go into limp mode causing us to be stranded on the side of the road. It is related to DEF injection system issues. It sounds like this is a known issue with the software. We purchased the vehicle in August and have been unable to use the truck since purchasing as it continues to leave us stranded.
2023 Chevrolet Silverado · Engine · filed with NHTSA Jun 6, 2024 · ODI 11592815
In depth: 2023 Chevrolet Silverado engine problems → · 2023 GMC Sierra 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 engine
Source: same model, same component group178 other manufacturer communications filed against these GM models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N262576260 | Service campaign | Oct 15, 2026 | General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust le… |
| N262568830 | Service campaign | Aug 4, 2026 | Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten th… |
| N262546590-01 | Service campaign | Jul 15, 2026 | Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This sp… |
| N262548050 | Service campaign | Apr 24, 2026 | Certain vehicles, may have a condition that could cause the Catalytic Converter to fail. If this failure occurs, the Malfunction Indicator L… |
| N252494003-02 | Service campaign | Jan 21, 2026 | Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have… |
| 25-NA-339 | Service bulletin | Nov 6, 2025 | Under Field Actions N252494000, N252494001, the service procedure includes performing a PICO test on vehicle engines within the identified s… |
| N252508341 | Service campaign | Sep 16, 2025 | Certain vehicles listed above, may have a condition that could cause the engine coolant control valve to fail an onboard vehicle diagnostic… |
| N252508340 | Service campaign | Sep 16, 2025 | Certain vehicles may have a condition that could cause the engine coolant control valve to fail. If this condition were to occur, the Malfun… |
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 N232415060-01 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 N232415060-01 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 N232415060-01 cover?
The manufacturer filed it against 3 model years across 2 brands (Chevrolet and GMC): 2023 Chevrolet Colorado, 2023 Chevrolet Silverado, 2023 GMC Sierra. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.