GM bulletin N232430470
What it saysCertain vehicles may have a condition that could cause the engineâs bank 2 exhaust camshaft position actuator valve solenoid to fail. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Jan 25, 2024, about the engine. It names 2 model years across Chevrolet and GMC (2020). 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Certain vehicles may have a condition that could cause the engineâs bank 2 exhaust camshaft position actuator valve solenoid to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Dealers are to replace the bank 2 exhaust camshaft position actuator valve solenoid as necessary. The repairs will be made at no charge to the customer.
Trouble codes it names: P0019 P0024 all 2 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N232430470 | Service bulletin | Jan 25, 2024 | 10249185 | PDF, 176 KB |
What the document itself lists
The manufacturer titles it “N232430470 - Special Coverage”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 12732244 | Exhaust Camshaft Position Actuator | — | eBay Motors → |
| 12652450 | Throttle Body Gasket | — | eBay Motors → |
| 12648665 | Intake Manifold Gasket | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9900880 | Bank 2 Exhaust Camshaft Actuator Replacement Add: Diagnosis Time | 3 hrs |
| 9900881 | Customer Reimbursement Approved - For USA and Canada dealers only - For Export… | 0.2 hrs |
| N232430470 | — | 20 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.
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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 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. 27 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.
The contact owns a 2020 Chevrolet Colorado. The contact stated while driving 65-75 MPH, the check engine warning light illuminated, and the vehicle was sluggish. The contact was able to continue driving. The vehicle was taken to an Auto Parts Store, where it was diagnosed that the camshaft had failed.
2020 Chevrolet Colorado · Engine · filed with NHTSA Feb 23, 2024 · ODI 11573663
When rolling to stop signs or red lights, the vehicle occasionally fails to downshift properly and will attempt to continue pushing the vehicle when trying to stop. On multiple occasions, the vehicle acts as if it cannot be stopped due to the transmission failing to downshift.
2020 GMC Canyon · Engine · filed with NHTSA Jan 5, 2022 · ODI 11446376
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 group65 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 |
|---|---|---|---|
| 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… |
| 00-06-01-026R | Service bulletin | Jun 5, 2025 | This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. |
| PIE0840 | Service bulletin | May 16, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 23-NA-153 | Service bulletin | May 15, 2025 | The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is… |
| 24-NA-170 | Service bulletin | May 14, 2025 | This service bulletin provides repair information to correct a customer concern of Check Engine Lamp Illuminated with HVAC Related DTC. |
| 15-NA-010 | Service bulletin | May 7, 2025 | This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California… |
| 25-NA-037 | Service bulletin | Apr 30, 2025 | This bulletin advises the tech that the Exhaust Roller Follower may be the issue with the engine Ticking noise, misfire or rough run and wh… |
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 N232430470 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 N232430470 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 N232430470 cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and GMC): 2020 Chevrolet Colorado, 2020 GMC Canyon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.