Chevrolet bulletin 21-NA-161
What it saysThis service bulletin provides repair procedure information to correct a customer concern of a Check Engine Lamp (CEL) Illuminated on Driver Information Center (DIC) with DTCs P12E9, P12EA, P12EF, P12F0, P12F6, P12F7… NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Nov 17, 2023, received Nov 29, 2023, about the engine. It names 6 model years (2019–2024). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis service bulletin provides repair procedure information to correct a customer concern of a Check Engine Lamp (CEL) Illuminated on Driver Information Center (DIC) with DTCs P12E9, P12EA, P12EF, P12F0, P12F6, P12F7, P12FC, P12FD Set.
Trouble codes it names: P12E9 P12EA P12EF P12F0 P12F6 P12F7 P12FC P12FD
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-NA-161 | Service bulletin | Nov 17, 2023 | 10245561 | PDF, 496 KB |
What the document itself lists
The manufacturer titles it “Check Engine Lamp (CEL) Illuminated on Driver Information Center (DIC), DTCs P12E9,”.
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 84897442 | — | 1 |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Chevrolet’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 themA 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 6 model years this bulletin names have filed 139 complaints with NHTSA since 2015. 50 of them name Engine, Electrical System — 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 trunk will not open. It will not open even using the keyfob, using the actual key, nor pressing the button on the driver side door. There is a constant message saying that the trunk is not secured and the car is constantly alarming because of the trunk. Unable to open the convertible top. Message says to open top manually.
2020 Chevrolet Camaro · Electrical System · filed with NHTSA Jun 26, 2024 · ODI 11596934
I am writing to report a serious safety issue I experienced with my Chevrolet Camaro, which I believe may be related to a broader mechanical defect affecting General Motors vehicles. Approximately two weeks ago, while driving on the highway, an “ESC” (Electronic Stability Control) warning suddenly appeared on my dashboard.
2024 Chevrolet Camaro · Engine · filed with NHTSA May 13, 2025 · ODI 11660777
The contact owns a 2019 Chevrolet Camaro. The contact stated while driving 65 MPH, the instrument panel failed to display the speed, RPM, engine temperature, or any other vehicle information. The vehicle was taken to an independent mechanic, who diagnosed a failure with the instrument cluster. The vehicle was not repaired.
2019 Chevrolet Camaro · Electrical System · filed with NHTSA May 7, 2025 · ODI 11659616
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 group47 other manufacturer communications filed against the Chevrolet Camaro 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 |
|---|---|---|---|
| 22-NA-080 | Service bulletin | Sep 6, 2025 | This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. |
| 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. |
| 23-NA-170 | Service bulletin | May 16, 2025 | This bulletin advises the tech to inspect deeper into what may be the main cause of an engine failure. |
| 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… |
| 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-100 | Service bulletin | Apr 18, 2025 | This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and regist… |
| 25-NA-052 | Service bulletin | Mar 25, 2025 | This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the… |
| PIP5824D | Service bulletin | Feb 25, 2025 | This Preliminary information communicates a possible issue with the active fuel management rockers causing a misfire and the correction for… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet 21-NA-161 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 21-NA-161 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 21-NA-161 cover?
The manufacturer filed it against 6 model years: 2024 Chevrolet Camaro, 2023 Chevrolet Camaro, 2022 Chevrolet Camaro, 2021 Chevrolet Camaro, 2020 Chevrolet Camaro, 2019 Chevrolet Camaro. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.