Chevrolet bulletin 24-NA-160
What it saysThis service bulletin provides a procedure to purge the air out of the Hybrid/Electric Vehicle Battery Coolant system to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0A7B and/or… NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Aug 15, 2024, received Sep 19, 2024, about the fuel/propulsion system. It names 1 model year (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 a procedure to purge the air out of the Hybrid/Electric Vehicle Battery Coolant system to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0A7B and/or P0E3C Set.
Trouble codes it names: P0A7B P0E3C
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-NA-160 | Service bulletin | Aug 15, 2024 | 11007912 | PDF, 143 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 5086028 | Purge Entrapped Air from Battery Cooling System | 1 hrs |
Read by machine from the document NHTSA serves (3 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 1 model year this bulletin names have filed 21 complaints with NHTSA since 2015. 6 of them name Fuel/Propulsion 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.
I live in Las Vegas, NV where temperatures outdoors frequently exceed 100 degrees F in the summer, and in properly permitted garages without air conditioning, it gets very hot. I own a 2024 Chevrolet Corvette Z06.
2024 Chevrolet Corvette · Fuel/Propulsion System · filed with NHTSA Jun 18, 2026
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 group10 other manufacturer communications filed against the Chevrolet Corvette 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 |
|---|---|---|---|
| PIT5985G | Service bulletin | Dec 14, 2024 | This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2… |
| PIP5969A | Service bulletin | Aug 14, 2024 | This Preliminary information communicates diagnostic information to the field on the restriction process on ordering the 2024 Corvette E-Ray… |
| 05-06-04-022V | Service bulletin | Aug 7, 2024 | This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are… |
| 20-NA-038 | Service bulletin | Jul 23, 2024 | This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence. |
| 04-06-04-051I | Service bulletin | Jun 29, 2024 | This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive. |
| 19-NA-044 | Service bulletin | Feb 7, 2024 | This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel ec… |
| N212350930 | Service bulletin | Feb 6, 2024 | Service Update. Certain vehicles may incorrectly report to test tools an active permanent status of Transmission Control Module (TCM) Diagn… |
| PIP5395H | Service bulletin | Jan 24, 2024 | This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have rattl… |
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 24-NA-160 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 24-NA-160 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.
Which vehicles does 24-NA-160 cover?
The manufacturer filed it against 1 model year: 2024 Chevrolet Corvette. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.