GM bulletin 23-NA-151
What it saysThis service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated May 16, 2025, received Oct 6, 2023, about the electrical system — 11 documents under this number. It names 23 model years across Chevrolet, GMC and Cadillac (2022–2026). 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 · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
Trouble codes it names: P0AA6 P0AA7 P0AE3 P0C78 P1C34 U1666 U1667 U2BFC U359E all 9 read from the document itself; NHTSA’s summary names none
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23-NA-151 | Service bulletin | May 16, 2025 | 11023484 | PDF, 735 KB |
| 23-NA-151 | Service bulletin | Apr 9, 2025 | 11017886 | PDF, 702 KB |
| 23-NA-151 | Service bulletin | Dec 11, 2024 | 11012693 | PDF, 718 KB |
| 23-NA-151 | Service bulletin | Nov 20, 2024 | 11011944 | PDF, 716 KB |
| 23-NA-151 | Service bulletin | Aug 14, 2024 | 11008903 | PDF, 2,507 KB |
| 23-NA-151 | Service bulletin | Jun 5, 2024 | 11002022 | PDF, 503 KB |
| 23-NA-151 | Service bulletin | May 24, 2024 | 11001774 | PDF, 502 KB |
| 23-NA-151 | Service bulletin | Mar 14, 2024 | 10251908 | PDF, 179 KB |
| 23-NA-151 | Service bulletin | Jan 16, 2024 | 10249773 | PDF, 185 KB |
| 23-NA-151 | Service bulletin | Oct 19, 2023 | 10245234 | PDF, 24 KB |
| 23-NA-151 | Service bulletin | Sep 5, 2023 | 10243714 | PDF, 496 KB |
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 8 model years
Also filed against model years this site has no page for: 2025 Chevrolet Brightdrop 400; 2025 Chevrolet Brightdrop 600.
GMC 6 model years
Also filed against model years this site has no page for: 2022 GMC Hummer EV Pickup.
Cadillac 9 model years
Also filed against model years this site has no page for: 2024 Cadillac Redundant Lyriq.
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 19 model years this bulletin names have filed 1,972 complaints with NHTSA since 2015. 484 of them name Electrical System, 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.
The entire left portion of the screen became inoperable and remained a black screen despite attempts to reset the system. The left side of the screen contains information such as gear selection, speedometer, lane keep assist, and many other important information. There is no other way to see what speed you are going besides this screen.
2023 Cadillac Lyriq · Electrical System · filed with NHTSA Dec 11, 2024
Vehicle displayed a 'Lithium Ion Battery – Schedule Service Now' warning within approximately one month of delivery. Dealership service records later obtained by our attorney show the identical diagnostic condition was already present and was cleared via a system reset on the date of delivery, October 23, 2025, without disclosure to us.
2026 Cadillac Vistiq · Electrical System · filed with NHTSA Aug 27, 2026
On February 4, 2026, my wife drove to the bank, a trip of about 10 to 15 minutes, and turned off the car at the ATM. When she tried to leave, the vehicle wouldn't start. After a while, she opened and closed the door and locked and unlocked the car twice with the remote control, and the vehicle started and she was able to drive, but all…
2024 Chevrolet Blazer · Electrical System · filed with NHTSA Feb 5, 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 electrical system
Source: same model, same component group455 other manufacturer communications filed against these GM models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N242468490-02 | Service campaign | May 28, 2026 | Certain vehicles may have missing cavity plugs from the rear chassis harness electrical connector. Dealers are to inspect the rear chassis h… |
| N252529080 | Service campaign | Apr 1, 2026 | Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dea… |
| N252515590 | Service campaign | Jan 27, 2026 | Certain vehicles listed above, may have a condition in which the body-to-chassis ground strap may be corroded. Dealers will replace the grou… |
| 24-NA-166 | Service bulletin | Nov 7, 2025 | This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Senso… |
| 24-NA-227 | Service bulletin | Nov 4, 2025 | This technical bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM. |
| 18-NA-180 | Service bulletin | Sep 4, 2025 | This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information. |
| 25-NA-021 | Service bulletin | Jun 7, 2025 | This technical bulletin provides repair information to correct a customer concern of Radio Software Update W23E-178.1.2-M174-SQBR6-93.3. |
| PIE0829A | Service bulletin | Jun 5, 2025 | This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the liftgate not ope… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, GMC and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 23-NA-151 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 23-NA-151 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 23-NA-151 cover?
The manufacturer filed it against 23 model years across 3 brands (Chevrolet, GMC and Cadillac): 2025 Cadillac Celestiq, 2026 Cadillac Escalade, 2025 Cadillac Escalade, 2025 Cadillac Lyriq, 2024 Cadillac Lyriq, 2023 Cadillac Lyriq and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.