GM service campaign N262547330
What it saysCertain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state. NHTSA’s full summary ↓
GM filed this with NHTSA as a service campaign dated May 27, 2026, received Apr 17, 2026 — 2 documents under this number. It names 34 model years across Chevrolet, GMC, Buick and Cadillac (2024–2026). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC · Buick · Cadillac.
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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 in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N262547330 | Service campaign | May 27, 2026 | 11032936 | PDF, 636 KB |
| N262547330 | Service campaign | Apr 16, 2026 | 11031366 | PDF, 625 KB |
What the document itself lists
The manufacturer titles it “REVISION: N262547330-01 – Service Update”.
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9108470 | Check/Verify/Perform Over the Air (OTA) Programming | 0.2 hrs |
| 9108104 | Verified Module Software or Calibration Level: Module Is Programmed with Same Level… | 0.2 hrs |
| 9108105 | Communication Interface Telematics Module Reprogramming with SPS (Includes SDAC) | 0.8 hrs |
| 9108378 | Replace Communication Interface Telematics Module (Includes additional programming)… | 1 hrs |
Read by machine from the document NHTSA serves (6 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.
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 15 model years
Also filed against model years this site has no page for: 2025 Chevrolet Brightdrop 400; 2026 Chevrolet Brightdrop 400; 2025 Chevrolet Brightdrop 600; 2026 Chevrolet Brightdrop 600.
GMC 6 model years
Buick 2 model years
Cadillac 11 model years
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 30 model years this bulletin names have filed 2,025 complaints with NHTSA since 2015.
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.
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, Buick and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM N262547330 a recall?
No. A service campaign 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 N262547330 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does N262547330 cover?
The manufacturer filed it against 34 model years across 4 brands (Chevrolet, GMC, Buick and Cadillac): 2026 Buick Enclave, 2025 Buick Enclave, 2026 Cadillac CT5, 2025 Cadillac CT5, 2025 Cadillac Celestiq, 2026 Cadillac Lyriq and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.