GM over-the-air update 661.30
What it saysImprovements to the performance of Bose AudioPilot to better counteract road and ambient noise. NHTSA’s full summary ↓
GM filed this with NHTSA as an over-the-air update dated Jun 24, 2026, received Apr 2, 2026 — 19 documents under this number. It names 29 model years across Chevrolet, GMC and Cadillac (2023–2027). An over-the-air update 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 · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication• Improvements to the performance of Bose AudioPilot to better counteract road and ambient noise. • Your towing experience is improving by preventing enablement of King Crab mode when a trailer is attached. • When towing a trailer, you will now experience less trailer sway. • This update will help prevent One-Pedal Driving from deactivating after you remote start your vehicle. • Fixes to help ensure proper functionality for Brake Assist. • Fixes to help ensure successful vehicle software updates. • Improvements to performance for under-hood storage opening • Fixes to help ensure the swing gate opens and closes properly. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 661.30 | Over-the-air update | Jun 24, 2026 | 11034074 | PDF, 198 KB |
| 661.30 | Over-the-air update | Jun 18, 2026 | 11034082 | PDF, 198 KB |
| 661.30 | Over-the-air update | Jun 8, 2026 | 11034049 | PDF, 194 KB |
| 661.30 | Over-the-air update | May 26, 2026 | 11032932 | PDF, 191 KB |
| 661.30 | Over-the-air update | May 26, 2026 | 11032931 | PDF, 192 KB |
| 661.30 | Over-the-air update | May 22, 2026 | 11032930 | PDF, 193 KB |
| 661.30 | Over-the-air update | May 13, 2026 | 11032929 | PDF, 194 KB |
| 661.30 | Over-the-air update | May 13, 2026 | 11032928 | PDF, 183 KB |
| 661.30 | Over-the-air update | May 13, 2026 | 11032926 | PDF, 196 KB |
| 661.30 | Over-the-air update | May 7, 2026 | 11032921 | PDF, 190 KB |
| 661.30 | Over-the-air update | Apr 28, 2026 | 11031815 | PDF, 198 KB |
| 661.30 | Over-the-air update | Apr 23, 2026 | 11031829 | PDF, 192 KB |
| 661.30 | Over-the-air update | Apr 21, 2026 | 11031924 | PDF, 188 KB |
| 661.30 | Over-the-air update | Apr 14, 2026 | 11031807 | PDF, 188 KB |
| 661.30 | Over-the-air update | Apr 1, 2026 | 11031766 | PDF, 204 KB |
| 661.30 | Over-the-air update | Mar 30, 2026 | 11031127 | PDF, 188 KB |
| 661.30 | Over-the-air update | Mar 21, 2026 | 11030542 | PDF, 196 KB |
| 661.30 | Over-the-air update | Mar 21, 2026 | 11030541 | PDF, 200 KB |
| 661.30 | Over-the-air update | Mar 21, 2026 | 11030540 | PDF, 200 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 14 model years
GMC 9 model years
Also filed against model years this site has no page for: 2026 GMC Hummer EV Pickup; 2026 GMC Hummer EV SUV.
Cadillac 6 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 27 model years this bulletin names have filed 3,419 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 and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 661.30 a recall?
No. A over-the-air update 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 661.30 repair free?
A over-the-air update 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 661.30 cover?
The manufacturer filed it against 29 model years across 3 brands (Chevrolet, GMC and Cadillac): 2025 Cadillac Celestiq, 2026 Cadillac Escalade, 2025 Cadillac Escalade, 2026 Cadillac Lyriq, 2026 Cadillac Optiq, 2026 Cadillac Vistiq and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.