GM over-the-air update CABIN & DRIVING 2026.3
What it saysFixes to help ensure start reliability and prevent battery drain Improved charging performance and messages Enhanced charge-port power-door operation Improved cabin-heating reliability Updates to Lane Centering… NHTSA’s full summary ↓
GM filed this with NHTSA as an over-the-air update dated Oct 26, 2026, received Nov 1, 2026 — 7 documents under this number: Cabin & Driving 2026.3 (7 filings). It names 13 model years across Chevrolet, GMC, Buick and Cadillac (2025–2027). 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 · Buick · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication• Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages • Enhanced charge-port power-door operation • Improved cabin-heating reliability • Updates to Lane Centering Assistance alerts • Improvements to steering system performance • Better vehicle software update reliability • Improved Service Leveling System messaging in the driver display • Updates to Rear Auto Brake and Park Assist availability messages
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Cabin & Driving 2026.3 | Over-the-air update | Oct 26, 2026 | 11038915 | PDF, 203 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 26, 2026 | 11038913 | PDF, 203 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 26, 2026 | 11038912 | PDF, 204 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 26, 2026 | 11038910 | PDF, 203 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 23, 2026 | 11038966 | PDF, 196 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 22, 2026 | 11038833 | PDF, 201 KB |
| Cabin & Driving 2026.3 | Over-the-air update | Oct 15, 2026 | 11038840 | PDF, 197 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 3 model years
GMC 2 model years
Buick 1 model year
Cadillac 7 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 13 model years this bulletin names have filed 146 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 CABIN & DRIVING 2026.3 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 CABIN & DRIVING 2026.3 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 CABIN & DRIVING 2026.3 cover?
The manufacturer filed it against 13 model years across 4 brands (Chevrolet, GMC, Buick and Cadillac): 2026 Buick Enclave, 2027 Cadillac Escalade, 2026 Cadillac Escalade, 2027 Cadillac Optiq, 2026 Cadillac Optiq, 2025 Cadillac Optiq and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.