Chevrolet bulletin 662.10
Chevrolet filed this with NHTSA as a over-the-air update dated Jul 23, 2026, received Apr 30, 2026, about the unknown or other — 13 documents under this number. It names 19 model years (2023–2027). A 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication• Fixes to help ensure proper functionality for heating and cooling features • Improvements to night mode lights for shifting gears • Fixes for Daytime Running Lamps turning on when set to Off • Fixes to help prevent erroneous missing key messages on driver display • Fixes for accuracy of low tire pressure alert • Fixes for speed threshold for pedestrian alerts • Improvements to start reliability and reduced check engine light activation • Improvements to turbo system diagnostics • Improvements to reliability when extending the running boards on your vehicle
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| 662.10 | Over-the-air update | Jul 23, 2026 | 11035345 |
| 662.10 | Over-the-air update | Jul 23, 2026 | 11035344 |
| 662.10 | Over-the-air update | Jul 16, 2026 | 11035431 |
| 662.10 | Over-the-air update | Jul 16, 2026 | 11035291 |
| 662.10 | Over-the-air update | Jul 14, 2026 | 11035454 |
| 662.10 | Over-the-air update | Jul 14, 2026 | 11035425 |
| 662.10 | Over-the-air update | Jul 13, 2026 | 11035407 |
| 662.10 | Over-the-air update | Jul 10, 2026 | 11035455 |
| 662.10 | Over-the-air update | Jun 24, 2026 | 11034051 |
| 662.10 | Over-the-air update | Jun 23, 2026 | 11034072 |
| 662.10 | Over-the-air update | Jun 19, 2026 | 11034075 |
| 662.10 | Over-the-air update | May 28, 2026 | 11033003 |
| 662.10 | Over-the-air update | Apr 17, 2026 | 11031779 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet 662.10 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 662.10 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 662.10 cover?
The manufacturer filed it against 19 model years: 2026 Chevrolet Blazer, 2025 Chevrolet Blazer, 2024 Chevrolet Blazer, 2027 Chevrolet Bolt, 2025 Chevrolet Colorado, 2024 Chevrolet Colorado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.