Over-the-air update 662.20
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Over-the-air update |
|---|---|
| NHTSA id | 11034073 |
| Published by NHTSA | 2026-06-26 |
| Manufacturer's number | 662.20 |
| Manufacturer's date | 2026-06-19 |
| Campaign id or software version | 662.20 |
| NHTSA component | UNKNOWN OR OTHER |
| Manufacturer's system | AMP, AOS, BCM, EBCM, ECM, TCM, TPIM: AMP (Amplifier), AOS (Automatic Occupant Sensing Module), BCM (Body Control Module), EBCM (Electronic Brake Control Module), ECM (Engine Control Module), TCM (Transmission Control Module), TPIM (Traction Power Inverter Module) |
NHTSA's summary
• Improvements to audio quality when using Google Assistant. • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating. • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes. • Improves traction and stability control when accelerating or on uneven terrain. • Improves braking and stopping performance on low-traction surfaces. • Improves the performance of assisted braking features. • Improvements to emissions testing data • Improvements to shifting performance and fewer check engine light activations. • Improvements to eAWD indicator behavior • Improved starting reliability when your vehicle was turned off without being shifted to Park
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
| CHEVROLET CORVETTE CONVERTIBLE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| CHEVROLET CORVETTE CONVERTIBLE E-RAY | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE COUPE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE COUPE E-RAY | 2026 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.