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 | 11035429 |
| Published by NHTSA | 2026-08-01 |
| Manufacturer's number | 662.20 |
| Manufacturer's date | 2026-07-16 |
| Campaign id or software version | 662.20 |
| NHTSA component | UNKNOWN OR OTHER |
| Manufacturer's system | AOS, BCM, ELM, FCM, ICS, ICCM, PDR, TCM, TPIM, WCM: AOS (Automatic Occupant Sensing Module), BCM (Body Control Module), ELM (Exterior Lighting Module), FCM (Front Camera Module), ICS_Info (Integrated Center Stack), ICCM (Integrated Chassis Control Module), PDR (Performance Data Recorder), TCM (Transmission Control Module), TPIM (Traction Power Inverter Module), WCM (Wireless Charger Module) |
NHTSA's summary
• Fixes to help ensure successful vehicle software updates. • Improves how center display adjusts to lighting changes. • Improved warnings when a key is missing. • Better tuning for interior lighting in Stealth mode. Improvements to automatic low beam headlamp logic. • Smoother dimming and transitions from day to night. • Improvements to provide more accurate speed limit detection on the driver’s display. • Improvements to the availability of driver assistance features and fewer notifications or warnings. • Fixes to help ensure driver assistance features remain functional when the windshield freezes. • Fixes to help prevent loss of Performance Data Recorder functionality and to protect battery health. • The Transmission Fluid Life gauge will reset properly and show a more accurate reading. • The eAWD indicator will activate less frequently during normal driving conditions. • Fixes a known iPhone 15 charging issue that affects some devices
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 | 2024 |
|---|---|
| CHEVROLET CORVETTE E-RAY | 2024 (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.