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June 19, 2026 Over-the-air update

• Improvements to audio quality when using Google Assistant

Chevrolet technical service bulletin 662.20 for 2026 Chevrolet Corvette Convertible, 2026 Chevrolet Corvette Convertible E-Ray and 2026 Chevrolet Corvette Coupe and others.

Bulletin number
662.20 (662.20)
Component
Unknown or other
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

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