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July 16, 2026 Over-the-air update

• Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving...

Chevrolet technical service bulletin 662.20 for 2027 Chevrolet Bolt EV.

Bulletin number
662.20 (662.20)
Component
Unknown or other
Summary
• Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display messages • This update contains a required software change to help improve the overall software update and diagnostics process.

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