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May 22, 2026 Over-the-air update

• Improvements to traction and stability control on uneven terrain • Improvements to braking performance...

Chevrolet technical service bulletin 661.30 for 2027 Chevrolet Bolt EV.

Bulletin number
661.30 (661.30)
Component
Unknown or other
Summary
• Improvements to traction and stability control on uneven terrain • Improvements to braking performance on low-traction surfaces • Improvements to assisted braking • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system

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