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April 10, 2026 Over-the-air update

• Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking

Buick technical service bulletin 661.20 for 2024 Buick Envision.

Bulletin number
661.20 (661.20)
Component
Unknown or other
Summary
• Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.

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