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August 12, 2026 Over-the-air update

• Improvements to power door opening and closing performance • Improved vehicle performance when driving...

Cadillac technical service bulletin 663.80 for 2026 Cadillac Celestiq.

Bulletin number
663.80 (663.80)
Component
Unknown or other
Summary
• Improvements to power door opening and closing performance • 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 • Better performance and reliability of wireless phone charging

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