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May 1, 2026 Over-the-air update

• Improves traction and stability control when accelerating or on uneven terrain

Cadillac technical service bulletin 661.50 for 2025 Cadillac Celestiq.

Bulletin number
661.50 (661.50)
Component
Unknown or other
Summary
• 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 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. • Fixes to help ensure proper opening and closing speed for power doors. • Improvements to longevity for the drive unit used for power doors. • Improvements to the performance of driver assistance features. • Fixes to help ensure accurate driver display messages and alerts.

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