GM Update 652.20 • Improves how center display adjusts to lighting changes
Buick technical service bulletin 652.20 for 2025 Buick Envision.
- Bulletin number
- 652.20 (652.20)
- Component
- Unknown or other
- Summary
- GM Update 652.20 • Improves how center display adjusts to lighting changes. • Improved warnings when a key is missing. • Better tuning for interior lighting in Stealth mode. • Improvements to automatic low beam headlamp logic. • Smoother dimming and transitions from day to night. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Vehicles covered
- Buick Envision 2025 2025
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