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May 5, 2025 Over-the-air update

Software Update for your 25MY Chevrolet Silverado / GMC Sierra: • Enables the active cabin ventilation feature

Chevrolet technical service bulletin N25-250520 for 2024-2025 Chevrolet Silverado 1500 and 2024-2025 GMC Sierra 1500.

Bulletin number
N25-250520 (N25-250520)
Component
Unknown or other
Summary
Software Update for your 25MY Chevrolet Silverado / GMC Sierra: • Enables the active cabin ventilation feature. • When windows are remotely lowered using the key fob, the HVAC blower will turn on. 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.

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