• Improvements to battery health diagnostics • Fixes for efficiency when using fast charging stations •...
GMC technical service bulletin N25-251670 for 2025 GMC Hummer EV SUV and 2024-2025 GMC Hummer EV Pickup.
- Bulletin number
- N25-251670 (N25-251670)
- Component
- Unknown or other
- Summary
- • Improvements to battery health diagnostics • Fixes for efficiency when using fast charging stations • Improvements to reliability for climate control and charging • Improvements to the accuracy of efficiency values • Improvements to shifting • Fixes to protect battery health and adjust charge limits • Improvements to diagnostics that impact propulsion, charging, and One-Pedal Driving 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
- GMC Hummer EV SUV 2025 2025
- GMC Hummer EV Pickup 2024-2025 20242025
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