• Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and...
GMC technical service bulletin 663.30 for 2024-2025 GMC Hummer EV SUV and 2024-2025 GMC Hummer EV Pickup.
- Bulletin number
- 663.30 (663.30)
- Component
- Unknown or other
- Summary
- • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages
Vehicles covered
- GMC Hummer EV SUV 2024-2025 20242025
- GMC Hummer EV Pickup 2024-2025 20242025
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