• Improvements to vehicle software updates
GMC technical service bulletin 663.40 for 2026 GMC Hummer EV Pickup.
- Bulletin number
- 663.40 (663.40)
- Component
- Unknown or other
- Summary
- • Improvements to vehicle software updates
Vehicles covered
- GMC Hummer EV Pickup 2026 2026
VIN decoder
See the problems and recalls for an exact car
Buying a used GMC Hummer EV Pickup?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history