• Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank...
GMC technical service bulletin 662.30 for 2026 GMC Hummer EV SUV and 2026 GMC Hummer EV Pickup.
- Bulletin number
- 662.30 (662.30)
- Component
- Unknown or other
- Summary
- • Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank screens and audio drop-outs • Improvements to vehicle software update installation • Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics • Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display message • Updates to allow drive mode selection from the center display
Vehicles covered
- GMC Hummer EV SUV 2026 2026
- GMC Hummer EV Pickup 2026 2026
VIN decoder
See the problems and recalls for an exact car
Buying a used GMC Hummer EV SUV?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history