• After this update, you may need to turn your Turn Signal Activated View setting back on • Fixes to help...
GMC technical service bulletin 663.20 for 2026 GMC Hummer EV Pickup.
- Bulletin number
- 663.20 (663.20)
- Component
- Unknown or other
- Summary
- • After this update, you may need to turn your Turn Signal Activated View setting back on • Fixes to help ensure start reliability and prevent battery drain • Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. • Improved charging performance and messages • Better performance and reliability of wireless phone charging
Vehicles covered
- GMC Hummer EV Pickup 2026 2026
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