• Improvements to accuracy of Park Assist messaging
Chevrolet technical service bulletin 661.20 for 2026 Chevrolet Silverado EV and 2026 GMC Sierra EV.
- Bulletin number
- 661.20 (661.20)
- Component
- Unknown or other
- Summary
- • Improvements to accuracy of Park Assist messaging. • Fixes to improve performance of driver assistance systems and rear view camera. • Improvements to responsiveness of rear view camera. • Fixes to address Super Cruise disengaging erroneously.
Vehicles covered
- Chevrolet Silverado EV 2026 2026
- GMC Sierra EV 2026 2026
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