• Additional protection for the health of your battery • Updates to help prevent excessive battery drain...
Chevrolet technical service bulletin 662.11 for 2026 Chevrolet Silverado 2500 and 2026 GMC Sierra 2500.
- Bulletin number
- 662.11 (662.11)
- Component
- Unknown or other
- Summary
- • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • Improvements to reliability when extending the running boards on your vehicle
Vehicles covered
- Chevrolet Silverado 2500 2026 2026
- GMC Sierra 2500 2026 2026
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