2025 GMC Sierra 1500 Price: $63,850 756 Smithtown Bypass, Smithtown, NY 11787 More Smithtown, NY GMC Sierra 1500's 2025 $72,185 Miles 2024 $74,305 Miles 2025 $68,630 Miles 2024 $74,305 Miles 2025 $72,185 Miles 2025 $57,295 Miles