2025 GMC Sierra 2500 Price: $91,685 756 Smithtown Bypass, Smithtown, NY 11787 More Smithtown, NY GMC Sierra 2500's 2025 $73,525 Miles 2025 $73,030 Miles 2025 $105,545 Miles 2025 $68,970 Miles 2025 $78,535 Miles 2025 $95,295 Miles