New 2026 GMC Sierra 3500 HD Pro For Sale Warminster, PA

Summit White 2026 GMC Sierra 3500HD Pro 4WD 10-Speed Automatic 6.6L V8This 2026 GMC Sierra 3500HD Pro in Summit White features:O'Neil GMC in Warminster serving Philadelphia since 1965. See the rest of our inventory at ONEILGMC.COM. Price excludes tax, tags, title, license, and dealer fees, additional rebates may apply, but internet price does include the following rebates:$1000 - Buick & GMC Consumer Cash Program. Exp. 08/31/2026 $2,500 - O'Neil GMC Discount – Available to all customers. Exp. 12/31/2026