New 2026 GMC Sierra 1500 AT4 For Sale Warminster, PE

The Black Widow Package on this 2026 GMC Sierra 1500 AT4 (Stock #509) takes bold styling and off-road capability to the next level. Featuring a 6-inch suspension lift, 20-inch Black Widow wheels wrapped in 35-inch all-terrain tires, custom leather interior, power running boards, performance upgrades, and exclusive Black Widow badging throughout, this truck is built to stand out on and off the road!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:$1500 - Buick GMC Bonus Cash. Exp. 08/03/2026 $1750 - Buick & GMC Consumer Cash Program. Exp. 08/03/2026 $4,000 - O'Neil GMC Discount – Available to all customers. Exp. 08/03/2026 $3,500 - O'Neil GMC Discount – Available to all customers. 2026 GMC Sierra 1500 SLT/AT4 Exp. 08/03/2026