2026 GMC Sierra 1500 AT4X
$495 less than this car
- 6 mi
- 4WD
- Automatic
- Diesel
- Truck
O'Neil GMC · Warminster, PA · 0 mi away
6 miles · truck · Price dropped $2,000

Onyx Black 2026 GMC Sierra 1500 AT4X 4WD 10-Speed Automatic 3.0L I6 This 2026 GMC Sierra 1500 AT4X in Onyx Black 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:$2000 - GMC Bonus Cash. Exp. 11/30/2026 $6250 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026 $4,000 - O'Neil GMC Discount – Available to all customers. excl. 2026 Sierra 1500 PRO Exp. 12/31/2027
Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.
Among the lowest-priced · 83% of 12 similar listings ask more than this car.
How we calculate market value: comparable cars for sale now plus their last listed prices.
Price tracked by AutosXchange since Nov 5, 2026. 2 price changes at this dealership: $74,485 → $72,325 (−$2,160).
Market activity: O'Neil GMC cut prices on 47 GMC Sierra 1500 by an average of $2,003
AutosXchange Intel Hub: Price changes for this model in Pennsylvania · This model in the Intel Hub · Market movers in Pennsylvania
Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 13); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.
Same 2026 Sierra 1500 AT4X · new · within 50 miles of Warminster, Pennsylvania. All 12 comparable cars for sale, nearest first.
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2026 GMC Sierra 1500 AT4X6 miles · O'Neil GMC · Warminster, PA · 0 mi away$71,830$495 less than this car
2026 GMC Sierra 1500 AT4X6 miles · O'Neil GMC · Warminster, PA · 0 mi away$74,530$2,205 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$74,663$2,338 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$75,227$2,902 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$75,663$3,338 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$75,663$3,338 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$75,663$3,338 more than this car
2026 GMC Sierra 1500 AT4X35 miles · MALOUF GMC · North Brunswick, NJ · 34 mi away$71,219$1,106 less than this car
2026 GMC Sierra 1500 AT4X5 miles · Green Brook Buick GMC · Green Brook, NJ · 41 mi away$74,238$1,913 more than this car
2026 GMC Sierra 1500 AT4X5 miles · Green Brook Buick GMC · Green Brook, NJ · 41 mi away$75,221$2,896 more than this car
2026 GMC Sierra 1500 AT4X5 miles · Freehold Buick GMC · Freehold, NJ · 42 mi away$80,273$7,948 more than this car
2026 GMC Sierra 1500 AT4X1 miles · Geoff Penske GMC · Shillington, PA · 46 mi away$75,101$2,776 more than this carAll years and trims. Nearest first.
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
O'Neil GMC · Warminster, PA · 0 mi away
2026 GMC Sierra 3500 HD Denali Ultimate DRW6,383 miles · O'Neil GMC · Warminster, PA · 0 mi away$90,345
2026 GMC Sierra 1500 Pro6 miles · O'Neil GMC · Warminster, PA · 0 mi away$46,220
2026 GMC Sierra 1500 Elevation6 miles · O'Neil GMC · Warminster, PA · 0 mi away$46,345
2026 GMC Sierra 1500 Elevation6 miles · O'Neil GMC · Warminster, PA · 0 mi away$46,635
2026 GMC Sierra 1500 Elevation6 miles · O'Neil GMC · Warminster, PA · 0 mi away$46,790
2026 GMC Sierra 1500 Elevation7 miles · O'Neil GMC · Warminster, PA · 0 mi away$46,840
2026 GMC Sierra 1500 Elevation6 miles · O'Neil GMC · Warminster, PA · 0 mi away$47,130
2026 GMC Sierra 1500 Elevation6 miles · O'Neil GMC · Warminster, PA · 0 mi away$47,130