2021 GMC Sierra 1500 AT4
$972 less than this car
- 55,102 mi
- 10-Speed Automatic
- Diesel
- Truck
Frontier Ford · Anacortes, WA · 0 mi away
67,000 miles · truck · Price dropped $1,042

This 2021 GMC Sierra 1500 AT4 in black delivers premium capability and refined comfort for discerning truck buyers. With 67,000 miles on the odometer, this 4WD diesel crew cab has been well maintained and offers years of reliable performance ahead. The 3.0L turbocharged diesel engine paired with a 10-speed automatic transmission achieves an impressive 22 city and 26 highway MPG, balancing power with efficiency. - Power sunroof - Premium GMC Infotainment System with Apple CarPlay and Android Auto - HD Surround Vision with multiple camera provisions - Heated and ventilated leather front seats with power adjusters - AT4 CarbonPro Edition with composite bed and premium packaging - Adaptive cruise control with lane keep assist and lane departure warning - Wireless charging and 4G LTE Wi-Fi hotspot - ProGrade Trailering System with integrated brake controller and hitch guidance - Remote vehicle starter and keyless entry with push-button start - Spray-on bed liner with LED cargo lighting The AT4 trim brings distinctive styling with unique grille surround, black chrome accents, and signature AT4 badging. Inside, the Jet Black interior with Kalahari accents and perforated leather-appointed seating creates a premium cabin atmosphere. The power sunroof, heated steering wheel, and dual-zone automatic climate control add everyday convenience and luxury. Visit us today to experience this capable and well-equipped Sierra 1500 AT4 firsthand. Our team is ready to discuss financing options and answer any questions about this exceptional truck.
Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.
Among the highest-priced · 0% of 4 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 9, 2026. 1 price change at this dealership: $40,991 → $39,949 (−$1,042).
AutosXchange Intel Hub: Price changes for this model in Washington · This model in the Intel Hub · Market movers in Washington
Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 12); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.
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Frontier Chevrolet · Anacortes, WA · 0 mi away
Frontier Chevrolet · Anacortes, WA · 0 mi away
Frontier Ford · Anacortes, WA · 0 mi away
Frontier Chevrolet · Anacortes, WA · 0 mi away
Frontier Ford · Anacortes, WA · 0 mi away
Frontier Chevrolet · Anacortes, WA · 0 mi away
Frontier Chevrolet · Anacortes, WA · 0 mi away
Frontier Chevrolet · Anacortes, WA · 0 mi away
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