2020 GMC Sierra 1500 AT4
$2,179 more than this car
- 37,556 mi
- 4WD
- Automatic
- Gasoline
- Truck
Alpine Buick GMC · Littleton, CO · 31 mi away
2021 GMC Sierra 1500 AT4 4x4
58,062 miles · truck

This 2021 GMC Sierra 1500 AT4 offers genuine capability paired with premium comfort. Finished in Black with distinctive Jet Black and Kalahari leather interior, this Crew Cab Short Box is powered by an EcoTec3 5.3L V8 paired with a 10-Speed Automatic transmission and 4WD, delivering EPA-estimated 15 city / 21 highway MPG. Actual mileage may vary. With just under 59,000 miles, this well-maintained truck combines rugged off-road readiness with refined daily-driving refinement. - Heated and ventilated front seats with 10-way power adjustment and lumbar support - Premium GMC Infotainment System with Apple CarPlay and Android Auto - Integrated Trailer Brake Controller with Hitch Guidance and In-Vehicle Trailering App - All-Weather Floor Liners and Console-Mounted Safe - AT4 High Clearance Step and Spray-On Bed Liner with AT4 Logo - Off-Road Suspension with Hill Descent Control and Auto-Locking Rear Differential - HD Rear Vision Camera with 4G LTE Wi-Fi Hotspot Capability - Heated steering wheel and power door mirrors - ProGrade Trailering System with integrated recovery hooks - Remote Vehicle Starter and Keyless Open & Start The AT4 trim combines serious work capability with thoughtful luxury details. You'll appreciate the heated steering wheel on cold mornings, the integrated trailering technology that takes guesswork out of towing, and the premium leather appointments throughout the spacious cabin. Ventilated seats keep you comfortable during long drives, while the available Wi-Fi hotspot keeps you connected wherever the road leads. Come experience this Sierra's blend of strength and sophistication. Our team is ready to walk you through all its premium features and answer your questions. Visit us today for a test drive.
Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.
Among the lowest-priced · 100% 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 10, 2026. No price change at this dealership since Nov 10 ($39,488).
AutosXchange Intel Hub: Price changes for this model in Colorado · This model in the Intel Hub · Market movers in Colorado
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.
Same 2020–2022 Sierra 1500 AT4 · used · any miles · within 50 miles of Brighton, Colorado. All 4 comparable cars for sale, nearest first.
$2,179 more than this car
Alpine Buick GMC · Littleton, CO · 31 mi away
$7,703 more than this car
Alpine Buick GMC · Littleton, CO · 31 mi away
$114 more than this car
Loveland Buick GMC · Loveland, CO · 46 mi away
$2,161 more than this car
Loveland Buick GMC · Loveland, CO · 46 mi away
2020 GMC Sierra 1500 AT437,556 miles · Alpine Buick GMC · Littleton, CO · 31 mi away$41,667$2,179 more than this car
2022 GMC Sierra 1500 AT430,482 miles · Alpine Buick GMC · Littleton, CO · 31 mi away$47,191$7,703 more than this car
2022 GMC Sierra 1500 AT469,378 miles · Loveland Buick GMC · Loveland, CO · 46 mi away$39,602$114 more than this car
2021 GMC Sierra 1500 AT4118,104 miles · Loveland Buick GMC · Loveland, CO · 46 mi away$41,649$2,161 more than this carAll years and trims. Nearest first.
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
Johnson Auto Plaza · Brighton, CO · 0 mi away
2021 GMC Sierra 2500 HD Denali 4x419,013 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$62,488
2020 GMC Sierra 1500 SLT 4x495,441 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$33,488
2022 GMC Sierra 3500 HD AT4 4x446,331 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$59,988
2022 GMC Sierra 2500 HD Denali 4x4121,649 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$49,637
2022 GMC Sierra 2500 HD AT4 4x494,114 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$54,548
2022 GMC Sierra 1500 Elevation w/3SB 4x491,346 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$33,488
2018 GMC Sierra 3500HD Chassis Base 4x495,241 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$39,392
2018 GMC Sierra 1500 SLT 4x461,387 miles · Johnson Auto Plaza · Brighton, CO · 0 mi away$32,488