121,262 miles
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The 2021 GMC Sierra 1500 AT4 is a 4WD off-road-oriented pickup featuring a 6.2L V8 or 3.0L Duramax Turbo Diesel engine, 10-speed automatic transmission, and advanced off-road suspension with a 2-inch factory lift.
Engine and Performance
Engine Options: 6.2L V8 gas or 3.0L Duramax Turbo Diesel
Horsepower & Torque: 6.2L V8 produces 420 hp and 460 lb-ft torque; 3.0L Diesel produces 277 hp and 460 lb-ft torque
Transmission: 10-speed automatic
Drivetrain: Four-wheel drive (4WD) with automatic locking rear differential
Suspension: Rancho monotube shocks with 2-inch factory lift for improved ground clearance
Traction Control: Traction Select System with Off-Road mode for optimized performance on unpaved surfaces
Dimensions and Wheels
Wheelbase: 147" Crew Cab short box or 157" Crew Cab long box
Wheels: 18" x 8.5" machined aluminum with Dark Grey accents; spare 17" steel wheel
Tires: 265/65R18 all-terrain, blackwall; spare 265/70R17 all-season
Bumpers: Body-color front and rear with rear CornerStep
Exterior Features
Lighting: LED reflector headlamps, LED fog lamps, LED taillamps, LED cargo area lighting
Mirrors: Heated, power-adjustable, power-folding, driver-side auto-dimming with puddle lamps and memory
Grille: Body-color surround with high gloss black mesh and black chrome inserts; CarbonPro edition has unique grille
Interior and Technology
Infotainment: 8" color touchscreen with multi-touch, wireless Android Auto and Apple CarPlay, Bluetooth streaming, HD Radio or SiriusXM with 360L
Seating: 60/40 folding rear bench with storage, center armrest with cupholders, under-seat storage
Steering: Leather-wrapped, heated, tilt and telescoping column
Driver Information: 6-gauge cluster with 4.2" color display, compass, exterior temperature, and personalization options
Trailering App: Includes checklist, trailer maintenance reminders, security alerts, and diagnostics
Fuel and Towing
Fuel Tank Capacity: Approximately 24 gallons
Towing Capability: Varies by engine and configuration; equipped with hitch guidance and trailer view
2 Sources
Off-Road Enhancements
Skid Plates: Metal front underbody protection
Suspension Lift: 2-inch factory-installed lift for rough terrain
Differential: Automatic locking rear differential for improved traction
The 2021 GMC Sierra 1500 AT4 combines off-road capability, premium interior features, and advanced technology, making it suitable for both rugged terrain and daily driving. Its combination of V8 or diesel power, 4WD, and lifted suspension ensures strong performance in diverse conditions.
| Monday | 9:00 am - 6:00 pm |
| Tuesday | 9:00 am - 6:00 pm |
| Wednesday | 9:00 am - 6:00 pm |
| Thursday | 9:00 am - 6:00 pm |
| Friday | 9:00 am - 6:00 pm |
| Saturday | 9:00 am - 3:00 pm |
| Sunday | Closed |
This vehicle may have an open safety recall. Head to the National Highway Traffic Safety Administration (NHTSA) website to perform a quick search.
Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the dealer for an up-to-date status on any recalls.
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| Monday | 9:00 am - 6:00 pm |
| Tuesday | 9:00 am - 6:00 pm |
| Wednesday | 9:00 am - 6:00 pm |
| Thursday | 9:00 am - 6:00 pm |
| Friday | 9:00 am - 6:00 pm |
| Saturday | 9:00 am - 3:00 pm |
| Sunday | Closed |
121,262 miles
