2021 GMC Sierra 2500HD AT4 Crew Cab 4WD

If you're looking for a truck that doesn't just show up but takes over the job site, the campsite, and the left lane, say hello to this 2021 GMC Sierra 2500 AT4 Duramax. This is GMCs off-road ready heavy-duty flagship built for people who want premium comfort, serious capability, and the kind of diesel power that makes towing feel like a warmup lap. Under the hood lives the legendary 6.6L Duramax Turbo Diesel, paired with the smooth and tough Allison transmission - one of the most respected diesel powertrains on the road. Whether you're towing a fifth wheel, hauling equipment, or passing slower traffic with a smirk, the Duramax delivers the torque, strength, and confidence that only a diesel can. Being an AT4, this truck isn't just powerful it's adventurous. It comes factory ready for the rough stuff with offroad suspension tuning, skid plates, Rancho shocks, and a stance that says "point me at the mountain and let's go." But step inside, and it's a completely different vibe: premium materials, sharp design, and comfort features that make long hauls feel like luxury cruises. The 2021 AT4 strikes that perfect balance between rugged and refined. You get that aggressive offroad swagger on the outside, while inside youre wrapped in a cabin that feels more like a highend SUVonly with way more capability. Whether youre towing the toys, exploring the backroads, or showing up looking sharp for work, this truck does it all without breaking a sweat. In short, this Sierra 2500 AT4 Duramax is the truck for someone who wants unstoppable performance, premium comfort, and the kind of presence that turns parking lots into admirers clubs. Call us today 360-474-3276 dwaynelanechevrolet.com ++++++++++++++++++++++++++++++++++++++++++++++++++++ 10-Speed Automatic, 4WD, Jet Black w/Kalahari Accents w/Perforated Leather-Appointed Front Seat Trim, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4.2" Diagonal Color Display Driver Info Center, 4G LTE Wi-Fi Hotspot Capable, Bed View Camera w/2 Trailer Camera Provisions, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Front Prem Floor Liners w/Removable Carpet Insert, GMC Connected Access Capable, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Rear Vision Camera, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Painted Black Surround Grille, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Rear Windows w/Express Down, Power Windows w/Driver Express Up/Down, Preferred Equipment Group 4SB, Rear Prem Floor Liners w/Removable Carpet Insert, Rear Wheelhouse Liners, Red Recovery Hooks, Remote Vehicle Starter System, Spray-On Pickup Box Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, Unauthorized Entry Theft-Deterrent System, Wireless Phone Projection, X31 Off-Road Package. ++++++++++++++++++++++++++++++++++++++++++++++++++++ Dwayne Lane's Auto Family!!! We'll Take Care of You!

Additional Information

Gooseneck/5th Wheel Package,Gooseneck/5th Wheel Prep Package,Preferred Equipment Group 4SB,X31 Off-Road Package,6 Speakers,6-Speaker Audio System Feature,AM/FM radio: SiriusXM with 360L,HD Radio,Premium audio system: Premium GMC Infotainment System,Radio: AM/FM w/Premium GMC Infotainment System,SiriusXM w/360L,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,12-Volt Rear Auxiliary Power Outlet,120-Volt Bed Mounted Power Outlet,120-Volt Instrument Panel Power Outlet,Driver Memory,Memory seat,Power driver seat,Power steering,Power windows,Power Windows w/Driver Express Up/Down,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Manual Tilt-Wheel/Telescoping Steering Column,Off-Road Suspension,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Electrical Lock Control Steering Column,Front anti-roll bar,Front wheel independent suspension,Keyless Open & Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Door Locks,Pickup Box,Brake assist,Electronic Stability Control,Hill Descent Control,Delay-off headlights,Front fog lights,Fully automatic headlights,Panic alarm,Security system,Unauthorized Entry Theft-Deterrent System,Speed control,2-Speed Active Transfer Case,220 Amps Alternator,Engine Block Heater,Exhaust Brake,Heavy-Duty 80 Amp Battery,Auto-dimming door mirrors,Bumpers: body-color,Front License Plate Kit,Heated door mirrors,LED Cargo Area Lighting,Painted Black Surround Grille,Power door mirrors,Rear step bumper,Rear Wheelhouse Liners,Red Recovery Hooks,Spray-On Pickup Box Bed Liner w/AT4 Logo,Turn signal indicator mirrors,Winter Grille Cover,2 USB Ports,2 USB Ports (1st Row),2nd Row Dual USB Charge-Only Ports,4.2" Diagonal Color Display Driver Info Center,4G LTE Wi-Fi Hotspot Capable,Apple CarPlay/Android Auto,Auto-dimming Rear-View mirror,Bed View Camera w/2 Trailer Camera Provisions,Compass,Compass Located In Instrument Cluster,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Front Prem Floor Liners w/Removable Carpet Insert,Front reading lights,GMC Connected Access Capable,HD Rear Vision Camera,Heated steering wheel,Illuminated entry,OnStar & GMC Connected Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Prem Floor Liners w/Removable Carpet Insert,Rear reading lights,Rear seat center armrest,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trip computer,Voltmeter,Wireless Phone Projection,10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,Front Bucket Seats,Front Center Armrest,Heated & Ventilated Front Bucket Seats,Heated 2nd Row Outboard Seats,Heated Driver & Front Outboard Passenger Seats,Heated front seats,Heated rear seats,Perforated Leather-Appointed Front Seat Trim,Power passenger seat,Split folding rear seat,Ventilated front seats,Passenger door bin,Hitch Guidance w/Hitch View,In-Vehicle Trailering System App,Integrated Trailer Brake Controller,18" Machined Aluminum Wheels,Alloy wheels,Deep-Tinted Glass,Power Front Passenger Windows w/Express Up/Down,Power Rear Windows w/Express Down,Variably intermittent wipers