Some trucks are built for the jobsite, and some are built for the trail, this one confidently handles both. The 2026 GMC Sierra 3500HD AT4 in Coastal … Read More…
Some trucks are built for the jobsite, and some are built for the trail, this one confidently handles both. The 2026 GMC Sierra 3500HD AT4 in Coastal Dune delivers serious heavy-duty capability with rugged off-road performance. Powered by the Duramax 6.6L V8 Turbodiesel paired with a 10-speed automatic transmission and 4WD, it provides impressive torque and confident towing strength. The Crew Cab configuration offers spacious seating for passengers while maintaining true work-ready durability. Inside, the Jet Black interior with Kalahari accented perforated leather adds comfort and premium detail to a capable pickup. This Sierra AT4 is designed for drivers who need strength, versatility, and everyday usability in one truck.Ownership value is enhanced with the included 2-Year/24k Young Auto Group Maintenance Plan, featuring 2 years of free oil changes, free tire rotations, and free safety inspections. This coverage helps simplify routine maintenance while keeping the truck performing at its best. Advanced driver-assist and safety technologies help provide confidence whether towing, commuting, or traveling off the beaten path. The 2026 GMC Sierra 3500HD AT4 blends diesel power, off-road capability, and interior comfort into a well-rounded heavy-duty pickup. Price does not include any dealer installed options or accessories, and new vehicle pricing may include rebates and manufacturer incentives for qualified buyers; see dealership for details. Tax, title, and license fees are extra. Read Less
Chassis Details
Stock Number
1N2141
Stock Type
New
Year
2026
Make
GMC
Model
Sierra 3500
Class
3
Drivetrain
4WD
Cab Type
Crew
Vehicle Trim
AT4
Interior Color
Jet Black
Seating Capacity
5
Exterior Color Description
Coastal Dune
Engine Cylinder Count
8
Transmission Type
Automatic
Fuel Type
Diesel
Engine Model
L5P
Engine Size (L)
6.6
Brake Type
Hydraulic
Vehicle Options
X31 Off-Road Package
7 Speakers
AM/FM radio: SiriusXM with 360L
Bose Premium 7-Speaker Sound System
Premium audio system: Premium GMC Infotainment System
Radio: AM/FM Stereo with Premium GMC Infotainment System
SiriusXM with 360L Trial Subscription
Steering Wheel Audio Controls
Air Conditioning
Automatic temperature control
Electric Rear-Window Defogger
Front dual zone A/C
Rear window defroster
120-Volt Bed Mounted Power Outlet
120-Volt Instrument Panel Power Outlet
Driver Memory
Memory seat
Power driver seat
Power Front Windows with Passenger Express Up/Down
Power steering
Power windows
Push Button Start
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
Emergency communication system: OnStar Services capable
Front anti-roll bar
Front wheel independent suspension
Keyless Open and Start
Low tire pressure warning
Occupant sensing airbag
Overhead airbag
Pickup Bed
Brake assist
Electronic Stability Control
Lane Departure Warning System
Exterior Parking Camera Rear
Hill Descent Control
Auto High-beam Headlights
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
Heavy-Duty 80 Amp-Hour Battery
Auto-dimming door mirrors
Bumpers: body-color
Heated door mirrors
IntelliBeam Automatic High Beam on/Off
LED Cargo Area Lighting
Power door mirrors
Rear step bumper
Rear Wheelhouse Liners
Spray-on Pickup Bedliner with GMC Logo
Turn signal indicator mirrors
2 Charge-Only Rear USB Ports
2 Charge/Data USB Ports Inside Center Console
2 USB Ports
Auto-dimming Rear-View mirror
Automatic Emergency Braking
Bed View Camera with Two Trailer Camera Provisions
Buckle to Drive
Compass
Driver door bin
Driver vanity mirror
Floor-Mounted Center Console
Following Distance Indicator
Forward Collision Alert
Front Pedestrian Braking
Front reading lights
GMC Premium 13.4" Diagonal Information Display
HD Surround Vision
Heated steering wheel
Illuminated entry
Outside temperature display
Overhead console
Passenger vanity mirror
Premium Front Floor Liners with Removable Carpet Insert
Premium Rear Floor Liners with Removable Carpet Insert