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Delivers robust towing and hauling with advanced performance for any demanding job or terrain.
AT4 Off-Road Capability
Special AT4 features include off-road suspension, skid plates, and advanced all-terrain support.
Advanced Safety Suite
Comprehensive driver assistance tech like lane keep, collision alert, and surround vision cameras.
Premium Crew Cab Comfort
Spacious luxury interior with heated seats, smart infotainment, and connectivity for all passengers.
The key features listed may depend on the trim, options, or equipment package.
2026 GMC Sierra 3500 HD - Description
2026 GMC Sierra 3500HD 4WD Crew Cab Standard Box AT4 for sale
Off-Road Capability
>> AT4 Off-Road Suspension - Multimatic dampers with internal bypass for better control on rough terrain.
>> 2-inch Factory Lift - Improves ground clearance.
>> Hill Descent Control - Automatically manages downhill speed on steep/technical surfaces.
>> Off-Road Rock Mode - Tailors traction and throttle mapping for rocky terrain.
>> All-Terrain Tires - More aggressive tire tread for mud, rocks, and loose surfaces.
>> Skid Plates - Underbody protection for fuel tank, transfer case, and steering components.
>> 4WD with Automatic Locking Rear Differential - Improved traction in low-grip or uneven surfaces.
Exterior Styling & Practical Add-Ons
>> AT4-Specific Exterior Styling - Unique grille, bumpers, and accents that signal enhanced rugged capability.
>> Red Recovery Hooks - Stronger front tow hooks built for off-road recovery.
>> LED Fog Lamps - Improves low-light visibility in bad weather or trails.
>> Rugged AT4 Badging - Distinct trim identity.
Technology & Convenience Enhancements
>> Larger Infotainment Display Options - Bigger screen choices than standard on SLE.
>> Wireless Apple CarPlay / Android Auto - Seamless smartphone integration.
Bose Premium Sound - rich, immersive sound.
Towing & Hauling Features
>> Integrated Trailer Brake Controller - Better towing control straight from the factory.
>> Advanced Trailering Tech - Available cameras and assist features
Safety & Driver Assistance Upgrades
>> Front and Rear Park Assist - Helps maneuver in tight off-road or work environments.
>> HD Surround Vision - Provides selectable digital camera views of the area around your vehicle.
>> Automatic Emergency Braking - helps reduce the severity of frontal collisions.
>> Forward Collision Alert - provides warnings of potential impacts ahead.
>> Front Pedestrian Braking - assists with detecting pedestrians and applying braking when necessary.
>> Lane Keep Assist with Lane Departure Warning - helps prevent unintended lane departures.
2026 GMC Sierra 3500 HD - Options
Exterior
Sunroof
Rear Wiper
Heated Mirrors
Electric Mirrors
Convertible
Rear Spoiler
Front Deflectors
Steps
Tinted Windows
Extended Box
Fiberglass Cargo Box
Front Tow Hooks
Trailer Hitch
HID Headlights
Winch
Brush Guard
Tilting Platform
Towing Equipment
Deflectors
Retractable Mirrors
Oversized Wheels
Automatic Headlights
Box Cover
Rear Step Bumper
Short Box
Halogen Headlamps
Xenon Headlights
Grille Guard
Dual Rear Wheels
Rear Tow Hook
Panoramic Sunroof
Roof Rails
Window Deflectors
Towing Cables
Wheel Covers
T-Top Roof
Roof Spoiler
Fog Lights
Aerodynamic Skirts
Rear Step
Glass Sunroof
Short Bed
Long Bed
Crew Cab
King Cab
Extended Cab
Turn Signal Mirrors
Aluminum Wheels
Paint Protection Film
Headlight Washers
Power Retractable Running Boards
Chrome Wheels
Steel Wheels
LED Headlamps
Rear All-Season Tires
Front All-Season Tires
Convertible Hardtop
Stepside Box
Windshield Wiper Deicer
Bi-Beam LED Headlamps
Header Rail
Tailgate Release Bump Switch
Trailer Brake Controller
Rear Camera Washer
Adjustable Tie-Down Rails
Large Fuel Tank
Power Tailgate Window
UV Glass Protection
Front Spoiler
13-Inch Alloy Wheels
14-Inch Alloy Wheels
15-Inch Alloy Wheels
16-Inch Alloy Wheels
17-Inch Alloy Wheels
18-Inch Alloy Wheels
19-Inch Alloy Wheels
20-Inch Alloy Wheels
21-Inch Alloy Wheels
22-Inch Alloy Wheels
Alloy Wheels
Backrest
Fuel Level Indicator
Hitch
Rearview Mirror
Skid Plate
Stands
Coolant Temperature Gauge
Hands Thumb Warmer
Reverse
Speedometer
Tachometer
Electric Starter
Heated Handlebars
Mountain Handle Bars
Short Track
Stabilizer Bar
Tunnel Roll
Add-On Screen Room
Satellite Dish
TV Antenna
Rear BackUp Camera
Central Vac
Hitch
Trailer Hitch
Premium Audio
Awning
Front Storage Trunk
Tub
Roof Rack
Sofa Bed/Daveno
Furnace
Hands thumb warmer
Block Heater
Water Heater
DSI Water Heater
Air Conditioner(Central-Ducted)
Air Conditioner(Dash)
Speedometer
Cable Hookup
Hill Ascent Control
DC Converter
Electrical Jacks
LPG/CO2 Detectors
Shower
Exterior Shower
Ladder
Oven
Convection Oven
ABS Brakes
Gas Generator
Propane Generator
Diesel Generator
Double Bed
Range Hood
Jack/Jill Bunks
Aluminum Wheels
Cassette Player
CD Player
DVD Player
Twin Bed
Queen Bed
Bunk Beds
Skylight
Washer
VCR
Microwave
Two-toned Paint
Insulated Plumbing
Stove
Deck
Sliding Door
Premium and/or Oversized Wheels
Electrical Hookup
Propane Tank
Power Mirrors
Spare Tire
Dryer
Power Seat
Ventilated Seats
Basement
Stabilizer Jacks
Stereo
Air Ride Suspension
Reverse Park Assist/ Parking Sensors
Toilet
Portable Toilet
Transmission Cooler
Overdrive Transmission
TV
Ceiling Fans/Vents
Hydraulic Jacks
Power Windows
Tilt Steering
Telescoping Steering Wheel
Ceiling air conditioner
Bunk
Hydraulic jack
Driver door
Touring Fairing
Anti Lock Brake System
Fuel Guage
Electric Fuel Guage
Aftermarket Exhaust
Driving Lights
Windshield
Headlights
Heated Handles
DC Outlet
Hand Protectors
Engine Plate Protection
Saddlebags
Heated Seat
Storage Rack
Winch
Air conditioning
AM/FM Stereo
Alarm
Auto Pilot
Autohelm
Bathing Platform
Battery Charger
BBQ
Bilge Pump
Bow Rider
Cockpit awning
Cockpit Cover
Compass
Convertible Roof
Convertible top/bimini
Davit
Depth Finder
Dinghy
Dodger
Fish finder
Furling
Generator
GPS
Halon system
Hard Top
Holding tank
Home Theatre
Hot water tank
Hydraulic Steering
Ice Maker
Life raft
Loran
Power Balancing
PowerSteering
Radar
Refrigerator
Refrigerator & Freezer
Remote Starter
Safety Tarpaulin
Sail Covers
Shore power
Shower
Snap in carpet
Spot Light
Stantions
Tiller handler
Trailer
Transom Shower
Travel Cover
Trim tabs
VHF
Aluminum Wheels
Berth
Box
Bucket
Cab
Chassis Skirts
Dehumidifier
Double Bunk
Double chassied
Dual 150 gallon fuel tank
Dual 100 gallon fuel tank
Dual 80 gallon fuel tank
Dual Exhaust
Half Fenders
Headache Rack
Overhead deflector
Planter
Radio/CB
Side deflector
Single Exhaust
Sleeper
Snowblower
Traction control
Passenger Airbag
Trip odometer
Tracking control TRAC
Keyless entry
Disk Brakes
Hydraulic brakes
Remote unlock system
Intermittent wiper
Fabric interior
Temperature controller
Mirrors
Power brakes
Climate control
Power steering
Driver's seat - lumbar
Reclining seats
Adjustable Steering
Power windows
Power doors
Cruise Control
Seat covers
Heated mirrors
Backup Sensor
CD disk
Built-in Bluetooth
USB Port
Footboard
Electric mirrors
Passenger side mirror
Hydraulic lifting bridge
Welcome lighting
Cup holder
Reading lights
Tachometer
Break Away Switch
Interior Wiring
Spare Tire
Tilt Steering
Trailer Brakes
Generator
Hydraulic Jacks
Hydraulic Steering
Off-Road Tires
Plow Package
Tow Package
Travel Cover
Interior
Engine Block Heater
Power Adjustable Seats
Tachometer
Power Sunroof
Power Windows
Electric Fuel Latch
Front Air Conditioning
Leather Seats
Rear Heating Controls
Folding Rear Seats
Heated Seats
Memory Seats
Adjustable Steering Wheel
Roof Luggage Rack
Fabric/Cloth Seats
6-7-8 Passenger Seating
Wheelchair Accessible
Adjustable Pedals
Extendable Mirrors
Mirrors
Manually Adjustable Seats
Leather Steering Wheel
Dual-Zone Climate Control
Heated Rear Seats
Tri-Zone Climate Control
Illuminated Driver's Side Vanity Mirror
Driver's Seat Lumbar Support
Lumbar Support Passenger Seat
Rear Trunk Access
Ambient Lighting Package
Interior Wood Trim
Sun Visor with Illuminated Mirror
Leatherette Interior
Remote Controlled Tank Flap
Vinyl Seats
Integrated Child Seat
Stow'N Go
Dual Sliding Doors
Heated Front Seats
Automated Sliding Doors
Interior Fuel Latch Release
Driver's Side Power Seat
Electric Passenger Seat
Automatic Climate Control
Cargo Cover
Rear Climate Control
Luggage Cover
Illuminated Passenger Vanity Mirror
Auto-Dimming Rearview Mirror
Half Leather Seats
Rear Air Conditioning
Cross-Traffic Alert
Rear Window Defroster
All-Wheel Steering
Memory Mirrors
Massage Seat
Ventilated Rear Seats
Day and Night Rear View Mirror
Power Rear Door
Driver Seat Memory System
Glove Box Lock
Electrochromic Driver's Side View Mirror
Deodorizing Air Filter
3rd Row Seats
Flat Folding
Rear Seat Heater Ducts
Cabin Air Filter
Cargo Net
Automatic Air Recirculation Control
Power Tilt & Telescopic Steering Wheel
LED Ambient Lighting
Side Window Defoggers
Key Lockout Protection
15-Speaker Audio
9-Speaker Audio
Pollen Filter
Ventilated Front Seats
4-Speaker Audio
6-Speaker Audio
8-Speaker Audio
10-Speaker Audio
12-Speaker Audio
11-Speaker Audio
Performance
Power Steering
Power-Assisted Brakes
Off-Road Suspension
Limited Slip Differential
JDM Conversion
Right-Hand Drive
Off-Road Tires
Four-Wheel Drive (4WD)
All-Wheel Drive (AWD)
Air Suspension
Adjustable Suspension
Automatic Transmission - 4 Speed
Automatic Transmission - 5 Speed
Automatic Transmission - 6 Speed
Automatic Transmission - 7 Speed
Automatic Transmission - 8 Speed
4-Speed Manual Transmission
5-Speed Manual Transmission
6-Speed Manual Transmission
7-Speed Manual Transmission
8-Speed Manual Transmission
Automatic Transmission
Manual Transmission
Diesel Fuel
Gasoline Fuel
Natural Gas Fuel
Hybrid Fuel
Electric Fuel
4-Cylinder Engine
5-Cylinder Engine
6-Cylinder Engine
8-Cylinder Engine
10-Cylinder Engine
12-Cylinder Engine
Performance Tires
Front-Wheel Drive (FWD)
9-Speed Manual Transmission
Automatic Transmission - 9 Speed
Start-Stop System
Continuously Variable Transmission (CVT)
Hydrogen Fuel System
Plug-In Electric Fast Charge
1-Cylinder Engine
3-Cylinder Engine
2-Cylinder Engine
10-Speed Manual Transmission
Dual Shift Mode Transmission
Automatic Transmission - 10 Speed
Automatic Transmission - 11 Speed
Automatic Transmission - 2 Speed
DOHC
Multi-Terrain Select
Macpherson Strut Front Suspension
Sequential Shift Mode
Stainless Steel Exhaust System
Paddle Shifters
DAC (Downhill Assist Control)
Dual Exhaust Tip
Sport Tuned Suspension
ECO Mode
Off-Road Management System
Sport Seats
Intelligent Throttle Control
Torque Control
Drive Mode Select
Deep Snow/Mud Mode
Grip Control
Regenerative Braking System
Cooled EGR System
Tow/Haul Mode
Acoustic Control Induction System
Ultra Low Emissions Vehicle
Low Emissions Vehicle
Adaptive Suspension
Turbocharged Engine
Differential Locks
Technology
Cruise Control
Remote Starter
Remote Trunk Release
Remote Unlock System
Powered Doors
Power Outlet
OnStar
Cellphone Connectivity
Steering Wheel Audio Controls
Satellite Radio
Backup Camera
Night Vision
Rear Audio Controls
Windshield Defroster
Digital Compass
Power Liftgate
External Thermometer
Navigation System (GPS)
Smart Key
Rain-Sensing Windshield Wipers
Backup Sensors
Remote Defroster
TV / Video
Push Button Start
Bose Sound System
Rear DVD Entertainment System
Bluetooth Integration
USB Port
HomeLink
HD Radio
Heated Steering Wheel
Proximity Sensors
Apple CarPlay
Android Auto
Head-Up Display
Wireless Charging
360-Degree Camera
Front-Facing Camera
Side Camera
Keyless Entry
Manual Steering
Smart Device Integration
WiFi Hotspot
Automated Parking
Lane Tracing Assist
SiriusXM® 3-month Trial
Lane Departure Alert with Steering Assist
Oncoming Vehicle Detection/Braking
Oncoming Pedestrian Detection/Braking
Cyclist Detection and Night Time Pedestrian Detect
Pre-Collision System with Pedestrian Detection and
Multiple USB Charging Ports
Sway Warning System
Front-to-Front Risk Detection
Voltmeter
Oil Pressure Gauge
Multi-function Display
Voice Recognition
Eco Drive Monitor
Stolen Vehicle Locator
Embedded Traffic and Weather
SMS-to-speech and Email-to-speech
AC Charger
Remote Vehicle Management
Connected Navigation Services (Subs. Required)
Connected Navigation Services
Destination Assistance Service
Key Fob Remote Climate Start
12V Accessory Outlet
Active Noise Cancellation
Lithium-Ion Battery
Vehicle Proximity Alert
Traffic Jam Assist
Digital Display Mirror
Steering Wheel Controls
Adaptive Cruise Control
AM/FM Radio & CD Player
USB-C Port
Cruise Control-Adaptive
Security
Ignition Interlock
Anti-Lock Braking System (ABS)
Stability Control
Driver Airbag
Dual Airbags
Side Impact Airbags
Traction Control
Child Safety Locks
Emergency Satellite System
Trip Odometer
Rear Head Airbags
Head Side Airbags
Trunk Emergency Release
Hill Ascent Control
Rollover Protection
Roll Bar
Hydraulic Brakes
Anti-Theft System
Airbags
Tire Pressure Monitoring
Child Seat Anchors
Passenger Airbag
Emergency System
Lane Departure Warning
Airbag On/Off Switch
Passenger Airbag Sensor
Spare Tire
Blind Spot Monitor
Automatic Door Lock
Driver Assistance System
Forward Collision Warning
Hill Start Assist
Rear Collision Warning
Knee Airbags
Seatbelt Airbags
Smart Stop Technology
Parking Assist with Auto Braking
Key Remind Warning
Road Sign Assist
Trailer Backup Guide w/ Straight Path Assist
Compact Size Spare
Stabilizer Bar
Tire Repair Kit
Emergency Assistance Suite (1-Year Subscription)
Electronic Parking Brake with Brake Hold
Whiplash-Injury-Lessening (WIL) Front Seats
Intelligent Clearance Sonar
Automatic Collision Notification
Emergency Assistance button (SOS)
Driver Monitor Camera
Rear Cross Traffic Alert
Front Cross Traffic Alert
2026 GMC Sierra 3500 HD - Technical Specifications
While we strive to ensure that the information on this website is accurate, we recommend contacting us directly to verify details and obtain additional information about the vehicle, including confirmation of prices, colors, trims, options, and other specifications.
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