White's Frontier Motors · Gillette, WY

2026 GMC Sierra 3500 HD AT4

16 miles · truck

1 / 27 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 3500 HD

TrimAT4

VIN1GT4UVE76TF331014

Stock numberC26377

Mileage16 miles

BodyPickup

Engine6.6L 8-cyl

Cylinders8

Displacement6.6L

TransmissionAutomatic

Drivetrain4WD

FuelGasoline

ExteriorSummit White

Towing16000

Vehicle description

Equipment Take command of every journey in this 2026 GMC Sierra 3500 AT4, a heavy-duty truck that combines premium comfort, advanced technology, and off-road capability in one impressive package. Finished in a refined white exterior, this Sierra is built to handle demanding jobs while providing a comfortable driving experience. Inside, you'll find leather seating, heated and ventilated front seats, heated rear outboard seats, a heated steering wheel, wireless charging, and a Bose premium audio system. SiriusXM capability, wireless phone projection, and steering wheel-mounted audio controls help keep you connected and entertained wherever the road leads. Equipped with the AT4 Premium Plus Package, this Sierra adds a power sunroof and off-road high-clearance steps, while the Technology Package enhances convenience with a multicolor head-up display and camera-equipped rearview mirror. The AT4 Preferred Package adds a power sliding rear window, roof marker lamps, and a universal home remote. Built for capability, this truck features the X31 Off-Road Package, ProGrade Trailering System, gooseneck/5th-wheel prep package, hitch package, trailer camera provisions, and a spray-on GMC bedliner. Rear wheelhouse liners, cargo lighting, and bed-mounted power outlets add functionality for work or recreation. Advanced driver-assistance features include adaptive cruise control, Lane Departure Warning, Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, HD Surround Vision, Safety Alert Seat, front and rear park assist, and a bed view camera to help enhance awareness when driving, towing, or maneuvering. Additional highlights include remote start, keyless open and start, rain-sensing wipers, deep-tinted glass, premium floor liners, black molded splash guards, and LED smoked amber roof marker lamps. With its blend of premium amenities, trailering technology, off-road capability, and heavy-duty strength, this GMC Sierra 3500 AT4 is ready for tough jobs, long hauls, and weekend adventures alike. Packages Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Windows with Passenger Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Gloss Black Header and Grille Insert Bars; Rear Wheelhouse Liners. AT4 Premium Plus Package: Power Sunroof; Off-Roa

Features & options (250)

Adaptive Cruise Control
Bluetooth®
Heated Steering Wheel
Remote Start
4WD/AWD
Android Auto
Apple CarPlay
Leather Seats
Wi-Fi Hotspot
Emergency Brake Assist
Lane Departure Warning
Wireless Phone Charging
Blind Spot Monitor
Forward Collision Warning
Navigation System
Parking Assistance
Rear View Camera
Tow Hitch/Tow Package
Automatic Climate Control
Entertainment System
Premium Sound System
13.4" diagonal GMC Premium Infotainment System with Google built-in
Bluetooth® streaming audio for music and select phones
Wireless Apple CarPlay capability for compatible phones
Wireless Android Auto capability for compatible phones
Customize and manage entertainment and vehicle feature setting
Voice-activated technology for phone
Wireless phone projection
For Apple CarPlay and Android Auto
Place and receive hands-free phone calls
Wi-Fi Hotspot capable
May require additional optional equipment
SiriusXM
SiriusXM with 360L Trial Subscription
Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
Rainsense automatic wipers
Deep-tinted glass
Provides added protection from sun and glare
Rear wheelhouse liners
Tailgate with EZ Lift assist, power lock & release
Hitch area lighting
18" LT275/70R18 all-terrain, blackwall spare tire
Body-color rear bumper
With integrated CornerSteps
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
20" high gloss Black aluminum wheels
GMC MultiPro Tailgate
Power lock and release
CornerStep rear bumper
Located at each end of the rear bumper
Textured step pads to help provide secure footing
Spray-on bedliner
Includes GMC logo on all trims except PRO
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass
Chrome mirror caps
AT4 features high gloss Black mirror caps
Power folding/extending
Lower convex mirrors
Heated upper glass
Integrated turn signal indicators
Puddle lamps
Perimeter lighting
Auxiliary lighting
Extends 3.31-inches
LED fog lamps
Single Rear Wheels
Cargo bed LED lighting
Provides light to find cargo in the bed
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Body-color front bumper
IntelliBeam
Side Bed Step
Black textured step pads help provide secure footing
20" LT275/65R20 all-terrain, blackwall tires
Black beltline moldings
High gloss Black mirror caps
Body-color door handles
Cargo tie-downs
12-fixed rated at 500 lbs. per corner
Grille, Gloss Black header and grille insert bars with Black chrome accents
Tailgate and bed rail protection caps
Spare tire carrier lock
Helps keep spare tire secure
Smoked Amber LED roof marker lamps
Roof-mounted lamps near the front of the cab
Power sliding rear window with rear defogger
Front and rear Black molded splash guards
Fit directly behind the wheels
Rear splash guards include brand logo
Off-Road High Clearance Steps
Textured step pads help provide secure footing
Power sunroof
Retracts into the roof
Offers tilt and slide features with express-open and -close
Summit White
Front license plate bracket
Manual tilt and telescoping steering column
Front bucket seats
Carpeted floor covering
Color-keyed to match the interior
Power windows with driver and front passenger express-up/down
If obstruction is detected, the anti-pinch feature will auto-reverse
120-volt box-mounted power outlet
3-prong auxiliary household-style outlet
Located in the pickup bed
Rear air vents
Provides cabin comfort for rear occupants
Rear window defogger
Steering-wheel mounted controls
USB ports
(2) Charge ports located on rear of console
(2) Data/charge ports located inside center console
Heated rear outboard seats
Passengers can manage heat settings with their own controls
Outside temperature display
Located in infotainment display
Front center console
Keyless Open and Start
Lockout protection helps you avoid locking keys in the vehicle
Premium front floor liners with removable carpet insert
Seat trim, Perforated Front Leather seating surfaces
Power windows with driver express-up/down
10-way power front passenger seat
Includes 8-way power front passenger seat
Includes a 2-way power lumbar control
Compass
Located in instrument cluster
Power door locks
Assist handles
Front A-pillar mounted for Driver and Passenger
Rear B-pillar mounted
Heated driver and front outboard passenger seats
Individually controlled
120-volt power outlet
Located on the instrument panel
You can always override the feature and take control
Dual-zone automatic climate control
Allows individual climate settings for both driver and front passenger
12.3" diagonal color Driver Information Center
High definition display provides crisp, premium appearance
(2) First row, located on console
Up-level rear seat with storage package
60/40 Full-length folding bench seat
Seatback storage on left and right side
Center fold out armrest with 2 cupholders
Underseat storage (full cab width)
10-way power driver seat with power lumbar
Includes 8-way power driver seat
Wrapped steering wheel
Power windows with rear express-down
Driver memory
Premium rear floor liners with removable carpet insert
Ventilated driver and front passenger seats
Cooling feature includes both seatbacks and cushions
In-Vehicle Trailering App
Checklist
Trailer maintenance reminders
Trailer security alerts
Trailer mileage
Tow/haul reminder
Trailer electrical diagnostics
Wireless Charging
Uses induction technology for select portable electronic devices
Convenient charging location on the top of the center console
Theft-deterrent unauthorized entry system
Helps deter unauthorized entry, helping to protect your vehicle
Head-Up Display
Multi-color 15" diagonal Head-Up Display
Adjustable vertical position and brightness of the display
Universal Home Remote
3-channel programmable
Rear Camera Mirror
The feature also allows brightness, vertical tilt and zoom adjustments
Jet Black with Kalahari accents, Perforated Front Leather seating surfaces
Four wheel drive
Heavy-duty 720 cold-cranking amps battery
80 Amp-hr
Maintenance-free with rundown protection and retained accessory power
Integrated trailer brake controller
Integrated with the antilock brake system (ABS)
Digital Variable Steering Assist
11,550 lbs. GVWR
Brake pad wear indicator
Autotrac 2-speed transfer case with push button controls
4-button control 2WD, Auto, 4WD, 4WD LO
2WD High for most on-road and highway situations
Automatically engages 4WD until traction is regained
Red vertical recovery hooks
Two front frame-mounted
Heavy-Duty Air Filter
Skid plates
Help protect the front underbody, oil pan and transfer case
Fully boxed frame
Hydroformed front section
High-strength steel
4-wheel antilock disc brakes
Automatic locking rear differential
170-amp alternator
Off-Road suspension
Gooseneck / 5th Wheel Prep Package
Hitch platform to accept Gooseneck or 5th wheel hitch
Box mounted 7-pin trailer harness
Emissions, Federal requirements
AT4 Preferred Package
Rear sliding power window
LED roof marker lamps
Gooseneck Hitch Package
Gooseneck ball
Chain tiedown kit with case
AT4 Preferred Equipment Group includes standard equipment
AT4 Premium Plus Package
Technology Package
AT4 high clearance step
AT4 Preferred Package on AT4
Option/package discount
Trailering Information Label
LED Daytime Running Lamps
Signature LED Daytime Running Lamps
Hitch View
Shows a close-up view of the trailer hitch
Following Distance Indicator
Designed to help you maintain a safe following distance
Rear Seat Reminder
Forward Collision Alert
6 airbags
Dual-stage frontal airbags for driver and front outboard passenger
Head-curtain airbags for outboard seating positions
OnStar services capable
Safety Alert Seat
You can also switch to beeping crash avoidance alerts
Buckle to Drive
Trailering camera provisions
Includes connector for accessory wiring harness
Trailer Side Blind Zone Alert
OnStar Basics
Drive confidently with core OnStar services including
Remote commands
Built-in voice assistance
Real-time traffic and navigation
Automatic Crash Response to help if you're in need
Tire Pressure Monitoring System with Tire Fill Alert
Rear Cross Traffic Alert
Hitch Guidance
Can help you line up the hitch to your trailer
Seat Belt Adjustable Guide Loops
Front row only
Teen Driver
Front and Rear Park Assist
These can help you park and avoid collisions
Front Pedestrian Braking

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.

AutosXchange Intel

Vehicle price analysis

Live listings · within 250 miles of Gillette, Wyoming

Asking price$78,324Dealer asking price · 16 mi

Market value$87,029Market value · based on 7 comparable cars

vs. market Great deal-10.0%Great deal · based on 7 comparable cars

Where this price sits

Among the lowest-priced · 100% of 7 similar listings ask more than this car.

Market value $87,029

This car$78,324

$78,324lowest$88,229highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Great deal$8,705 below the market value of $87,029

Price range

$78,324$88,229

Lowest price of 8 similar listings within 250 milesTick marks the market value · range of 7 similar listings

AutosXchange Insights

Compared with 7 new 2026 GMC Sierra 3500 AT4 listings within 250 mi.
Priced $8,705 below the market value of 7 comparable cars.
Lowest price of 8 similar listings within 250 miles.
About 16 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # C26377 — mention it when you call or text.

How we calculate market value: comparable cars for sale now plus their last listed prices.

Cars this price is compared to

Same 2026 Sierra 3500 AT4 · new · within 250 miles of Gillette, Wyoming. All 7 comparable cars for sale, nearest first.

2026 GMC Sierra 3500 HD AT4 for sale at CASPER GMC CADILLAC in Casper, WY

Fair price

17 photos