CASPER GMC CADILLAC · Casper, WY

2026 GMC Sierra 2500 HD SLT

0 miles · truck

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PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 2500 HD

TrimSLT

VIN1GT4UNE7XTF420505

Stock numberG7550

BodyPickup

Engine6.6L 8-cyl

Cylinders8

Displacement6.6L

Horsepower401

TransmissionAutomatic

Drivetrain4WD

FuelGasoline

ExteriorVolcanic Red Tintcoat

InteriorJet Black, Perforated Leather-appointed front outb

Doors4

Towing16000

Vehicle description

Vehicle Details Built for serious work and refined driving, this 2026 GMC Sierra 2500 SLT 4WD delivers the strength, technology, and comfort drivers want in a heavy-duty truck. Powered by a robust V8 6.6L Gasoline engine, it is engineered to handle demanding towing, hauling, and everyday tasks with confidence. The SLT trim adds a premium touch with upscale materials, smart convenience features, and a confident presence on the road. Inside, you'll find Hands Free Bluetooth for safer connectivity, XM Radio for endless entertainment, and a BOSE Stereo that brings rich, premium sound to every drive. Remote Start adds convenience in changing weather, while Cross-Traffic Alert provides extra awareness when backing out of parking spaces or maneuvering in tight areas. With 4WD capability, this GMC Sierra 2500 is ready for Wyoming roads, job sites, and weekend adventures alike. Located in Casper, WY, this GMC Sierra 2500 SLT offers the durability of a heavy-duty pickup with the comfort and technology expected from a modern full-size truck. If you are looking for a dependable 2026 GMC Sierra 2500 in Casper, Wyoming, this is a compelling choice for work, recreation, and long-distance confidence. Explore capability, comfort, and advanced features in one powerful package today. Equipment This model offers Android Auto for seamless smartphone integration. This vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Apple CarPlay: Seamless smartphone integration for this unit - stay connected and entertained on the go! The steering wheel audio controls on this vehicle keep the volume and station within easy reach. Keep your hands warm all winter with a heated steering wheel in the GMC Sierra . This unit has auto-adjust speed for safe following. See what's behind you with the back up camera on this unit. This 2026 GMC Sierra 2500 warns of approaching vehicles with Cross-Traffic Alert. Engulf yourself with the crystal clear sound of a BOSE sound system in it. The GMC Sierra features a hands-free Bluetooth phone system. Never get into a cold vehicle again with the remote start feature on the vehicle. An off-road package is equipped on this model. Packages SLT Convenience Package: Ventilated Driver and Front Passenger Seats; Bose Premium 7-Speaker Sound System; 2 Charge/data USB Ports Inside Center Console; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Front Bucket Seats. X31 Off-Road and Protection Package: 20" Bright Face Wheels with Dark Painted Pockets; LT275/65R20 AT BW Tires; Spray-On Pickup Bedliner with GMC Logo; All-Weather Floor Liners. X31 Off-Road Package: Off-Road Suspension; Hill Descent Control; Skid Plates. Sierra HD Pro Safety Plus Package: HD Surround Vision; Trailer Side Blind Zone Alert; Rear Cross Traffic Alert; Ultrasonic Front and Rear Park Assist; Safety Alert Seat; Trailer Cam Provisions and Trailer Viewing Software; Bed View Camera with Two Trailer Camera Provisions. Preferred Equipment Group 4SA: LED Cargo Area Lighting; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Electric Rear-Window Defogger; Chrome Surround Grille with Chrome Insert Bars; Unauthorized Entry Theft-Deterrent System; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; 2 Charge/data USB Ports; Steering Wheel Audio Controls; 2 Charg

Features & options (168)

Basic
Corrosion
Maintenance
Roadside Assistance
Max seating capacity
Fuel System
Fuel tank capacity
Horsepower
Towing capacity
13.4" diagonal GMC Premium Infotainment System with Google built-in
Bluetooth
Bose Premium Sound System
SiriusXM with 360L Trial Subscription
Wi-Fi Hotspot capable
Wireless phone projection
18" LT275/70R18 all-terrain, blackwall spare tire
20" Bright face wheels with dark painted pockets
20" LT275/65R20 all-terrain, blackwall tires
6" Chrome assist steps
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Cab-mounted cargo area lamps
Cargo bed LED lighting
Cargo tie-downs
Chrome beltline moldings
Chrome door handles
Chrome front bumper
Chrome mirror caps
Chrome rear bumper
CornerStep rear bumper
Deep-tinted glass
Front license plate bracket
GMC MultiPro Tailgate
IntelliBeam
LED fog lamps
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass
Rainsense automatic wipers
Rear wheelhouse liners
Side Bed Step
Smoked Amber LED roof marker lamps
Spare tire carrier lock
Spray-on bedliner
Tailgate and bed rail protection caps
Tailgate with EZ Lift assist, power lock & release
10-way power driver seat with power lumbar
10-way power front passenger seat
12.3" diagonal color Driver Information Center
120-volt box-mounted power outlet
120-volt power outlet
Adaptive Cruise Control
All-weather floor liners
Assist handles
Carpeted floor covering
Compass
Driver memory
Dual-zone automatic climate control
Front bucket seats
Front carpeted floor mats
Front center console
Heated driver and front outboard passenger seats
Heated rear outboard seats
Heated steering wheel
Inside rearview auto-dimming mirror
Keyless Open and Start
Manual tilt and telescoping steering column
Outside temperature display
Power door locks
Power sliding rear window with rear defogger
Power windows with driver and front passenger express-up/down
Power windows with driver express-up/down
Power windows with rear express-down
Rear Seat Reminder
Rear air vents
Rear carpeted floor mats
Rear window defogger
Remote Start
Steering-wheel mounted controls
Theft-deterrent unauthorized entry system
USB ports
Universal Home Remote
Up-level rear seat with storage package
Ventilated driver and front passenger seats
Wireless Charging
Wrapped steering wheel
10,850 lbs. GVWR
10-speed automatic transmission
170-amp alternator
3.73 rear axle ratio
4-wheel antilock disc brakes
6.6L V8 Gas engine
Air filtration monitoring
Automatic locking rear differential
Brake pad wear indicator
Capless fuel fill
Digital Variable Steering Assist
External auxiliary transmission oil cooler
External engine oil cooler
Fully boxed frame
Gooseneck / 5th Wheel Prep Package
Heavy-Duty Air Filter
Heavy-duty 720 cold-cranking amps battery
Hill Descent Control
In-Vehicle Trailering App
Integrated trailer brake controller
Off-Road suspension
Skid plates
LED Daytime Running Lamps
Signature LED Daytime Running Lamps
6 airbags
Bed View Camera
Buckle to Drive
Following Distance Indicator
Forward Collision Alert
Front and Rear Park Assist
HD Surround Vision
Hitch Guidance
Hitch View
Lane Departure Warning
OnStar Basics
OnStar services capable
Rear Cross Traffic Alert
Rear Seat Belt Indicator
Safety Alert Seat
Seat Belt Adjustable Guide Loops
Teen Driver
Tire Pressure Monitoring System with Tire Fill Alert
Trailer Side Blind Zone Alert
Trailering Information Label
Trailering camera provisions
Automatic Emergency Braking
Front Pedestrian Braking
StabiliTrak, electronic stability control system with traction control
Assist Step and Floor Liner Package:
Gooseneck Hitch Package:
Gooseneck ball
Chain tiedown kit with case
May require additional optional equipment
SLT Convenience Package:
Bucket seats
Center console
Ventilated front seats
USB ports in center console
LED roof marker lamps
Bose Premium Sound System with Richbass woofer
SLT Preferred Package:
Power rear sliding window
Sierra HD Pro Safety Plus Package:
Bed View Camera (Crew Cab and Double Cab models)
HD Surround Vision (Crew Cab and Double Cab models)
Trailer Camera Provisions (Crew Cab and Double Cab models)
Rear Park Assist on SLE models
In Vehicle Trailering App on SLE models
Safety Alert Seat on SLT
X31 Off-Road Package:
Twin-tube Rancho shocks
X31 hard badge
X31 Off-Road and Protection Package:
Off-Road suspension with Twin-tube Rancho shocks
Skid plates (transfer case and oil pan)
X31 badge (replaces "4X4" badge on bed)
Assist Step and Floor Liner Package
Gooseneck Hitch Package
SLT Convenience Package
SLT Preferred Package
Sierra HD Pro Safety Plus Package
X31 Off-Road Package
X31 Off-Road and Protection Package
Front and rear park assist

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 Casper, Wyoming

Asking price$73,830Dealer asking price

Market value$73,220Market value · based on 9 comparable cars

vs. market Fair price+0.8%Fair price · based on 9 comparable cars

Where this price sits

In the typical middle range · 33% of 9 similar listings ask more than this car.

Market value $73,220

This car$73,830

$69,300lowest$80,047highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Fair price$610 above the market value of $73,220

Price range

$69,300$80,047

7th lowest price of 10 similar listings within 250 milesTick marks the market value · range of 9 similar listings

AutosXchange Insights

Compared with 9 new 2026 GMC Sierra 2500 SLT listings within 250 mi.
Priced $610 above the market value of 9 comparable cars — compare options, condition and history.
7th lowest price of 10 similar listings within 250 miles.
Stock # G7550 — mention it when you call or text.

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

Price history

Price tracked by AutosXchange since Nov 8, 2026. No price change at this dealership since Nov 8 ($73,830).0 price changes at this dealership: $73,830 → $73,830.

AutosXchange Intel Hub: Price changes for this model in Wyoming · This model in the Intel Hub · Market movers in Wyoming

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 11); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.

Cars this price is compared to

Same 2026 Sierra 2500 SLT · new · within 250 miles of Casper, Wyoming. All 9 comparable cars for sale, nearest first.

2026 GMC Sierra 2500 HD SLT for sale at CASPER GMC CADILLAC in Casper, WY

Good deal

23 photos