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O'Meara GMC · Thornton, CO

2025 GMC Sierra 2500 HD AT4

32,138 miles · truck

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2025
MakeGMC
ModelSierra 2500 HD
TrimAT4
VIN
Stock numberMP8660
Mileage32,138 miles
BodyPickup
Engine6.6L V8 turbo
Cylinders8
Displacement6.6L
TransmissionAutomatic
Drivetrain4WD
FuelDiesel
ExteriorSterling Metallic
InteriorJet Black with Kalahari accents, Perforated Front
Doors4

Vehicle description

CARFAX 1-Owner, Superb Condition. Sterling Metallic exterior and Jet Black with Kalahari accents interior, AT4 trim. Serviced here. AFFORDABLE Reduced from $67,588. This Sierra 2500HD is priced $6,000 below Kelley Blue Book. KEY FEATURES INCLUDE Leather Seats, 4x4, Heated Driver Seat, Heated Rear Seat, Cooled Driver Seat, Back-Up Camera, Running Boards, Premium Sound System, Satellite Radio, Onboard Communications System. Keyless Entry, Privacy Glass, Steering Wheel Controls, Heated Mirrors. OPTION PACKAGES ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.), AUDIO SYSTEM, 13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto® and Apple CarPlay® capability for compatible phones (STD), TRANSMISSION, ALLISON 10-SPEED AUTOMATIC. EXCELLENT SAFETY FOR YOUR FAMILY Cross-Traffic Alert, Blind Spot Monitor, Electronic Stability Control, 4-Wheel ABS, 4-Wheel Disc Brakes, Tire Pressure Monitoring System GMC AT4 with Sterling Metallic exterior and Jet Black with Kalahari accents interior features a 8 Cylinder Engine with 470 HP at 2800 RPM*. SHOP WITH CONFIDENCE CARFAX 1-Owner Pricing analysis performed on 11/6/2026.

Features & options (132)

  • 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" LT275/65R20 all-terrain, blackwall tires
  • 20" high gloss Black aluminum wheels
  • Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
  • Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
  • Black beltline moldings
  • Body-color door handles
  • Body-color front bumper
  • Body-color rear bumper
  • Cab-mounted cargo area lamps
  • Cargo bed LED lighting
  • Cargo tie-downs
  • CornerStep rear bumper
  • Deep-tinted glass
  • Front license plate bracket
  • GMC MultiPro Tailgate
  • High gloss Black mirror caps
  • 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
  • Spare tire carrier lock
  • Spray-on bedliner
  • Tailgate and bed rail protection caps
  • Tailgate with EZ Lift assist, power lock & release
  • Winter Grille Cover
  • 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
  • Assist handles
  • Carpeted floor covering
  • Compass
  • Driver memory
  • Dual-zone automatic climate control
  • Front bucket seats
  • 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 windows with driver and front passenger express-up/down
  • Power windows with driver express-up/down
  • Power windows with rear express-down
  • Premium front floor liners with removable carpet insert
  • Premium rear floor liners with removable carpet insert
  • Rear Seat Reminder
  • Rear air vents
  • Rear window defogger
  • Remote Start
  • Steering-wheel mounted controls
  • Theft-deterrent unauthorized entry system
  • USB ports
  • Up-level rear seat with storage package
  • Ventilated driver and front passenger seats
  • Wireless Charging
  • Wrapped steering wheel
  • 11,350 lbs. GVWR
  • 220-amp alternator
  • 3.42 rear axle ratio
  • 4-wheel antilock disc brakes
  • 6.6L Duramax Turbo-Diesel V8 engine
  • Air filtration monitoring
  • Allison 10-speed automatic transmission
  • Automatic locking rear differential
  • Autotrac 2-speed transfer case with push button controls
  • Brake pad wear indicator
  • Capped fuel fill
  • Diesel exhaust brake
  • Digital Variable Steering Assist
  • Engine block heater
  • External auxiliary transmission oil cooler
  • External engine oil cooler
  • Fully boxed frame
  • Heavy-Duty Air Filter
  • Heavy-duty dual batteries with 1460 cold-cranking amps
  • Hill Descent Control
  • In-Vehicle Trailering App
  • Integrated trailer brake controller
  • Off-Road suspension
  • Pickup bed
  • Push Button Start
  • Red vertical recovery hooks
  • 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
  • ProGrade Trailering System
  • Sierra HD Pro Safety
  • Trailering Package

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 50 miles of Thornton, Colorado
Asking price$65,496Dealer asking price · 32,138 mi
Market value$68,223Market value · based on 5 comparable cars
vs. market Fair price-4.0%Fair price · based on 5 comparable cars

Where this price sits

Among the lowest-priced · 80% of 5 similar listings ask more than this car.

$60,990lowest$76,895highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

-4.0%
−25%Market value+25%
Fair price$2,727 below the market value of $68,223

Price range

$65,496
$60,990$76,895
2nd lowest price of 6 similar listings within 50 milesTick marks the market value · range of 5 similar listings

AutosXchange Insights

  • Compared with 5 used 2025–2026 GMC Sierra 2500 AT4 listings within 50 mi.
  • Priced $2,727 below the market value of 5 comparable cars.
  • 2nd lowest price of 6 similar listings within 50 miles.
  • Has about 3,000 fewer miles than similar listings.
  • About 16,069 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # MP8660 — 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 9, 2026. No price change at this dealership since Nov 9 ($65,496).

$65.2k$65.3k$65.4k$65.5k$65.6k$65.7kNov 9Nov 10Nov 11Nov 12Nov 13

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

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 13); 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 2025–2026 Sierra 2500 AT4 · used · any miles · within 50 miles of Thornton, Colorado. All 5 comparable cars for sale, nearest first.

AutosXchange Intel uses current dealer-advertised asking prices, not completed sales or appraisals. It compares the same trim and condition (new or used) where at least three are listed nationwide, and adjusts the expected price for mileage; it is not adjusted for options, condition or accident history. Similar listings are searched within 50, 100 and 250 miles of the dealer first, then the dealer's state, then nationwide. The left gauge spans ±25% of the expected price. How AutosXchange price analysis works

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