2026 GMC Sierra 2500 HD Denali
- Used
The highlights
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
- Front dual zone A/C
The full specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start
- Remote keyless entry
- Speed control
- Surround View Monitor: HD Surround Vision w/Hitch View yes
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Genuine wood dashboard insert
- Genuine wood door panel insert
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 4-way driver lumbar support
- Power 4-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Cylinder configuration: V-8
- Drive type: four-wheel
- Electric motor 1 torque: none
- Electric motor horsepower: none
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid electric powertrain type: none
- Hybrid system combined power torque: none
- Hybrid system net power: none
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 256mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Door mirrors: chrome
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Tailpipe finisher: polished
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Engine displacement: 6.6 L
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,023mm (79.7")
- Exterior length: 6,776mm (266.8")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Turning radius: 8.7m (28.5')
- Wheelbase: 4,369mm (172.0")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Trailer Side Blind Zone Alert warning
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Traction control
Notes from the dealer
**FREE DELIVERY ANYWHERE IN COLORADO**
This 2026 GMC Sierra 2500HD Denali Reserve with Technology Package delivers commanding presence and refined capability in striking Onyx Black. Finished with a Jet Black interior featuring Kalahari accents and perforated leather-appointed front seats, this crew cab long bed combines luxury with serious truck functionality. Powered by a 6.6L V8 engine paired with a 10-speed automatic transmission and 4WD, it's engineered for both highway confidence and tough terrain performance.
Key features include:
- Multicolor 15" diagonal head-up display with advanced safety suite
- Premium Bose 7-speaker sound system with wireless phone projection and Apple CarPlay/Android Auto
- Heated and ventilated front seats with 12-way power adjustment and lumbar support
- Bed view camera with trailer provisions and surround vision
- Signature Chrome Denali grille with LED cargo and marker lighting
- Spray-on bedliner with GMC logo and all-weather floor liners
- Wireless charging and multiple USB charging ports
- Upfitter switch kit, engine block heater, and snow plow prep package
This well-maintained truck provides the perfect blend of capability and comfort for those who demand premium features in a work-ready platform. Contact us to arrange your test drive and experience this Sierra's commanding performance firsthand.
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Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
Disclaimer
Certified Pre-Owned GMC Trucks and SUVs Available at Mike Maroone GMC
At Mike Maroone GMC in Boulder, CO, investing in a certified pre-owned GMC vehicle is a wise choice. Each vehicle undergoes rigorous inspections to ensure functionality and value. If you're looking for a GMC truck near Broomfield, CO, or Longmont, CO, our current inventory of certified pre-owned vehicles is the perfect place to start your search.
In addition to our certified pre-owned inventory, we offer a wide selection of quality used vehicles. However, nothing beats the dependability and assurance of our certified pre-owned GMC inventory, which is highly sought after in Boulder, CO.
Possible GMC Models on the Lot
GMC's lineup includes both SUVs and trucks, and at Mike Maroone GMC, you might find models such as the Acadia, Yukon, Terrain, Sierra 1500, Sierra 2500, Sierra 3500, and Canyon. With multiple trim levels and occasional custom-ordered models, our selection caters to a wide range of preferences in Louisville, CO.
We welcome you to explore our inventory online or visit us in person at Mike Maroone GMC in Boulder, CO. While our online inventory provides a great start, visiting our dealership allows you to see more options, including vehicles not listed online. Our team is ready to show you similar vehicles to your online selections or guide you through our lot.
Experience our certified pre-owned GMC vehicles firsthand with a test drive. This is the best way to determine which vehicle suits you best. For financing options, visit our financing page, and check out our used inventory for more choices. Mike Maroone GMC in Boulder, CO, is committed to helping you find the ideal certified pre-owned vehicle.