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All GMC Inventory in Colorado: Shop All New & Used GMC Inventory

Showing 32 Results
    $95,754
    $87,894
    StatusAvailable
    LocationBoulder, CO
    Stock #DT153324

    White Frost Tricoat 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black L... READ MORE

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    Odometer2854
    InteriorJet Black Leather
    Interior ColorJet Black
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourWhite Frost Tricoat
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $89,940
    $83,625
    StatusAvailable
    LocationLongmont, CO
    Stock #111147

    Summit White 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalaha... READ MORE

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    Odometer6
    Interior ColorJet Black With Kalahari Accents
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleLong Bed
    Body Door Ct4
    Wheelbase172
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $82,305
    $76,181
    StatusAvailable
    LocationBoulder, CO
    Stock #G168537

    Volcanic Red Tintcoat 2025 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Le... READ MORE

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    Odometer3993
    InteriorJet Black Leather
    Interior ColorJet Black
    Interior MaterialLeather
    Exterior Base ColorRed
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Body Roof StyleTarga
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $90,135
    $84,596
    StatusAvailable
    LocationLongmont, CO
    Stock #151711

    Summit White 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalaha... READ MORE

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    Odometer6
    Interior ColorJet Black With Kalahari Accents
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $97,855
    $92,378
    StatusAvailable
    LocationLongmont, CO
    Stock #L162346

    Summit White 2026 GMC Sierra 2500HD AT4X 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Obsidian Rush Leathe... READ MORE

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    Odometer6
    Interior ColorObsidian Rush
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $99,460
    $94,005
    StatusAvailable
    LocationLongmont, CO
    Stock #139517

    Glacier White Tricoat 2026 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, ... READ MORE

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    Odometer5
    Interior ColorAlpine Umber
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourGlacier White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $82,155
    $76,792
    StatusAvailable
    LocationBoulder, CO
    Stock #G168059

    Onyx Black 2025 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather, 10-W... READ MORE

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    Odometer247
    InteriorJet Black Leather
    Interior ColorJet Black
    Interior MaterialLeather
    Exterior Base ColorBlack
    ColourOnyx Black
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Body Roof StyleTarga
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $98,365
    $93,007
    StatusAvailable
    LocationLongmont, CO
    Stock #137262

    Summit White 2026 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Alpine Um... READ MORE

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    Odometer5
    Interior ColorAlpine Umber
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $54,545
    $52,451
    StatusAvailable
    LocationLongmont, CO
    Stock #L164245

    Summit White 2026 GMC Sierra 2500HD Pro 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Jet Black Vinyl.Proudly serving Longmont,... READ MORE

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    Odometer7
    InteriorJet Black Vinyl
    Interior ColorJet Black
    Interior MaterialVinyl
    Exterior Base ColorWhite
    ColourSummit White
    Body2D Standard Cab
    Body Bed StyleLong Bed
    Body Door Ct2
    Wheelbase142
    Engine6.6L V8
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelGasoline
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $89,240
    $87,240
    StatusAvailable
    LocationBoulder, CO
    Stock #G112544

    Sterling Metallic 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With K... READ MORE

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    Odometer7
    Interior ColorJet Black With Kalahari Accents
    Interior MaterialLeather
    Exterior Base ColorSilver
    ColourSterling Metallic
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $79,420
    $77,720
    StatusAvailable
    LocationBoulder, CO
    Stock #G160584

    Summit White 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Jet Black W/ Kalahari Leather.GMC Dealers... READ MORE

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    Odometer64
    Interior ColorJet Black W/ Kalahari
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine6.6L V8
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelGasoline
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $88,745
    $87,045
    StatusAvailable
    LocationBoulder, CO
    Stock #G140367

    Summit White 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalaha... READ MORE

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    Odometer7
    Interior ColorJet Black With Kalahari Accents
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $90,435
    $89,185
    StatusAvailable
    LocationLongmont, CO
    Stock #L201861

    Onyx Black 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black W/ Kalahari L... READ MORE

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    Odometer5
    Interior ColorJet Black W/ Kalahari
    Interior MaterialLeather
    Exterior Base ColorBlack
    ColourOnyx Black
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $59,025
    $57,775
    StatusAvailable
    LocationLongmont, CO
    Stock #L184946

    Summit White 2026 GMC Sierra 2500HD Pro 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Jet Black Vinyl.Proudly serving Longmont,... READ MORE

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    Odometer6
    InteriorJet Black Vinyl
    Interior ColorJet Black
    Interior MaterialVinyl
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine6.6L V8
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelGasoline
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $98,500
    $97,250
    StatusAvailable
    LocationLongmont, CO
    Stock #L197577

    Volcanic Red Tintcoat 2026 GMC Sierra 2500HD AT4X 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Obsidian Ru... READ MORE

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    Odometer5
    Interior ColorObsidian Rush
    Interior MaterialLeather
    Exterior Base ColorRed
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $85,270
    $84,020
    StatusAvailable
    LocationLongmont, CO
    Stock #LF167657

    Summit White 2026 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather.Pro... READ MORE

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    Odometer6
    InteriorJet Black
    Interior ColorJet Black
    Interior MaterialLeather
    Exterior Base ColorWhite
    ColourSummit White
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $85,530
    $84,280
    StatusAvailable
    LocationLongmont, CO
    Stock #L185178

    Sterling Metallic 2026 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leathe... READ MORE

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    Odometer5
    InteriorJet Black Leather
    Interior ColorJet Black
    Interior MaterialLeather
    Exterior Base ColorGray
    ColourSterling Metallic
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Body Roof StyleTarga
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $89,240
    $87,990
    StatusAvailable
    LocationBoulder, CO
    Stock #G149735

    Titanium Rush Metallic 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black W... READ MORE

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    Odometer7
    Interior ColorJet Black With Kalahari Accents
    Interior MaterialLeather
    Exterior Base ColorGray
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $99,585
    $98,335
    StatusAvailable
    LocationBoulder, CO
    Stock #G122564

    Glacier White Tricoat 2026 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, ... READ MORE

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    Odometer7
    Interior ColorAlpine Umber
    Interior MaterialLeather
    Exterior Base ColorWhite
    Body4D Crew Cab
    Body Bed StyleShort Bed
    Body Door Ct4
    Wheelbase159
    Engine AspirationTurbocharged
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelDiesel
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4
    $53,645
    $52,449
    StatusAvailable
    LocationBoulder, CO
    Stock #G354422

    Summit White 2025 GMC Sierra 2500HD Pro 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Black Cloth.GMC Dealership Serving Boulde... READ MORE

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    Odometer7
    InteriorCloth
    Interior ColorBlack
    Interior MaterialCloth
    Exterior Base ColorWhite
    ColourSummit White
    Body2D Standard Cab
    Body Bed StyleLong Bed
    Body Door Ct2
    Wheelbase142
    Engine6.6L V8
    Engine CamshaftOHV
    Engine Cylinder Ct8
    Engine Displacement6.6
    FuelGasoline
    Transmission10-Speed Automatic
    Transmission Gear Ct10
    Transmission TypeAutomatic
    Drivetrain Desc4WD
    Drivetrain Type4WD
    Drivetrain Wheel Ct4

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Dive into the expansive lineup of GMC vehicles available at Mike Maroone Colorado, where performance meets luxury in every model. Whether you're interested in conquering the rugged terrains of Colorado with a sturdy vehicle or you need a dependable ride for your daily commutes, our range includes both GMC SUVs and trucks tailored to meet diverse driving needs in Colorado. Those in search of state-of-the-art features and pristine condition will find our new GMC SUVs for sale perfectly aligning with their expectations, while budget-conscious consumers looking for a reliable vehicle at a reduced price will appreciate the value in our used GMC SUVs for sale in Colorado.

  • Choosing the right vehicle in Colorado involves more than just finding a good deal. Rather, it requires understanding the nuances of each model's capabilities and how they align with your lifestyle. Exploring our GMC lineup at Mike Maroone Colorado allows you to experience first-hand the superior handling and advanced features of our new GMC trucks for sale. For those in Colorado considering a pre-owned option, our used GMC trucks for sale have been meticulously inspected to ensure they meet your high standards and ours, providing you with peace of mind and a vehicle that’s ready to tackle anything Colorado can throw its way.

  • At Mike Maroone Colorado, we recognize that choosing between a new and used GMC SUV for sale can significantly impact your driving experience. Buying a new GMC SUV for sale or truck offers the latest in technology, efficiency, and features, along with the reassurance of a full manufacturer's warranty. These vehicles are ideal for Colorado drivers seeking cutting-edge design and peace of mind in knowing their vehicle has no prior history. Alternatively, opting for a used GMC truck for sale from our inventory can be a savvy financial decision. These vehicles offer considerable savings and have undergone rigorous inspections to ensure they meet our high standards of quality and performance. No matter if you choose a pristine new GMC SUV or a robust used GMC truck, you'll benefit from our comprehensive support and service in Colorado. Our commitment to ensuring your GMC operates at peak performance extends well beyond the initial sale. With access to top-tier maintenance and repair services from our expert team, every GMC owner in Colorado can enjoy a seamless ownership experience. Reliable support from Mike Maroone Colorado is just a phone call away, ensuring your GMC SUV or new GMC truck for sale continues to meet your needs through every mile.