Skip to main content
Skip to Filters
58 listings
    • Exterior color: Sterling MetallicSterling Metallic
    • Interior color: Jet Black leatherJet Black leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Sterling Metallic 2025 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. Pri...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UNEY3SF275640
    Stock: SF275640
    Listed since: 04-08-2025

    • Exterior color: Downpour MetallicDownpour Metallic
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Downpour Metallic 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY2SF287706
    Stock: SF287706
    Listed since: 04-22-2025

    • Exterior color: Onyx BlackOnyx Black
    • Interior color: Jet Black clothJet Black cloth
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Onyx Black 2025 GMC Sierra 2500HD SLE 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Black Cloth. Price includes: $1000 - Buick & ...

    Features and Specs:

    Listing Information:

    VIN: 1GT5UME79SF281027
    Stock: SF281027
    Listed since: 04-16-2025

    • Exterior color: Volcanic Red TintcoatVolcanic Red Tintcoat
    • Interior color: Jet Black w/Kalahari Accents leatherJet Black w/Kalahari Accents leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Volcanic Red Tintcoat 2025 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Le...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPE78SF347208
    Stock: SF347208
    Listed since: 07-10-2025

  • Advertisement

    4 Offers Nearby

    2025 GMC Sierra 2500HD
    $46,300
    starting MSRP
    • 6 Colors
    • 2 Trims
    • 10 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
    • Exterior color: Sterling MetallicSterling Metallic
    • Interior color: Jet Black w/Kalahari Accents leatherJet Black w/Kalahari Accents leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Sterling Metallic 2025 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kal...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY9SF341832
    Stock: SF341832
    Listed since: 07-15-2025

    • Exterior color: White Frost TricoatWhite Frost Tricoat
    • Interior color: Jet Black leatherJet Black leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! White Frost Tricoat 2025 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leathe...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UNEY8SF297228
    Stock: SF297228
    Listed since: 05-06-2025

    • Exterior color: Downpour MetallicDownpour Metallic
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Downpour Metallic 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREYXSF266263
    Stock: SF266263
    Listed since: 03-28-2025

    • Exterior color: Downpour MetallicDownpour Metallic
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Downpour Metallic 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY1SF266071
    Stock: SF266071
    Listed since: 03-28-2025

  • Advertisement

    4 Offers Nearby

    2025 GMC Sierra 2500HD
    $46,300
    starting MSRP
    • 6 Colors
    • 2 Trims
    • 10 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
    • Exterior color: Downpour MetallicDownpour Metallic
    • Interior color: Alpine Umber premium leatherAlpine Umber premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Downpour Metallic 2025 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Alpine...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UXEY8SF336315
    Stock: SF336315
    Listed since: 06-20-2025

    • Exterior color: Onyx BlackOnyx Black
    • Interior color: Alpine Umber premium leatherAlpine Umber premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Onyx Black 2025 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Alpine Umber ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UXEY2SF342515
    Stock: SF342515
    Listed since: 07-03-2025

    • Exterior color: Sterling MetallicSterling Metallic
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Sterling Metallic 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY2SF342395
    Stock: SF342395
    Listed since: 07-03-2025

    • Exterior color: Sterling MetallicSterling Metallic
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Sterling Metallic 2025 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Leather. ...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY2SF339786
    Stock: SF339786
    Listed since: 07-03-2025

  • Advertisement

    4 Offers Nearby

    2025 GMC Sierra 2500HD
    $46,300
    starting MSRP
    • 6 Colors
    • 2 Trims
    • 10 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
    • Exterior color: Summit WhiteSummit White
    • Interior color: Jet Black w/Kalahari Accents leatherJet Black w/Kalahari Accents leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Summit White 2025 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalahari...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY5SF347286
    Stock: SF347286
    Listed since: 07-10-2025

    • Exterior color: Downpour MetallicDownpour Metallic
    • Interior color: Alpine Umber premium leatherAlpine Umber premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Downpour Metallic 2025 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Alpine...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UXEYXSF297386
    Stock: SF297386
    Listed since: 05-20-2025

    • Exterior color: Summit WhiteSummit White
    • Interior color: Jet Black clothJet Black cloth
    • 8'2” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Summit White 2025 GMC Sierra 2500HD SLE 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Black Cloth. Price includes: $1000 - Buick ...

    Features and Specs:

    Listing Information:

    VIN: 1GT3UME72SF322833
    Stock: SF322833
    Listed since: 06-09-2025

    • Exterior color: White Frost TricoatWhite Frost Tricoat
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

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

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY1SF296803
    Stock: SF296803
    Listed since: 05-06-2025

  • Advertisement

    4 Offers Nearby

    2025 GMC Sierra 2500HD
    $46,300
    starting MSRP
    • 6 Colors
    • 2 Trims
    • 10 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
    • Exterior color: Summit WhiteSummit White
    • Interior color: Jet Black clothJet Black cloth
    • 8'2” bed, 6.6l, 8cyl
    • O'Meara GMC (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Denver, CO / 17 miles away from Boulder, CO

    New Price! Summit White 2025 GMC Sierra 2500HD SLE 4WD 10-Speed Automatic 6.6L V8 10-Speed Automatic, 4WD, Black Cloth. Price includes: $1000 - Buick ...

    Features and Specs:

    Listing Information:

    VIN: 1GT3UME78SF323923
    Stock: SF323923
    Listed since: 06-09-2025

    • Exterior color: Volcanic Red TintcoatVolcanic Red Tintcoat
    • Interior color: Jet Black leatherJet Black leather
    • 6'10” bed, 6.6l, 8cyl
    • AutoNation Buick GMC West (25 mi away)5 out of 5 stars(10)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Golden, CO / 25 miles away from Boulder, CO

    Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel Compatible,Slt Premium Package,Max Trailering Package,Wheels; 20" (50.8 Cm) Bright Face Wheels,Volcan...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UNEY1SF218398
    Stock: SF218398
    Listed since: 01-30-2025

    • Exterior color: Summit WhiteSummit White
    • Interior color: Jet Black clothJet Black cloth
    • 8'2” bed, 6.6l, 8cyl
    • AutoNation Buick GMC West (25 mi away)5 out of 5 stars(10)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Golden, CO / 25 miles away from Boulder, CO

    Gooseneck / 5Th Wheel Prep Package -- Hitch Platform To Accept Gooseneck Or 5Th Wheel Hitch.,Sle Convenience Package,Preferred Package,Remote Start Pa...

    Features and Specs:

    Listing Information:

    VIN: 1GT3UME75SF308778
    Stock: SF308778
    Listed since: 05-27-2025

    • Exterior color: White Frost TricoatWhite Frost Tricoat
    • Interior color: Jet Black premium leatherJet Black premium leather
    • 6'10” bed, 6.6l, 8cyl
    • AutoNation Buick GMC West (25 mi away)5 out of 5 stars(10)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Golden, CO / 25 miles away from Boulder, CO

    Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel Compatible,Denali Reserve Package,Max Trailering Package,White Frost Tricoat,Leather Seats,Navigation...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY4SF289442
    Stock: SF289442
    Listed since: 05-02-2025

  • New Listing
    • Exterior color: Summit WhiteSummit White
    • Interior color: Jet Black w/Kalahari Accents leatherJet Black w/Kalahari Accents leather
    • 6'10” bed, 6.6l, 8cyl
    • AutoNation Buick GMC West (25 mi away)5 out of 5 stars(10)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Golden, CO / 25 miles away from Boulder, CO

    Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel Compatible,Max Trailering Package,Technology Package,Sunroof; Power,Sun/Moonroof,Leather Seats,Naviga...

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY3SF205907
    Stock: SF205907
    Listed since: 08-05-2025

Showing 1 - 21 out of 58 listings

Consumer Reviews for the GMC Sierra 2500HD

Read recent reviews for the GMC Sierra 2500HD
Overall Consumer Rating
3.9 out of 5 stars29 Reviews
Write a vehicle reviewSee all 29 reviews
  • 5 star
    (62%)
  • 4 star
    (10%)
  • 3 star
    (0%)
  • 2 star
    (7%)
  • 1 star
    (21%)
1 out of 5 stars

2024 GMC Denali Ultimate

Justin Mullinax, 09/03/2023
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD LB (6.6L 8cyl Turbodiesel 10A)
I purchased and still have a 2024 GMC Denali Ultimate that I have had nothing but issues with since the second week of purchasing new. The truck left me and my family stranded in Walsenburg Colorado with only 1,253 miles on it. We called On Star to have a wrecker take it to the dealer. On Star wouldn’t send a wrecker because we had a 22’ utility trailer so we where out a wrecker bill. I … called Ferguson GMC where I purchased the vehicle from and left multiple messages for my salesman and the GM to see what my options were. I never received a call or text from either. One week after the day it broke down I did get a call back from the service manager MIKE GENOVESE . Mike informed me there was nothing they could do since it was already at another dealership. The truck was taken to Wilcoxson GMC in Pueblo Colorado where it sat for 6 weeks getting a new DPF filter and Pressure Differential Sensor. GM has still been unwilling to compensate for the 6 weeks of being with our primary vehicle used for work. We literally had to purchase another New GMC from Wilcoxson to get home as there where no loaner vehicles available. When our 2024 GMC showed up at our house through GM reunite program it had 680 miles more than when it was delivered to the dealership and there was no diesel or def fluid in the truck. We finally got a reimbursement check for the hotel room we had to get for 2 nights waiting for the dealership to open. I wouldn’t recommend buying anything from General Motors as they don’t stand behind anything. I have spent over 40 hours trying to get a fair compensation or Buy Back from GM and have yet to get anywhere with them. I was told they would Repurchase it and was told to get in contact with MIKE GENOVESE the service manager at Ferguson GMC in Norman Oklahoma. I called Mike to schedule a time to bring it in for the Buy Back and he didn’t know anything about it. So I called Shaun Gusumano back and he assured me Mike was brought up to speed and would be handling it. Once again I called Mike and still isn’t aware. If you are having any issues with getting ahold of GM please let Shaun know as he is not taking care of my issues. [contact info removed]
Report abuse
TrimMPGEngineStarting Price
2025 GMC Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)N/A8-cylinders (diesel)$84,175
2025 GMC Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)N/A8-cylinders (diesel)$89,310
2025 GMC Sierra 2500HD SLE 4dr Double Cab 4WD SB (6.6L 8cyl 10A)N/A8-cylinders (gas)$60,075
2025 GMC Sierra 2500HD AT4 4dr Crew Cab 4WD SB (6.6L 8cyl 10A)N/A8-cylinders (gas)$78,850
2025 GMC Sierra 2500HD AT4 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)N/A8-cylinders (diesel)$86,670
2025 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)N/A8-cylinders (diesel)$97,960
2025 GMC Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.6L 8cyl 10A)N/A8-cylinders (gas)$57,680

More about the GMC Sierra 2500HD

Edmunds has 58 New GMC Sierra 2500HDs for sale near you, including a 2025 Sierra 2500HD SLE Pickup and a 2025 Sierra 2500HD Denali Ultimate Pickup ranging in price from $57,680 to $97,960.

How much is a new 2025 GMC Sierra 2500HD in Boulder, CO?

A new 2025 GMC Sierra 2500HD starts at $57,680 (including destination charge) in Boulder, CO. Prices will go up based on the trim level you choose and any options you add. Keep in mind that prices can also vary from one state to another and even from one dealership to the next.

How much does a 2025 GMC Sierra 2500HD Crew Cab cost in Boulder, CO?

A new 2025 GMC Sierra 2500HD Crew Cab starts at $78,850 in Boulder, CO. Prices will vary depending on what trim level you choose. Each state may have different pricing, so make sure you enter your correct ZIP code on Edmunds.
Other versions include:
2025 GMC Sierra 2500HD Double Cab which starts at $60,075.
Filters
Skip to Results

Applied Filters3Active

Location

Search radius50 miles
Search radius

Make & Model

Year

New / Used

Price & Payments

Price Rating

Trim

Truck Details

Engine & Drivetrain

Exterior Color

Interior Color

Total Seating

Edmunds Review

Features

Options & Packages

Listing Details


* Delivery of any kind does not apply to Alaska and Hawaii. Contact the dealer for delivery details, restrictions and costs.