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621 listings
  • New Listing
    $55,569
    fair price
    $1,555 above market
    • 37,314 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Garber Buick GMC of Ft Pierce (72 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Fort Pierce, FL / 72 miles away from Boca Raton, FL

    SAVE NOW DURING GARBER PRE-OWNED Sales Event! CARFAX One-Owner. Clean CARFAX. CLEAN CARFAX/1 OWNER, BACKUP CAMERA, BED LINER, BLIND SPOT MONITOR, BLUE...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49NEY7MF183290
    Stock: 7183290T
    Certified Pre-Owned: No
    Listed since: 02-15-2025

  • New Listing
    $38,990
    fair price
    $667 below market
    • 75,272 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Greenwood Chevrolet (140 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Fort Meade, FL / 140 miles away from Boca Raton, FL

    This 2023 GMC Crew Cab 4x4 Sierra 2500HD Pro is a state-of-the-art motorcar. It has driven 75,272 miles and is powered by a 6.6 liter 8 cylinder engin...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49LE70PF132794
    Stock: S1233A
    Certified Pre-Owned: No
    Listed since: 05-28-2025

  • New Listing
    $83,500
    fair price
    $1,117 above market
    • 10,267 miles
    • 1 accident, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Sarasota Ford (161 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Sarasota, FL / 161 miles away from Boca Raton, FL

    Prices are Plus tax, tag, title fee, $1199 Pre-Delivery Service Charge, and $299 Electronic Filing Fee.FACTORY CERTIFIED BLUE ADVANTAGE! 3 MONTH/4,000...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY0SF156570
    Stock: SF156570
    Certified Pre-Owned: No
    Listed since: 05-29-2025

  • New Listing
    $68,590
    fair price
    $3,078 above market
    • 25,479 miles
    • No accidents, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Memphis, TN / 837 miles away from Boca Raton, FL

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49PEYXPF127859
    Stock: 2003671051
    Certified Pre-Owned: No
    Listed since: 04-25-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    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.
  • Price Drop
    $63,991
    fair price
    $1,661 above market
    • 57,561 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Conley Subaru (167 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Bradenton, FL / 167 miles away from Boca Raton, FL

    This Hunter Metallic 2023 GMC Sierra 2500HD Denali 4WD is well equipped and includes these features and benefits:.GMC CERTIFIED**, CLEAN CARFAX-NO ACC...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY9PF169323
    Stock: G265344A
    Certified Pre-Owned: No
    Listed since: 05-11-2025

  • $52,490
    fair price
    $449 above market
    • 105,047 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • North Miami Mitsubishi (28 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Miami Gardens, FL / 28 miles away from Boca Raton, FL

    2021 GMC Sierra 2500HD Denali Silver 4D Crew Cab Duramax 6.6L V8 Turbodiesel10-Speed Automatic, 4WD, Black Leather.Clean CARFAX.STOP OVERPAYING...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT19REY0MF250886
    Stock: 250886C01
    Certified Pre-Owned: No
    Listed since: 02-14-2025

  • $53,991
    fair price
    $1,724 above market
    • 96,350 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Plaza Chrysler Jeep Dodge Ram (218 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Inverness, FL / 218 miles away from Boca Raton, FL

    2021 GMC Sierra 2500HD AT4The Plaza Promise: We create Value beyond the sale that happens today by helping to positively empower the community and ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49PEY4MF318589
    Stock: CD1618
    Certified Pre-Owned: No
    Listed since: 05-06-2025

  • New Listing
    $51,990
    fair price
    $288 above market
    • 42,441 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Columbus, OH / 956 miles away from Boca Raton, FL

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49MEY0PF215267
    Stock: 2003672722
    Certified Pre-Owned: No
    Listed since: 05-05-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    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.
  • New Listing
    $55,998
    fair price
    $558 above market
    • 48,355 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 6'10” bed, 6.6l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from CA to FL*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Murrieta, CA / 2,260 miles away from Boca Raton, FL

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49MEY5PF149539
    Stock: 27093585
    Certified Pre-Owned: No

  • New Listing
    $60,295
    fair price
    $1,776 below market
    • 71,416 miles
    • 1 accident, 3 owners, corporate fleet vehicle
    • 6'10” bed, 6.6l, 8cyl
    • Jacobs Mitsubishi (206 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in New Port Richey, FL / 206 miles away from Boca Raton, FL

    Check out this 2021 GMC Sierra 2500HD Denali finished in Pacific Blue Metallic with a Dark Walnut/Dark Ash Grey interior. This vehicle is equipped wit...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY0MF144029
    Stock: K144029
    Certified Pre-Owned: No
    Listed since: 05-29-2025

    • 35 miles
    • No accidents, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Starling GMC (161 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Titusville, FL / 161 miles away from Boca Raton, FL

    Onyx Black 2025 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Alloy Wheels, Convenience Package, Heavy Duty Trailer Package...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY9SF218063
    Stock: 218063E
    Certified Pre-Owned: No
    Listed since: 05-02-2025

    • 887 miles
    • No accidents, 1 owner, personal use only
    • Gibson Truck World (181 mi away)
    • Upgraded Engine
    Close

    Located in Sanford, FL / 181 miles away from Boca Raton, FL

    $10,995 6.6L Duramax Turbo-Diesel Engine, $2,365 Denali Reserve Package, $1,725 Power Running Boards, $630 Gooseneck/5th Wheel Prep, 15-DAY Exchange P...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT4UREY8SF214355
    Stock: 47002
    Certified Pre-Owned: No
    Listed since: 05-07-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    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.
  • New Listing
    • 3,263 miles
    • No accidents, 1 owner, personal use only
    • Gibson Truck World (181 mi away)
    • Upgraded Engine
    Close

    Located in Sanford, FL / 181 miles away from Boca Raton, FL

    $10,995 6.6L Duramax Turbo-Diesel Engine, $1,540 Technology Package, $1,325 Power Sunroof, $515 AT4 Preferred Package, $240 High Idle Switch, 15-DAY E...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT1UPEY8SF104655
    Stock: 47050
    Certified Pre-Owned: No
    Listed since: 05-29-2025

  • New Listing
    • 8,694 miles
    • No accidents, personal use only
    • Gibson Truck World (181 mi away)
    • Upgraded Engine
    Close

    Located in Sanford, FL / 181 miles away from Boca Raton, FL

    $10,995 6.6L Duramax Turbo-Diesel Engine, $3,850 AT4 Premium Plus Package, $1,775 Max Trailer Package, $265 Dual Alternators, $175 Upfitter Switches, ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT4UPEY2SF102316
    Stock: 47057
    Certified Pre-Owned: No
    Listed since: 05-31-2025

  • Stock photo**
    $65,890
    fair price
    $2,812 above market
    • 57,389 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Daniels Chevrolet (451 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Swainsboro, GA / 451 miles away from Boca Raton, FL

    This GMC Sierra 2500HD delivers a Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission. WINTER GRILLE COVER, WHEELS, 20" (50.8 CM)...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49PEYXPF237164
    Stock: 232730A
    Certified Pre-Owned: No
    Listed since: 05-24-2025

  • Stock photo**
    • 36,973 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • David Scott Lee Buick GMC (492 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Crestview, FL / 492 miles away from Boca Raton, FL

    CARFAX One-Owner. Certified. Hunter Metallic 2023 GMC Sierra 2500HD Denali Duramax 6.6L V8 Turbodiesel 4WD **GM Certified Pre-Owned**, **Sunroof/Moonr...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY3PF184786
    Stock: 25711A
    Certified Pre-Owned: Yes
    Listed since: 05-23-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    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.
  • $63,990
    fair price
    $154 above market
    • 77,220 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • David Scott Lee Buick GMC (492 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Crestview, FL / 492 miles away from Boca Raton, FL

    CARFAX One-Owner. White Frost Tricoat 2023 GMC Sierra 2500HD Denali Duramax 6.6L V8 Turbodiesel 4WD **Sunroof/Moonroof*, **Leather**, Backup Camera, B...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY0PF237962
    Stock: 25475A
    Certified Pre-Owned: No
    Listed since: 05-17-2025

  • Price Drop
    • 30,604 miles
    • No accidents, 1 owner, personal use only
    • Kelley Buick GMC of Bartow (149 mi away)
    • 4WD
    • Heated seats
    • Sunroof
    • Backup camera
    • Apple Carplay
    Close

    Located in Bartow, FL / 149 miles away from Boca Raton, FL

    Florida's number one certified pre-owned dealer.Summit White 2023 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Power ru...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY6PF259254
    Stock: R25091
    Certified Pre-Owned: No
    Listed since: 04-15-2025

  • Price Drop
    Stock photo**
    $66,500
    fair price
    $682 above market
    • 51,687 miles
    • No accidents, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Dublin Nissan (460 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Dublin, GA / 460 miles away from Boca Raton, FL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY8PF126253
    Stock: 105667A
    Certified Pre-Owned: No
    Listed since: 03-26-2025

    • 112,981 miles
    • 2 accidents, 2 owners, personal use
    • 6'10” bed, 6.6l, 8cyl
    • Starling GMC (161 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Titusville, FL / 161 miles away from Boca Raton, FL

    White Frost Tricoat 2021 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Dark Walnut/Dark Ash Gre...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY5MF144995
    Stock: 144995T
    Certified Pre-Owned: No
    Listed since: 04-26-2025

    • 39,079 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Mercedes-Benz of North Orlando (184 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Sanford, FL / 184 miles away from Boca Raton, FL

    Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Ultimate PackageTechnology PackageWhite Frost TricoatSunroof; PowerSun/Moonroof...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY1MF223404
    Stock: MF223404
    Certified Pre-Owned: No
    Listed since: 05-23-2025

Showing 148 - 168 out of 621 listings

Consumer Reviews for the GMC Sierra 2500HD

Read recent reviews for the GMC Sierra 2500HD
Overall Consumer Rating
4.3 out of 5 stars35 Reviews
Write a vehicle reviewSee all 35 reviews
  • 5 star
    (71%)
  • 4 star
    (11%)
  • 3 star
    (3%)
  • 2 star
    (6%)
  • 1 star
    (9%)
4 out of 5 stars

Love the looks, love the power, love the economy

Rick B., 03/18/2021
2020 GMC Sierra 2500HD AT4 4dr Crew Cab 4WD SB (6.6L 8cyl 6A)
I purchased a 2020 Sierra 2500HD AT4 (Duramax) in November of 2020. This thing is a BEAST and a joy to drive. I've put almost 131K miles on it thus far and have not had a single issue. IMHO, the interior is better than a Ford but trails behind the Dodge. However, just because it seems less capable with technology isn't necessarily true. I have physical switches for many things that … the Dodge incorporates in their big screen. I MUCH prefer the switches because I don't have to go through electronic pages to find what I'm looking for. The seats are a bit hard but are very supportive. I'm averaging a 21mpg with it at this point but the majority (80%) of my driving is highway speeds. In an attempt see just how good of gas mileage I could get, I drove a cruise controlled speed of 55 mph on a VERY flat 2 lane road for a little over 75 miles. My results, 29.3mpg, yep, you read that right. As I get up to interstate cruising speed it's much closer to 22mpg. I have hauled my 6,000 pound boat a couple of times with it and it still gets around 14mpg. Speaking of hauling the boat, this thing tows like a dream. The cameras, mirrors and tow-haul mode work great and if I couldn't see the boat in my mirrors, I would hardly know it's there. The voice command menu and responsiveness is great, no issues with it and it has always recognized what I'm asking for. The Bose speakers produce more than I can listen to, and the cab is quiet enough for conference calls when I'm travelling for work. The in-cab outlet is perfect for charging my laptop on the go and allows my wife to use the computer when we travel without killing the battery. I put a hardcover on the bed but with the multipro tailgate I rarely have to do anything with it, and I make a LOT of trips to the lumber yard for 8'+ lumber. All I have to do is drop the upper portion of the tailgate and the long lumber slides right in and is safe and secure. One thing I would criticize. It doesn't match up when compared to the other makers off-roading capabilities (manual/push button locking differentials), but I didn't really buy it for that. If you want something to do some relatively challenging off-road cruising, look elsewhere. I could go on, but suffice it to say that I LOVE this truck and would absolutely recommend it without hesitation.
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Used 2021 GMC Sierra 2500HD in Boca Raton, FL Values

Estimated values
2021 GMC Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$39,576$44,475$49,399
Clean$38,851$43,617$48,398
Average$37,644$42,187$46,728
Rough$36,074$40,327$44,558

The average list price of a used 2021 GMC Sierra 2500HD in Boca Raton, Florida is $63,724. The average mileage on a used GMC Sierra 2500HD 2021 for sale in Boca Raton, Florida is 47,063. Based on the average mileage of 47,063 for used 2021 GMC Sierra 2500HD for sale in Boca Raton, FL and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Sierra 2500HD 2021 in Boca Raton, Florida to be $37,644.

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