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226 listings
  • New Listing
    Stock photo**
    • 89,648 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • Gainesville Buick GMC (199 mi away)
    • Back-up camera
    • Sunroof/Moonroof
    • Blind Spot Monitorin...
    • Upgraded Stereo
    • Parking sensors
    Close

    Located in Gainesville, FL / 199 miles away from Port Saint Lucie, FL

    FULLY SERVICED! GREAT VEHICLE HISTORY! ***HOME OF THE LIFETIME WARRANTY***150 Point Inspection*** Recent Arrival!GMC Sierra 3500HD 2020 Red Quartz Tin...

    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: 1GT49VEY6LF305135
    Stock: F305135
    Certified Pre-Owned: No
    Listed since: 05-28-2025

    • 82,910 miles
    • 1 accident, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Plattner's Lehigh Acres (95 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Lehigh Acres, FL / 95 miles away from Port Saint Lucie, FL

    WINTER GRILLE COVER, WHITE FROST TRICOAT, TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, TECHNOLOGY PACKAGE includes (UVS) HD Surround Vision, (DRZ) Rear ...

    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: 1GT49WEY4LF170419
    Stock: 3170419B
    Certified Pre-Owned: No
    Listed since: 03-28-2025

    • 79,398 miles
    • Manufacturer buyback reported, 3 owners, personal use
    • Winter Park Auto Exchange Inc (101 mi away)
    Close

    Located in Orlando, FL / 101 miles away from Port Saint Lucie, FL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Issue reported

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: Yes

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT49WEY6LF280856
    Stock: 280856
    Certified Pre-Owned: No

  • Price Drop
    • 132,024 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • 67 Motors (300 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Valdosta, GA / 300 miles away from Port Saint Lucie, FL

    Clean CARFAX. 2020 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rea...

    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: 1GT49WEY0LF344566
    Stock: 2106JD
    Certified Pre-Owned: No
    Listed since: 04-04-2025

  • 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.
    • 120,468 miles
    • 1 accident, 1 owner, personal use
    • 8'2” bed, 6.6l, 8cyl
    • Hillsboro Auto Mart (135 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Tampa, FL / 135 miles away from Port Saint Lucie, FL

    *** www.HillsboroAutoMart.com *** ***2020 GMC SIERRA 3500 DENALI*** ***6.6L V8 DI DSL T/C 6.6L*** ***DRW*** ***DENALI ULTIMATE PKG*** ***SUNROOF*** **...

    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: 1GT49WEY6LF337931
    Stock: 337931
    Certified Pre-Owned: No
    Listed since: 04-20-2025

    • 129,143 miles
    • 1 accident, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Murray Chrysler Dodge Jeep Ram Of Starke (208 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Starke, FL / 208 miles away from Port Saint Lucie, FL

    Onyx Black 2020 GMC Sierra 3500HD SLT Bluetooth®, HANDS-FREE, LEATHER SEATS, 10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rear Auxiliary Power ...

    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: 1GT49UEY2LF316479
    Stock: 316479
    Certified Pre-Owned: No
    Listed since: 05-03-2025

  • New Listing
    Stock photo**
    $69,988
    great price
    $5,842 below market
    • 21,241 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Starling Buick GMC Stuart (15 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Stuart, FL / 15 miles away from Port Saint Lucie, FL

    2023 GMC Sierra 3500HD Denali White Frost Tricoat Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WD CARFAX One-Owner. Clean CARFAX. ONE OWNER, Blueto...

    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: 1GT49WEY5PF129268
    Stock: 129268T
    Certified Pre-Owned: No
    Listed since: 05-30-2025

    • 73,579 miles
    • 1 accident, 3 owners, rental vehicle
    • 8'2” bed, 6l, 8cyl
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Alarm
    Close

    Located in Grants Pass, OR / 2,614 miles away from Port Saint Lucie, FL

    Low Mileage,High Demand,Rare Find,Satellite Radio,Tow Hitch,4-Wheel Disc Brakes,6-Speed A/T,8 Cylinder Engine,A/C,ABS,Adjustable Steering Wheel,AM/FM ...

    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: 1GT423EG1EF128173
    Stock: EF128173G
    Certified Pre-Owned: No

  • 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
    $65,000
    good price
    $4,662 below market
    • 37,925 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Walterboro Ford (387 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Walterboro, SC / 387 miles away from Port Saint Lucie, FL

    Hi Line Auto Group is excited to introduce our latest addition, "Walterboro Ford." As a FAMILY-OWNED and operated business, we take immense pride in o...

    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: 1GT49WEY0MF245036
    Stock: PT245036
    Certified Pre-Owned: No
    Listed since: 04-12-2025

  • Price Drop
    $67,470
    fair price
    $218 below market
    • 23,269 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • ALM Hyundai Athens (491 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Athens, GA / 491 miles away from Port Saint Lucie, FL

    GOOSENECK / 5TH WHEEL PREP PACKAGE..DENALI PREFERRED EQUIPMENT GROUP..SUSPENSION PACKAGE..BLIND SPOT..COOLED HEATED SEATS..LANE DEPARTURE..LEATHER SEA...

    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: 1GT49WEY6PF192153
    Stock: PF192153
    Certified Pre-Owned: No
    Listed since: 04-15-2025

  • $63,055
    fair price
    $347 above market
    • 36,956 miles
    • No accidents, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Gary Yeomans Ford of Ocala (168 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Ocala, FL / 168 miles away from Port Saint Lucie, FL

    Certified.2023 GMC Sierra 3500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Onyx Black10-Speed Automatic, 4WD, Jet Black With Kalahari A...

    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: 1GT49VEY7PF123725
    Stock: EF95386A
    Certified Pre-Owned: No
    Listed since: 04-21-2025

  • $60,990
    good price
    $3,023 below market
    • 67,274 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • David Scott Lee Buick GMC (439 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Crestview, FL / 439 miles away from Port Saint Lucie, FL

    CARFAX One-Owner. Certified. Cayenne Red Tintcoat 2021 GMC Sierra 3500HD Denali Duramax 6.6L V8 Turbodiesel 4WD **GM Certified Pre-Owned**, **Sunroof/...

    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: 1GT49WEY0MF255873
    Stock: 25550A
    Certified Pre-Owned: Yes
    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.
  • $43,999
    good price
    $2,710 below market
    • 99,366 miles
    • 2 accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • The Connection Motors (101 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Blind Spot Monitorin...
    Close

    Located in Hialeah, FL / 101 miles away from Port Saint Lucie, FL

    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: 1GT49SEY2MF195619
    Stock: 10900
    Certified Pre-Owned: No
    Listed since: 09-05-2024

  • New Listing
    • 17,251 miles
    • No accidents, 1 owner, personal use
    • 8'2” bed, 6.6l, 8cyl
    • Carvana - Tampa (132 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Tampa, FL / 132 miles away from Port Saint Lucie, 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: 1GT59SEY7PF195124
    Stock: 2003651534
    Certified Pre-Owned: No
    Listed since: 04-26-2025

  • $61,888
    fair price
    $868 above market
    • 68,258 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Gettel Toyota of Charlotte County (104 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Punta Gorda, FL / 104 miles away from Port Saint Lucie, FL

    This 2021 GMC Sierra 3500HD Denali, has a great Summit White exterior, and a clean Dark Walnut/Dark Ash Grey interior! This model has many valuable op...

    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: 1GT49WEY2MF182179
    Stock: TS2883
    Certified Pre-Owned: No
    Listed since: 02-18-2025

  • New Listing
    $53,990
    fair price
    $1,003 above market
    • 112,778 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Bend, OR / 2,536 miles away from Port Saint Lucie, FL

    CarFax No Accidents Reported,CarFax 1-Owner,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Heads-Up Display,Heated Seats,Heated Steering Wh...

    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: 1GT49WEY4MF135039
    Stock: MF135039G
    Certified Pre-Owned: No

  • 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
    • 30,791 miles
    • No accidents, 2 owners, personal use only
    • Sarasota Ford (130 mi away)
    • Sunroof/Moonroof
    • Upgraded Engine
    • Heads up display
    • Towing Hitch
    Close

    Located in Sarasota, FL / 130 miles away from Port Saint Lucie, 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: 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: 1GT49WEYXPF173833
    Stock: PF173833
    Certified Pre-Owned: No
    Listed since: 03-30-2025

    • 18,886 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Mullinax Buick GMC (492 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Montgomery, AL / 492 miles away from Port Saint Lucie, FL

    Mullinax Bronze vehicles give you the assurance of a 5 DAY/300-Mile RETURN POLICY, and a complete CARFAX vehicle history report! If you don't like it,...

    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: 1GT49WEY6MF158578
    Stock: 158578C
    Certified Pre-Owned: No
    Listed since: 05-13-2025

    • 57,279 miles
    • No accidents, 1 owner, personal use only
    • Rivard Buick GMC (126 mi away)
    • Upgraded Engine
    Close

    Located in Tampa, FL / 126 miles away from Port Saint Lucie, FL

    CARFAX One-Owner. Recent Arrival! Summit White 2023 GMC Sierra 3500HD Denali Duramax 6.6L V8 Turbodiesel 4WD 10-Speed Automatic Leather Seats, Backup/...

    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: 1GT49WEY3PF144545
    Stock: S2960A
    Certified Pre-Owned: No
    Listed since: 05-16-2025

    • 89,081 miles
    • No accidents, 1 owner, personal use only
    • Kaiser Buick GMC (128 mi away)
    • Upgraded Engine
    • Heads up display
    • Towing Hitch
    Close

    Located in Deland, FL / 128 miles away from Port Saint Lucie, FL

    This 2023 GMC Sierra 3500HD in Hunter Metallic is equipped with: 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel To be the best we never rest! This...

    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: 1GT49WEY6PF134091
    Stock: 35158AT
    Certified Pre-Owned: No
    Listed since: 01-02-2025

    • 112,543 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • The Connection Motors (101 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Hialeah, FL / 101 miles away from Port Saint Lucie, 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: 1GT49UEY9MF135753
    Stock: 11019
    Certified Pre-Owned: No
    Listed since: 10-02-2024

Showing 64 - 84 out of 226 listings

Consumer Reviews for the GMC Sierra 3500HD

Read recent reviews for the GMC Sierra 3500HD
Overall Consumer Rating
3.1 out of 5 stars7 Reviews
Write a vehicle reviewSee all 7 reviews
  • 5 star
    (29%)
  • 4 star
    (29%)
  • 3 star
    (0%)
  • 2 star
    (14%)
  • 1 star
    (29%)
4 out of 5 stars

The designers and engineers should drive it more

Mike Langford, 01/16/2020
2017 GMC Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A)
The Nav system is almost useless as far as address input, The 4 wheel selector knob doesn't need to above the very similar headlight knob, Why not put a DEF gauge in it? When DEF warning triggers the DIC, no other information is available until the DEF tank is filled! Entertainment system (CD, books on disk and downloaded library books) startup again when I approach the vehicle … (phone in my pocket) and the engine is running. I have lost my place in many books many times because of this. The backup camera surely came from a Cracker Jacks box, substandard quality. The center display will ruin your night vision when put in reverse (it could use a dimmer/off switch). And why not allow full time use of the back up camera and back up lighting? (I live and work on my farm). Steering wheel buttons could be a little more intuitive, It's easy to turn on the steering wheel heater when the intent was to reduce the cruise speed. My truck has the 6.6 Duramax (awsome!) and I drive about 10k miles/mo. Needless to say, I'm in it a lot. Don't misunderstand, I love my truck but like I said in the beginning, the design and engineering people should have to drive their creations for a month or so. How did someone devise the notion to put the DEF filler neck under the hood and on the passenger side firewall? A common problem and more future problems will occur as the caustic DEF fluid splashes out of the filler neck, it drains down on top of and puddles in the wiring harness on the bottom of the DEF tank where the wires go into the bottom of the tank. It's happened once and it damaged the DEF tank heater... thingie. Luckily it was under extended warranty. And one thing Edmunds, I couldn't find the 6.6 Duramax option on your drop down menus. There all 6.0s
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Used 2020 GMC Sierra 3500HD in Port Saint Lucie, FL Values

Estimated values
2020 GMC Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$43,437$47,331$51,087
Clean$42,517$46,301$49,945
Average$40,983$44,583$48,042
Rough$38,989$42,350$45,567

The average list price of a used 2020 GMC Sierra 3500HD in Port Saint Lucie, Florida is $57,748. The average mileage on a used GMC Sierra 3500HD 2020 for sale in Port Saint Lucie, Florida is 71,432. Based on the average mileage of 71,432 for used 2020 GMC Sierra 3500HD for sale in Port Saint Lucie, 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 3500HD 2020 in Port Saint Lucie, Florida to be $40,983.

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