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205 listings
  • $50,900
    great price
    $4,952 below market
    • 46,879 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Merit Auto Group (260 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Jacksonville, FL / 260 miles away from Fort Myers, FL

    At Merit Auto Group, we're thrilled to offer top-notch pre-owned vehicles at unbeatable prices. Our cars are priced well below market value, so you ca...

    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: 1GT42YEY4JF224394
    Stock: 5374
    Certified Pre-Owned: No
    Listed since: 04-08-2025

  • $30,000
    great price
    $4,894 below market
    • 195,088 miles
    • 1 accident, 5 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Miami Luxury Motors, Corp (114 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Miami, FL / 114 miles away from Fort Myers, 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: 1GT42YEY0JF256078
    Stock: MLC-256078
    Certified Pre-Owned: No

  • $48,900
    fair price
    $690 below market
    • 92,383 miles
    • No accidents, 4 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Kaiser Buick GMC (172 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Deland, FL / 172 miles away from Fort Myers, FL

    Recent Arrival! 2018 GMC Sierra 3500HD Denali Onyx Black 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic...

    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: 1GT42YEY0JF232511
    Stock: 35332ST
    Certified Pre-Owned: No
    Listed since: 07-21-2025

    • 125,612 miles
    • 1 accident, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Lee Auto Group Tampa (98 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tampa, FL / 98 miles away from Fort Myers, FL

    Power, prestige, luxury, and capability describe our 2018 GMC Sierra 3500 Denali Crew Cab 4X4 Dually with the Denali Preferred Equipment Group brought...

    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: 1GT42YEY3JF158694
    Stock: T3092
    Certified Pre-Owned: No
    Listed since: 05-08-2025

  • 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.
  • Price Drop
    $45,500
    good price
    $2,958 below market
    • 114,369 miles
    • 2 accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Sarasota Ford (66 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Sarasota, FL / 66 miles away from Fort Myers, FL

    Prices are Plus tax, tag, title fee, $1199 Pre-Delivery Service Charge, and $299 Electronic Filing Fee.**FRESH TRADE** DENALI 4WD! 6.6L DURAMAX DIESEL...

    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: Yes

    Features and Specs:

    Listing Information:

    VIN: 1GT42YEY9HF180404
    Stock: F180404A
    Certified Pre-Owned: No
    Listed since: 06-16-2025

  • Price Drop
    $45,500
    fair price
    $835 below market
    • 120,583 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Grieco Ford of Delray Beach (113 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Delray Beach, FL / 113 miles away from Fort Myers, FL

    Located at Grieco Ford of Delray Beach!Recent Arrival! CARFAX One-Owner. 2017 GMC Sierra 3500HD Denali Onyx Black All Routine Maintenance Up To Date,...

    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: 1GT42YEY5HF140269
    Stock: SLA90607B
    Certified Pre-Owned: No
    Listed since: 07-28-2025

  • Price Drop
    Stock photo**
    $43,999
    good price
    $2,335 below market
    • 132,721 miles
    • 1 accident, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Stokes Toyota Hilton Head (400 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Bluffton, SC / 400 miles away from Fort Myers, FL

    ***Stokes Toyota Hilton Head*** Navigation** Power Sunroof** 2019 GMC Sierra 3500HD Denali in Onyx Black, Factory Equipped With: 110-Volt AC Power Out...

    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: 1GT42WEYXKF270981
    Stock: 34493A
    Certified Pre-Owned: No
    Listed since: 07-23-2025

    • 157,062 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Joe Maus Chrysler Dodge Jeep Ram of Dublin (415 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Dublin, GA / 415 miles away from Fort Myers, 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: 1GT42YEY5HF183168
    Stock: R2915B
    Certified Pre-Owned: No
    Listed since: 07-25-2025

  • 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.
    • 108,085 miles
    • No accidents, 6 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • VIP Auto Enterprise (144 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Orlando, FL / 144 miles away from Fort Myers, 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: 1GT42YEY3HF173304
    Stock: 173304
    Certified Pre-Owned: No

  • Price Drop
    $38,976
    good price
    $1,366 below market
    • 176,625 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Commuter Cars (110 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Port Saint Lucie, FL / 110 miles away from Fort Myers, FL

    2018 GMC Sierra 3500HD Denali 4WDClean CARFAX. Recent Arrival!Commuter Cars and Trucks is Family-Owned and Operated. We have been providing exceptiona...

    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: 1GT42YEY6JF115645
    Stock: JF115645L
    Certified Pre-Owned: No
    Listed since: 07-29-2025

  • $49,998
    fair price
    $111 below market
    • 86,241 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Sheehan Buick GMC (113 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Lighthouse Point, FL / 113 miles away from Fort Myers, FL

    Take command of the road with this Black 2018 GMC Sierra 3500HD Denali Crew Cab DRW 4x4. Powered by the legendary Duramax 6.6L Turbo Diesel V8 and the...

    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: 1GT42YEY1JF217435
    Stock: 25642A
    Certified Pre-Owned: No
    Listed since: 07-22-2025

  • Price Drop
    $50,990
    fair price
    $310 above market
    • 80,630 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
    • Navigation
    • Leather Seats
    Close

    Located in Charlotte, NC / 601 miles away from Fort Myers, 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: 1GT42YEYXJF245542
    Stock: 2003864142
    Certified Pre-Owned: No
    Listed since: 07-04-2025

  • 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.
    • 68,358 miles
    • No accidents, 3 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Century Buick GMC (106 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tampa, FL / 106 miles away from Fort Myers, FL

    ***We offer Fair Market Pricing that won't go up when you walk through the door!Priced below KBB Fair Purchase Price! Summit White 2018 GMC Sierra...

    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: 1GT42XEY0JF277619
    Stock: JF277619
    Certified Pre-Owned: No
    Listed since: 07-04-2025

  • New Listing
    Stock photo**
    • 44,779 miles
    • 1 accident, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Carl Black Chevrolet Buick GMC of Orlando (144 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Orlando, FL / 144 miles away from Fort Myers, FL

    This 2020 GMC Sierra 3500HD Denali with 44779 miles has a Onyx Black exterior and Dark Walnut/Dark Ash Grey interior and comes equipped with a Turboch...

    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: 1GT49WEY4LF144547
    Stock: 4350768A
    Certified Pre-Owned: No
    Listed since: 08-03-2025

  • Price Drop
    $47,997
    great price
    $5,335 below market
    • 85,390 miles
    • 2 accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Gerald Jones GMC (483 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Graniteville, SC / 483 miles away from Fort Myers, FL

    Command the road and everything beyond it with this powerful and luxurious 2019 GMC Sierra 3500HD Denali, finished in a bold Onyx Black and buil...

    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: 1GT42WEYXKF162831
    Stock: 620711A
    Certified Pre-Owned: No
    Listed since: 04-24-2025

  • Price Drop
    • 48,753 miles
    • No accidents, 1 owner, personal use only
    • Audi Jacksonville (261 mi away)
    • Upgraded Engine
    Close

    Located in Jacksonville, FL / 261 miles away from Fort Myers, FL

    Used For Sale Near Me. 2021 GMC Sierra 3500HD Cayenne Red Tintcoat Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, ...

    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: 1GT49WEY4MF217949
    Stock: MF217949C
    Certified Pre-Owned: No
    Listed since: 06-21-2025

  • 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.
  • New Listing
    $56,999
    fair price
    $3,076 above market
    • 66,572 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 6'7” bed, 6.6l, 8cyl
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Klamath Falls, OR / 2,484 miles away from Fort Myers, FL

    CarFax No Accidents Reported,CarFax 1-Owner,Rare Find,Back-Up Camera,Bluetooth,Chrome Wheels,Heated Seats,Leather Seats,Remote Start,Satellite Radio,T...

    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: 1GT42VCY9KF164499
    Stock: KF164499P
    Certified Pre-Owned: No

    • 164,525 miles
    • Frame damage reported, 2 owners, personal use
    • 8'2” bed, 6.6l, 8cyl
    • Xtreme Motors (111 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Hollywood, FL / 111 miles away from Fort Myers, FL

    The front windshield is in excellent condition. The paint is in great shape and condition. Some dings are visible on this vehicle. The tires are sligh...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Issue reported

    Salvage Vehicle: No

    Frame Damage: Yes

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GT42WEY7KF249005
    Stock: 249005
    Certified Pre-Owned: No
    Listed since: 05-29-2025

  • $43,987
    fair price
    $143 below market
    • 68,299 miles
    • 1 accident, 1 owner, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Subaru North Orlando (155 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Sanford, FL / 155 miles away from Fort Myers, FL

    TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode, TRAILERING ...

    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: 1GT424E8XFF608356
    Stock: FF608356
    Certified Pre-Owned: No
    Listed since: 05-27-2025

  • $43,999
    fair price
    $1,345 above market
    • 151,790 miles
    • 1 accident, 3 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Hillsboro Auto Mart (109 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tampa, FL / 109 miles away from Fort Myers, FL

    *** www.HillsboroAutoMart.com *** ***2019 GMC SIERRA 3500 DENALI*** ***6.6L V8 DI DSL T/C 6.6L*** ***4X4*** ***DRW*** ***SUNROOF*** ***BOSE SPEAKER SY...

    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: 1GT42WEY2KF181583
    Stock: 181583
    Certified Pre-Owned: No
    Listed since: 07-04-2025

    • 22,738 miles
    • No accidents, 1 owner, personal use only
    • AutoNation USA Sanford (158 mi away)
    • Sunroof/Moonroof
    • Heads up display
    • Towing Hitch
    Close

    Located in Sanford, FL / 158 miles away from Fort Myers, FL

    Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Ultimate PackageTechnology PackageAssist Steps; Power-RetractableSunroof; Power...

    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: 1GT49WEY6MF251651
    Stock: MF251651
    Certified Pre-Owned: No
    Listed since: 07-21-2025

Showing 1 - 21 out of 205 listings

Consumer Reviews for the GMC Sierra 3500HD

Read recent reviews for the GMC Sierra 3500HD
Overall Consumer Rating
3.1 out of 5 stars9 Reviews
Write a vehicle reviewSee all 9 reviews
  • 5 star
    (33%)
  • 4 star
    (22%)
  • 3 star
    (0%)
  • 2 star
    (11%)
  • 1 star
    (33%)
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 2018 GMC Sierra 3500HD in Fort Myers, FL Values

Estimated values
2018 GMC Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$36,073$39,397$42,127
Clean$35,078$38,297$40,938
Average$33,419$36,464$38,956
Rough$31,262$34,082$36,379

The average list price of a used 2018 GMC Sierra 3500HD in Fort Myers, Florida is $46,927. The average mileage on a used GMC Sierra 3500HD 2018 for sale in Fort Myers, Florida is 102,737. Based on the average mileage of 102,737 for used 2018 GMC Sierra 3500HD for sale in Fort Myers, 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 2018 in Fort Myers, Florida to be $33,419.

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