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493 listings
  • $50,900
    good price
    $4,348 below market
    • 46,879 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Merit Auto Group (165 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Jacksonville, FL / 165 miles away from Tallahassee, 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

  • $29,999
    great price
    $4,875 below market
    • 195,088 miles
    • 1 accident, 5 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Miami Luxury Motors, Corp (407 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Miami, FL / 407 miles away from Tallahassee, 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: MLMC-256078
    Certified Pre-Owned: No

  • $48,900
    fair price
    $410 below market
    • 92,383 miles
    • No accidents, 4 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Kaiser Buick GMC (207 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Deland, FL / 207 miles away from Tallahassee, 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

  • Price Drop
    $51,590
    fair price
    $1,127 above market
    • 80,630 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Carvana - Charlotte (388 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Charlotte, NC / 388 miles away from Tallahassee, 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.
  • $46,000
    fair price
    $1,943 above market
    • 125,612 miles
    • 1 accident, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Lee Auto Group Tampa (210 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tampa, FL / 210 miles away from Tallahassee, 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

    • 55,829 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • Bob Mills Chevrolet (372 mi away)
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    • USB Inputs
    Close

    Located in Darlington, SC / 372 miles away from Tallahassee, FL

    White 2018 GMC Sierra 3500HD SLT 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic, 4WD, Jet Black Leather...

    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: 1GT42XCY3JF258968
    Stock: CU1767
    Certified Pre-Owned: No
    Listed since: 05-08-2025

    • 25,427 miles
    • No accidents, 3 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Jerry Hunt Supercenter (441 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Lexington, NC / 441 miles away from Tallahassee, FL

    Recent Arrival! Carfax Accident Free, Custom Wheels and Tires, Lift Kit, Leather Interior, Tow Package, Sunroof, Backup Camera, Bluetooth, Sirius XM, ...

    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: 1GT42YEY5JF253483
    Stock: 23383
    Certified Pre-Owned: No
    Listed since: 07-25-2025

  • New Listing
    $49,901
    great price
    $7,321 below market
    • 61,161 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Bleecker Buick GMC (426 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Red Springs, NC / 426 miles away from Tallahassee, FL

    Sunroof, Heated/Cooled Leather Seats, Navigation, 4x4, Turbo Charged, Alloy Wheels, Bed Liner, Trailer Hitch, GOOSENECK / 5TH WHEEL PREP PACKAGE -- HI...

    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: 1GT42WEY0KF188404
    Stock: M5180B
    Certified Pre-Owned: No
    Listed since: 07-26-2025

  • 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.
  • $44,555
    great price
    $5,344 below market
    • 102,595 miles
    • 2 accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Bob Mills Chevrolet (372 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Darlington, SC / 372 miles away from Tallahassee, FL

    Onyx Black 2019 GMC Sierra 3500HD Denali 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic, 4WD, Jet Black...

    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: 1GT42WEY7KF254172
    Stock: CU1650
    Certified Pre-Owned: No
    Listed since: 02-07-2025

  • Price Drop
    $45,500
    great price
    $3,046 below market
    • 114,369 miles
    • 2 accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Sarasota Ford (241 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Sarasota, FL / 241 miles away from Tallahassee, 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

  • $51,950
    good price
    $2,319 below market
    • 76,710 miles
    • No accidents, 4 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Impex Auto Sales (464 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Greensboro, NC / 464 miles away from Tallahassee, FL

    This 2019 GMC Sierra 3500HD Denali 4WD, with 76710 miles, has been thoroughly inspected and reconditioned by our expert service team. At Impex Auto Sa...

    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: 1GT42WEY7KF222760
    Stock: 1GT4623A
    Certified Pre-Owned: No
    Listed since: 04-20-2025

  • $44,985
    great price
    $3,658 below market
    • 74,965 miles
    • 1 accident, 4 owners, corporate fleet vehicle
    • 8'2” bed, 6.6l, 8cyl
    • United Global Imports (263 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Cumming, GA / 263 miles away from Tallahassee, FL

    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: 1GT42XEY8HF234284
    Stock: 3563
    Certified Pre-Owned: No

  • 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
    Stock photo**
    $51,138
    good price
    $1,904 below market
    • 84,587 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Reidsville Nissan (487 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Reidsville, NC / 487 miles away from Tallahassee, FL

    Your Next Ride Starts Here at Reidsville Nissan!Clean CARFAX. Onyx Black 2019 GMC Sierra 3500HD Denali 4WD Allison 1000 6-Speed Automatic Duramax 6.6...

    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: 1GT42WEY0KF281536
    Stock: R13467
    Certified Pre-Owned: No
    Listed since: 07-30-2025

  • New Listing
    $45,500
    fair price
    $822 below market
    • 120,583 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Grieco Ford of Delray Beach (376 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Delray Beach, FL / 376 miles away from Tallahassee, 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: 07-29-2025

  • Stock photo**
    $44,556
    fair price
    $1,989 below market
    • 132,721 miles
    • 1 accident, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Stokes Toyota Hilton Head (238 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Bluffton, SC / 238 miles away from Tallahassee, 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 (165 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Dublin, GA / 165 miles away from Tallahassee, 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: 07-26-2025

  • 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.
    • 89,795 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 6'7” bed, 6.6l, 8cyl
    • CRM Motors (246 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Pelham, AL / 246 miles away from Tallahassee, FL

    Looking for a truck that can handle any task with ease? Look no further than this White 2019 GMC Sierra 3500HD! This beast of a truck not only looks s...

    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: 1GT42WEY6KF210860
    Stock: 210860
    Certified Pre-Owned: No

  • Stock photo**
    • 72,015 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Twin City Buick GMC (373 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Alcoa, TN / 373 miles away from Tallahassee, FL

    This vehicle is located at Twin City Auto Center 3076 Airport HWY Alcoa TN 37701, 865-970-3900! This 2019 GMC Sierra 3500HD Denali is loaded with th...

    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: 1GT42WEY8KF241642
    Stock: KF241642E
    Certified Pre-Owned: No
    Listed since: 06-13-2025

  • New Listing
    Stock photo**
    • 71,277 miles
    • No accidents, 3 owners, personal use only
    • 6'7” bed, 6.6l, 8cyl
    • Johnson Family Chevrolet (481 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Woodlawn, VA / 481 miles away from Tallahassee, FL

    Recent Arrival! 2019 GMC Sierra 3500HD Denali Onyx BlackLocated in Woodlawn, Virginia at Johnson Family Chevrolet. NO DOC or PROCESSING FEES, EVER!Odo...

    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: 1GT42WEY5KF108496
    Stock: P11098
    Certified Pre-Owned: No
    Listed since: 07-30-2025

    • 128,683 miles
    • 1 accident, 3 owners, corporate fleet vehicle
    • 6'7” bed, 6.6l, 8cyl
    • CRM Motors (246 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Pelham, AL / 246 miles away from Tallahassee, FL

    Get ready to dominate the road in this sleek Black 2017 GMC Sierra 3500HD! This powerhouse of a truck is equipped with a V8 engine that roars to life ...

    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: 1GT42YEY8HF172357
    Stock: 172357
    Certified Pre-Owned: No

  • Stock photo**
    $38,898
    great price
    $7,663 below market
    • 121,551 miles
    • No accidents, 3 owners, corporate fleet vehicle
    • 8'2” bed, 6.6l, 8cyl
    • Perfect Ride (492 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Smithfield, NC / 492 miles away from Tallahassee, FL

    Thank you for viewing our 2018 GMC Sierra 3500HD Denali Crew Cab 4WD for sale in Smithfield, NC. If you have any specific questions please contact us....

    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: 1GT42YEY9JF115770
    Stock: 8634
    Certified Pre-Owned: No
    Listed since: 07-19-2025

Showing 1 - 21 out of 493 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 Tallahassee, 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$37,064$40,477$43,281
Clean$36,042$39,348$42,059
Average$34,337$37,465$40,023
Rough$32,121$35,017$37,375

The average list price of a used 2018 GMC Sierra 3500HD in Tallahassee, Florida is $48,061. The average mileage on a used GMC Sierra 3500HD 2018 for sale in Tallahassee, Florida is 96,663. Based on the average mileage of 96,663 for used 2018 GMC Sierra 3500HD for sale in Tallahassee, 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 Tallahassee, Florida to be $34,337.

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