Used 2021 GMC Sierra 3500HD for SaleNationwide
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 76,571
- Stock #:
- C26029B
- VIN:
- 1GT49TE76LF248155
2020 GMC Sierra 3500HD
SLE Crew Cab 4WD
76,571 mi
$36,299
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Transmission:
- Automatic
- Mileage:
- 68,385
- Stock #:
- 40239
- VIN:
- 1GT49WEY1LF301970
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
68,385 mi
$53,250
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Summit White
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 107,191
- Stock #:
- 1G247382B
- VIN:
- 1GT49VEY7NF231887
2022 GMC Sierra 3500HD
AT4 Crew Cab 4WD
107,191 mi
$44,790
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 101,914
- Stock #:
- E47611
- VIN:
- 1GD49SE7XLF258712
2020 GMC Sierra 3500HD
Base Crew Cab LB 4WD
101,914 mi
$29,986
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 150,726
- Stock #:
- 291242
- VIN:
- 1GT49TE75MF291242
2021 GMC Sierra 3500HD
SLE Crew Cab LB 4WD
150,726 mi
$28,999
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Black
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 76,603
- Stock #:
- NF317842T
- VIN:
- 1GT49WEY2NF317842
2022 GMC Sierra 3500HD
Denali Crew Cab 4WD
76,603 mi
$56,180
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- White
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 37,930
- Stock #:
- XJ9991
- VIN:
- 1GT49WEY3NF137799
2022 GMC Sierra 3500HD
Denali Crew Cab 4WD
37,930 mi
$59,497
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White
- Fuel type:
- Biodiesel
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 97,687
- Stock #:
- MF230613T
- VIN:
- 1GT49WEY3MF230613
2021 GMC Sierra 3500HD
Denali Crew Cab 4WD
97,687 mi
$50,220
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 120,408
- Stock #:
- B303000
- VIN:
- 1GD49SE72MF303000
2021 GMC Sierra 3500HD
Crew Cab LB 4WD
120,408 mi
$30,197
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 2 doors
- Drivetrain:
- 4X2
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 103,817
- Stock #:
- 1260045A
- VIN:
- 1GD38PE76MF189255
2021 GMC Sierra 3500HD
LB RWD
103,817 mi
$22,084
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- ONYX BLACK
- Interior color:
- JET BLACK
- Transmission:
- Automatic
- Mileage:
- 126,779
- Stock #:
- 269261A
- VIN:
- 1GT49WEY1MF147472
-$1,034
2021 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
126,779 mi
$46,785
$45,751
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Gray (Dark Sky Metallic)
- Fuel type:
- Biodiesel
- Interior color:
- Gray (Dark Walnut/Dark Ash Grey)
- Transmission:
- Automatic
- Mileage:
- 93,921
- Stock #:
- C4381A
- VIN:
- 1GT49WEY1LF248493
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
93,921 mi
$52,499
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Cayenne Red
- Fuel type:
- Gasoline
- Interior color:
- Jet Black W/Kalahari Acce
- Transmission:
- 6-Speed Automatic
- Mileage:
- 106,890
- Stock #:
- AV0674
- VIN:
- 1GT49VE76NF100604
2022 GMC Sierra 3500HD
AT4 Crew Cab 4WD
106,890 mi
$41,176
CarGurus Analysis:
2021 GMC Sierra 3500HD
With 681 currently listed for sale and an average price of $52,718.00, 28.2% of 2021 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Sierra 3500HD 5 / 5 stars.
79.9% of 2021 Sierra 3500HD models on CarGurus are accident free.
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Black (Ebony Twilight Metallic)
- Fuel type:
- Biodiesel
- Interior color:
- Gray (Dark Walnut/Dark Ash Grey)
- Transmission:
- Automatic
- Mileage:
- 94,281
- Stock #:
- C5097A
- VIN:
- 1GT49WEY7NF272753
-$1,560
2022 GMC Sierra 3500HD
Denali Crew Cab 4WD
94,281 mi
$52,932
$51,372
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 72,310
- Stock #:
- P178416
- VIN:
- 1GT49VEY9NF178416
2022 GMC Sierra 3500HD
AT4 Crew Cab 4WD
72,310 mi
$53,837
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 119,793
- Stock #:
- SFO251694A
- VIN:
- 1GT49VEY1MF298452
2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
119,793 mi
$43,558
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Black
- Fuel type:
- Biodiesel
- Transmission:
- Automatic
- Mileage:
- 180,343
- Stock #:
- 29986
- VIN:
- 1GT49VEY3MF235708
2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
180,343 mi
$32,735
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Summit White
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 122,993
- Stock #:
- 6101B
- VIN:
- 1GT49WEY5LF127238
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
122,993 mi
$45,199
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 64,896
- Stock #:
- A7399A
- VIN:
- 1GT49VEY5NF363739
2022 GMC Sierra 3500HD
AT4 Crew Cab 4WD
64,896 mi
$56,228
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- 6-Speed Automatic
- Mileage:
- 70,747
- Stock #:
- 311509
- VIN:
- 1GD49SE73MF311509
2021 GMC Sierra 3500HD
Crew Cab LB DRW 4WD
70,747 mi
$41,219
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Pacific Blue Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 40,884
- Stock #:
- PAW046
- VIN:
- 1GT49WEY5NF110748
2022 GMC Sierra 3500HD
Denali Crew Cab 4WD
40,884 mi
$64,577
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Carbon Black Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 117,092
- Stock #:
- 509569
- VIN:
- 1GT49WEY1LF347038
-$1,000
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
117,092 mi
$46,797
$45,797
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Summit White
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 69,640
- Stock #:
- CM6461BX
- VIN:
- 1GT49TEY2NF345011
-$3,762
2022 GMC Sierra 3500HD
SLE Crew Cab 4WD
69,640 mi
$46,012
$42,250
CarGurus Analysis: 2021 GMC Sierra 3500HD
Summary
With 681 currently listed for sale and an average price of $52,718.00, 28.2% of 2021 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Sierra 3500HD 5 / 5 stars.
79.9% of 2021 Sierra 3500HD models on CarGurus are accident free.
Why it stands out
The 2021 GMC Sierra 3500HD is a robust heavy-duty truck that combines impressive towing and hauling capabilities with a touch of luxury, especially in its higher trims like the Denali. This model is part of the fifth generation, which has seen significant improvements in technology and performance since its debut. The Sierra 3500HD can tow up to 35,500 pounds when properly equipped, making it a top choice for those needing serious workhorse capabilities. Additionally, the truck offers a range of configurations, including various cab styles and bed lengths, catering to diverse buyer needs. The interior is well-appointed, especially in higher trims, featuring advanced tech and comfort options that enhance the driving experience. While it excels in many areas, potential buyers should be aware that its size can make it unwieldy in tight spaces, and top trims can come with a hefty price tag.
Other model years to consider
- Average price: $69,179.00
- Good/great deal percentage: 29.3%
- User rating: 5 / 5
- Total listings: 1,230
- Average price: $76,670.00
- Good/great deal percentage: 28.7%
- User rating: 5 / 5
- Total listings: 1,179
- Average price: $56,470.00
- Good/great deal percentage: 27.4%
- Accident-free percentage: 90.7%
- Total listings: 1,144
This analysis is based on CarGurus' proprietary market data from July 20, 2026, CarGurus experts' opinions, and generative AI.
5.0 Overall rating
Filter by rating
John P
Reviewed a 2021 GMC Sierra 3500HD on Nov 3, 2023
This truck is incredible and very comfortable for even daily use.
Anonymous
Reviewed a 2021 GMC Sierra 3500HD on Jun 5, 2021
This truck was what was needed to pull our 42’ 5th wheel safely. It has the comfort of a nice ride and the power to pull and the and the strength to haul what I need.
Joe H
Reviewed a 2021 GMC Sierra 3500HD on Feb 8, 2021
The Black Diamond Edition is one of the most popular trucks out there. There has been only 2 in our area and both sold before they arrived at the lot.
2021 GMC Sierra 3500HD Trims
| Trim type | MSRP |
|---|---|
| Denali Crew Cab LB DRW 4WD | $68,100 |
| Crew Cab LB 4WD | $44,800 |
| Double Cab LB 4WD | $40,200 |
| Crew Cab 4WD | $44,600 |
| SLE Crew Cab 4WD | $49,400 |
| SLT Crew Cab 4WD | $57,400 |
| AT4 Crew Cab 4WD | $60,300 |
| Denali Crew Cab 4WD | $66,700 |
2021 GMC Sierra 3500HD Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2021 GMC Sierra 3500HD prices has changed over time.
See more price trends2021 GMC Sierra 3500HD Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest Prices in Washington, DC: The market in Washington, DC ($57,249) reflects strong demand, likely due to urban preferences for larger vehicles.
- Lowest Price in Los Angeles, CA: Los Angeles ($42,911) offers the most competitive pricing, suggesting a higher inventory or more price-sensitive buyers.
- Inventory Variation: Cities like Chicago (89 listings) and Dallas (84 listings) show a balance of inventory and pricing, with average prices around $44,999 and $50,285, respectively.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Washington, DC | 82 | $57,249 |
| Philadelphia, PA | 82 | $55,610 |
| Houston, TX | 83 | $54,749 |
| Atlanta, GA | 82 | $53,892 |
| Dallas, TX | 84 | $50,285 |
| Miami, FL | 61 | $49,243 |
| Chicago, IL | 89 | $44,999 |
| Boston, MA | 77 | $45,981 |
| Los Angeles, CA | 65 | $42,911 |
Pricing Analysis by Model Year
Key Insights
- Significant New-Car Premium: The 2026 GMC Sierra 3500HD is priced at $90,357, which is 87.5% above MSRP, indicating high demand for the latest model.
- Depreciation Trends: Older models, particularly the 2014 GMC Sierra 3500HD, show a steep decline in value, priced at $27,944, reflecting a 15.5% depreciation from its original MSRP.
- Best Value Years: The 2020 GMC Sierra 3500HD offers a balance of price and value, with an average price of $51,083, representing a 38.5% depreciation from its original MSRP.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 GMC Sierra 3500HD | $48,200 | $90,357 | +87.5% |
| 2025 GMC Sierra 3500HD | $47,500 | $77,113 | +62.5% |
| 2024 GMC Sierra 3500HD | $46,600 | $70,465 | +51.3% |
| 2023 GMC Sierra 3500HD | $43,400 | $59,299 | +36.7% |
| 2022 GMC Sierra 3500HD | $41,400 | $55,809 | +34.8% |
| 2020 GMC Sierra 3500HD | $37,000 | $51,083 | +38.5% |
| 2019 GMC Sierra 3500HD | $40,800 | $44,105 | +8.5% |
| 2018 GMC Sierra 3500HD | $36,100 | $42,943 | +18.8% |
| 2017 GMC Sierra 3500HD | $35,290 | $39,222 | +11.1% |
| 2016 GMC Sierra 3500HD | $34,635 | $36,522 | +5.4% |
| 2015 GMC Sierra 3500HD | $34,295 | $34,343 | +0.1% |
| 2014 GMC Sierra 3500HD | $32,805 | $27,944 | -15.5% |
These recommendations are based on CarGurus' proprietary market data from July 23, 2026, CarGurus experts' opinions, and generative AI.
FAQs
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