Used 2020 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:
- 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:
- 2020
- 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
- Transmission:
- Automatic
- Mileage:
- 230,372
- Stock #:
- ITS8456A
- VIN:
- 1GT49UEY1LF159446
2020 GMC Sierra 3500HD
SLT Crew Cab 4WD
230,372 mi
$24,971
- 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:
- Quartz
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 115,000
- Stock #:
- 4281325
- VIN:
- 1GT49VEYXLF281325
2020 GMC Sierra 3500HD
AT4 Crew Cab 4WD
115,000 mi
$46,588
- 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:
- Summit White
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 96,500
- Stock #:
- IF76034A
- VIN:
- 1GT49WEY1MF186997
2021 GMC Sierra 3500HD
Denali Crew Cab 4WD
96,500 mi
$51,585
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Red Quartz Tintcoat
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 21,121
- Stock #:
- KF222090
- VIN:
- 1GT42WEYXKF222090
2019 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
21,121 mi
$58,225
- 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
$32,885
- 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:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 35,521
- Stock #:
- CPN5254A1
- VIN:
- 1GT49WE77LF322684
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
35,521 mi
$52,785
- 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:
- Red (Burgundy)
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 85,914
- Stock #:
- 205849020
- VIN:
- 1GT49WEY5LF191148
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
85,914 mi
$52,311
- 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
2021 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
126,779 mi
$46,785
- 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:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Dark Walnut/Dark Ash Gray
- Transmission:
- Automatic
- Mileage:
- 74,175
- Stock #:
- DS3055
- VIN:
- 1GT49WEY7LF228376
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
74,175 mi
$51,694
- 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
$43,276
- Year:
- 2019
- 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:
- Cocoa/Dark Sand
- Transmission:
- 6-Speed Automatic
- Mileage:
- 78,284
- Stock #:
- KF241642A
- VIN:
- 1GT42WEY8KF241642
-$1,000
2019 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
78,284 mi
$48,686
$47,686
CarGurus Analysis:
2020 GMC Sierra 3500HD
With 475 currently listed for sale and an average price of $51,286.00, 29.3% of 2020 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Sierra 3500HD 5 / 5 stars.
74.5% of 2020 Sierra 3500HD models on CarGurus are accident free.
- 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 (Ebony Twilight Metallic)
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 71,710
- Stock #:
- P6321
- VIN:
- 1GT49WEY1MF259253
2021 GMC Sierra 3500HD
Denali Crew Cab 4WD
71,710 mi
$54,193
- 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
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
117,092 mi
$46,797
- 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:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 109,500
- Stock #:
- 3226T164B
- VIN:
- 1GT49WEY6LF295213
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
109,500 mi
$49,621
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- Black
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 63,150
- Stock #:
- 1457
- VIN:
- 1GT49WEY2LF218791
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
63,150 mi
$56,497
- 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:
- White Frost Tricoat
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 127,897
- Stock #:
- 90304A
- VIN:
- 1GT49WEY9LF236222
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
127,897 mi
$44,298
- Year:
- 2019
- 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:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 143,699
- Stock #:
- 26345A
- VIN:
- 1GT42WEY0KF254529
2019 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
143,699 mi
$43,989
- 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:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 178,895
- Stock #:
- T18114
- VIN:
- 1GT49WE76MF116032
2021 GMC Sierra 3500HD
Denali Crew Cab 4WD
178,895 mi
$31,300
- Year:
- 2019
- 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:
- Brown
- Transmission:
- Automatic
- Mileage:
- 129,166
- Stock #:
- UF249471
- VIN:
- 1GT42WEY3KF249471
2019 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
129,166 mi
$39,220
- Year:
- 2019
- 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:
- Dark Ash with Jet Black Interior Accents
- Transmission:
- 6-Speed Automatic
- Mileage:
- 134,923
- Stock #:
- 8673
- VIN:
- 1GD42TCY1KF132291
2019 GMC Sierra 3500HD
Base Crew Cab LB DRW 4WD
134,923 mi
$28,271
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 360 hp 6L V8 Flex Fuel Vehicle
- Exterior color:
- White
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Gray
- Transmission:
- 6-Speed Automatic
- Mileage:
- 89,965
- Stock #:
- B52274
- VIN:
- 1GT42TCG0KF229350
2019 GMC Sierra 3500HD
Crew Cab 4WD
89,965 mi
$28,987
CarGurus Analysis: 2020 GMC Sierra 3500HD
Summary
With 475 currently listed for sale and an average price of $51,286.00, 29.3% of 2020 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Sierra 3500HD 5 / 5 stars.
74.5% of 2020 Sierra 3500HD models on CarGurus are accident free.
Why it stands out
The 2020 GMC Sierra 3500HD is a standout in the heavy-duty truck segment, known for its impressive towing and hauling capabilities, making it a preferred choice for those who need a reliable workhorse. With a maximum towing capacity of up to 35,500 pounds when properly equipped, it outperforms many competitors in its class. The Sierra 3500HD also offers a range of luxurious features, especially in higher trims like the Denali, which includes premium leather interiors and advanced technology for towing and off-roading. Owners appreciate its robust performance and comfort, although some have noted the absence of certain features like a CD player and the need for better lumbar support adjustments. Overall, the Sierra 3500HD combines rugged utility with a touch of luxury, appealing to both commercial users and those seeking a capable family vehicle.
Other model years to consider
- Average price: $69,144.00
- Good/great deal percentage: 33.9%
- User rating: 5 / 5
- Total listings: 1,287
- Average price: $56,587.00
- Good/great deal percentage: 33.8%
- Accident-free percentage: 91.2%
- Total listings: 1,186
- Average price: $76,713.00
- Good/great deal percentage: 33.3%
- User rating: 5 / 5
- Total listings: 1,204
This analysis is based on CarGurus' proprietary market data from July 13, 2026, CarGurus experts' opinions, and generative AI.
5.0 Overall rating
Filter by rating
Christine A
Reviewed a 2020 GMC Sierra 3500HD on Jun 16, 2023
Besides the bells and whistles we grabbed this dually because we pull a toy hauler. We went from a sturdy 2500 Dodge Ram to this beauty. We choose the dually 3500 due to the pulling capacity and payload as toy haulers are heavier in front to compensate for the weight that you can put in the back. We have no issues pulling it now and the truck does not squat because the support of the 4 tires. Other friends have regular 3500 and still have issues with the payload and had to put in more money into their vehicle to beef up the suspension when pulling a toy hauler because the payload is less. YOU WONT REGRET BUYING ONE!
Dwayne M
Reviewed a 2020 GMC Sierra 3500HD on Jan 2, 2022
The 2020 GMC Sierra 3500 HD is a great truck and investment. This truck is well built and drives great and is very comfortable to ride in. Plus has great looks.
bill z
Reviewed a 2020 GMC Sierra 3500HD on Oct 18, 2020
better than ford or ram, hard to beat gmc track record
Anonymous
Reviewed a 2020 GMC Sierra 3500HD on Jul 2, 2021
It is missing a CD player. The lumbar support needs more better adjustment.
2020 GMC Sierra 3500HD Trims
| Trim type | MSRP |
|---|---|
| Denali Crew Cab LB 4WD | $65,700 |
| Denali Crew Cab LB DRW 4WD | $66,900 |
| Base Crew Cab LB 4WD | $44,400 |
| Base Crew Cab 4WD | $44,200 |
| SLE Crew Cab 4WD | $48,200 |
| AT4 Crew Cab 4WD | $59,500 |
| SLT Crew Cab 4WD | $56,800 |
| Denali Crew Cab 4WD | $65,500 |
2020 GMC Sierra 3500HD Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2020 GMC Sierra 3500HD prices has changed over time.
See more price trends2020 GMC Sierra 3500HD Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest Prices in Los Angeles: The average price in Los Angeles, CA ($59,003) is the highest among the listed cities, likely reflecting higher demand and cost of living.
- Lowest Prices in Atlanta: Atlanta, GA ($38,245) offers the lowest average price, indicating a more price-sensitive market or higher inventory turnover.
- Inventory Levels Impact Pricing: Cities with higher inventory, such as Chicago (68 listings) and Dallas (68 listings), show competitive pricing around $54,048 and $55,880, respectively, suggesting a balance between supply and demand.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Los Angeles, CA | 45 | $59,003 |
| Philadelphia, PA | 70 | $58,998 |
| Chicago, IL | 68 | $54,048 |
| Dallas, TX | 68 | $55,880 |
| Houston, TX | 70 | $46,026 |
| Miami, FL | 53 | $46,900 |
| Washington, DC | 70 | $48,779 |
| Boston, MA | 57 | $52,997 |
| Atlanta, GA | 65 | $38,245 |
Pricing Analysis by Model Year
Key Insights
- Significant New-Car Premium: The 2026 GMC Sierra 3500HD is priced at $91,043, which is approximately 88.5% above its MSRP, indicating strong demand for the latest model.
- Depreciation Trends: Older models, such as the 2014 GMC Sierra 3500HD, show a significant drop in value, with an average price of $28,018, reflecting a depreciation of about 14.5% from its original MSRP.
- Best Value Years: The 2019 model is priced at $43,199, showing a modest depreciation of only -1.5%, making it a potentially attractive option for buyers seeking value.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 | $48,200 | $91,043 | +88.5% |
| 2025 | $47,500 | $77,563 | +63.4% |
| 2024 | $46,600 | $70,653 | +51.6% |
| 2023 | $43,400 | $58,758 | +35.3% |
| 2022 | $41,400 | $55,685 | +34.5% |
| 2021 | $37,400 | $53,178 | +42.1% |
| 2019 | $40,800 | $43,199 | -1.5% |
| 2018 | $36,100 | $41,891 | +16.1% |
| 2017 | $35,290 | $38,299 | +8.5% |
| 2016 | $34,635 | $35,992 | +3.9% |
| 2015 | $34,295 | $35,291 | +2.9% |
| 2014 | $32,805 | $28,018 | -14.5% |
These recommendations are based on CarGurus' proprietary market data from July 16, 2026, CarGurus experts' opinions, and generative AI.
FAQs
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