Used 2020 GMC Sierra 3500HD for Sale Nationwide
469 results
CarGurus Analysis:
2020 GMC Sierra 3500HD
With 483 currently listed for sale and an average price of $50,999.00, 31.7% 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 4.6 / 5 stars.
74.5% of 2020 Sierra 3500HD models on CarGurus are accident free.
CarGurus Analysis: 2020 GMC Sierra 3500HD
Summary
With 483 currently listed for sale and an average price of $50,999.00, 31.7% 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 4.6 / 5 stars.
74.5% of 2020 Sierra 3500HD models on CarGurus are accident free.
Why it stands out
The 2020 GMC Sierra 3500HD distinguishes itself as a heavy-duty pickup truck that combines formidable towing capabilities with a luxurious driving experience. With impressive hauling and towing capacity, the Sierra 3500HD can tow up to 35,500 pounds when properly configured, setting a strong benchmark in its class. It offers a range of engine options, including a robust 6.6-liter Duramax turbodiesel V8 that delivers exceptional torque and power for serious work requirements. Buyers appreciate its refinement compared to competitors, particularly in higher trim levels like the Denali. While it excels in performance and luxury, some owners desire additional features like improved lumbar support in the seating, and it may feel unwieldy in tight parking situations. The Sierra 3500HD continues to outperform its competitors such as the Ford F-350 Super Duty and the Ram 3500 with its blend of value retention and reliability.
Other model years to consider
- Average price: $58,305.00
- Good/great deal percentage: 33.7%
- User rating: 5 / 5
- Total listings: 1,322
- Average price: $69,617.00
- Good/great deal percentage: 33.1%
- User rating: 5 / 5
- Total listings: 1,359
- Average price: $52,910.00
- Good/great deal percentage: 32.2%
- User rating: 5 / 5
- Total listings: 701
This analysis is based on CarGurus' proprietary market data from March 30, 2026, CarGurus experts' opinions, and generative AI.
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4.6 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 |
|---|---|
| SLE LB 4WD | $44,400 |
| Base Double Cab LB 4WD | $42,600 |
| Base Crew Cab LB 4WD | $44,400 |
| Base Crew Cab 4WD | $44,200 |
| SLE Crew Cab 4WD | $48,200 |
| SLT Crew Cab 4WD | $56,800 |
| AT4 Crew Cab 4WD | $59,500 |
| 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.
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