Used 2021 GMC Sierra 3500HD for Sale Nationwide
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CarGurus Analysis:
2021 GMC Sierra 3500HD
With 90 currently listed for sale and an average price of $64,294.00 CAD, 26.7% of 2021 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favourably reviewed: Owners rated the 2021 GMC Sierra 3500HD 5 / 5 stars.
100.0% of 2021 Sierra 3500HD models on CarGurus are accident free.
CarGurus Analysis: 2021 GMC Sierra 3500HD
Summary
With 90 currently listed for sale and an average price of $64,294.00 CAD, 26.7% of 2021 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.
Favourably reviewed: Owners rated the 2021 GMC Sierra 3500HD 5 / 5 stars.
100.0% 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. This model is part of the fifth generation, which has seen significant improvements in technology and performance since its debut. The Sierra 3500HD is designed for those who need a reliable workhorse, offering a maximum towing capacity of up to 16,100 kilograms (35,500 pounds) when properly equipped. Its luxurious Denali trim provides a refined interior with premium materials and advanced technology, making it appealing for both work and leisure. The truck's accident-free status and high user ratings reflect its reliability and owner satisfaction, making it a strong contender in the heavy-duty truck market.
Other model years to consider
- Average price: $82,988.00 CAD
- Good/great deal percentage: 32.4%
- User rating: 5 / 5
- Total listings: 170
- Average price: $75,189.00 CAD
- Good/great deal percentage: 31.6%
- User rating: Not available
- Total listings: 171
- Average price: $93,530.00 CAD
- Good/great deal percentage: 35.6%
- User rating: 5 / 5
- Total listings: 146
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
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 |
|---|---|
| SLT Crew Cab 4WD | $57,400 |
| SLE Double Cab LB 4WD | $47,800 |
| SLE Crew Cab 4WD | $49,400 |
| 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.
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