Used 2021 GMC Sierra 3500HD for Sale near Prince Edward Island
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CarGurus Analysis: 2021 GMC Sierra 3500HD
Summary
With 95 currently listed for sale and an average price of $68,980.00 CAD, 22.1% 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 stands out in the heavy-duty truck segment with its impressive combination of towing capabilities, luxurious design options, and smart technology features. As a continuation of the fifth generation, the Sierra 3500HD exemplifies refinement; it offers a robust 6.6-litre Duramax turbodiesel engine producing 445 horsepower and a staggering 910 lb-ft of torque, making it capable of towing up to 16,100 kilograms. The luxurious Denali trims provide a high-end driving experience with premium materials and features including a heads-up display and advanced safety technologies. Despite its strengths, some users find the higher trims to be prohibitively expensive and note challenges with maneuverability in tight spaces.
Other model years to consider
- Average price: $84,537.00 CAD
- Good/great deal percentage: 32.5%
- User rating: 5 / 5
- Total listings: 154
- Average price: $76,995.00 CAD
- Good/great deal percentage: 28.1%
- User rating: Not available
- Total listings: 160
- Average price: $96,368.00 CAD
- Good/great deal percentage: 33.1%
- User rating: 5 / 5
- Total listings: 127
This analysis is based on CarGurus' proprietary market data from June 8, 2026, CarGurus experts' opinions, and generative AI.
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5.0 Overall rating
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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 |
|---|---|
| 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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