Used 2021 GMC Sierra 1500 for Sale near Ontario
114 results
CarGurus Analysis:
2021 GMC Sierra 1500
With 576 currently listed for sale and an average price of $41,759.00 CAD, 32.6% of 2021 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favourably reviewed: Owners rated the 2021 GMC Sierra 1500 4.9 / 5 stars.
100.0% of 2021 Sierra 1500 models on CarGurus are accident free.
The 2021 GMC Sierra 1500 impressed owners with its luxurious features, exceptional engine performance, and advanced technology.
CarGurus Analysis: 2021 GMC Sierra 1500
overall
Summary
With 576 currently listed for sale and an average price of $41,759.00 CAD, 32.6% of 2021 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favourably reviewed: Owners rated the 2021 GMC Sierra 1500 4.9 / 5 stars.
100.0% of 2021 Sierra 1500 models on CarGurus are accident free.
The 2021 GMC Sierra 1500 impressed owners with its luxurious features, exceptional engine performance, and advanced technology.
Why it stands out
The 2021 GMC Sierra 1500 distinguishes itself by combining luxury with functionality, appealing especially to buyers seeking premium features in a full-size pickup. The standout offering includes an optional Duramax turbodiesel inline-six engine, which provides robust performance with 277 horsepower and exceptional torque. This allows for impressive towing capacities, reaching up to 4,173 kilograms (9,200 pounds). The Sierra 1500 is noted for its high-quality interior and technological advancements, such as a 15-inch head-up display and a driver-oriented infotainment system that supports wireless Apple CarPlay and Android Auto. However, some owners mention minor irritations, such as the absence of a key fob and the requirement for additional packages to unlock full features. Despite these drawbacks, the Sierra remains highly regarded in its class.
Other model years to consider
- Average price: $68,066.00 CAD
- Good/great deal percentage: 32.2%
- User rating: 5 / 5
- Total listings: 1,334
- Average price: $49,421.00 CAD
- Good/great deal percentage: 31.2%
- User rating: 5 / 5
- Total listings: 786
- Average price: $57,580.00 CAD
- Good/great deal percentage: 33.2%
- User rating: 4.6 / 5
- Total listings: 1,478
This analysis is based on CarGurus' proprietary market data from June 1, 2026, CarGurus experts' opinions, and generative AI.
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5.0 Overall rating
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Matthew B
Reviewed a 2021 GMC AT4 Crew Cab 4WD on Jan 7, 2025
Best truck I have driven! Highway speeds are great and feels like I’m driving a Cadillac.
Brandon S
Reviewed a 2021 GMC SLT Crew Cab 4WD on Apr 1, 2026
Love the SLT and all the features it has definitely a great value and good driving truck with good suspension and quality
Anonymous
Reviewed a 2021 GMC AT4 Crew Cab 4WD on Jun 20, 2024
When the sales rep said “It has everything but the kitchen sink” I’m pretty sure it has those in it too! This is the most rugged yet luxurious truck I’ve ever ridden in much less owned. I can’t say enough about the features that makes everything from lining up with a trailer hitch to getting warnings via through the seat vibration when getting too close to something when backing up. Heck it even has a forward facing camera that helps up front. Two thumbs all the way around!
Donald P
Reviewed a 2021 GMC Sierra 1500 on Oct 8, 2023
I love everything about this truck, so much I bought one. I got one with the 3liter duramax. Hopefully it’ll be the last truck I’ll ever own.
2021 GMC Sierra 1500 Trims
| Trim type | MSRP |
|---|---|
| Elevation Double Cab 4WD | $46,400 |
| SLE Double Cab 4WD | $44,700 |
| Crew Cab 4WD | $39,700 |
| SLE Crew Cab 4WD | $47,100 |
| SLT Crew Cab 4WD | $50,800 |
| Denali Crew Cab 4WD | $59,300 |
| AT4 Crew Cab 4WD | $54,700 |
| Elevation Crew Cab 4WD | $49,000 |
2021 GMC Sierra 1500 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2021 GMC Sierra 1500 prices has changed over time.
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