Used 2021 GMC Sierra 1500 for Sale near Madison, WI
203 results
CarGurus Analysis:
2021 GMC Sierra 1500
With 6,483 currently listed for sale and an average price of $36,204.00, 31.7% of 2021 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Sierra 1500 4.9 / 5 stars.
80.1% of 2021 Sierra models on CarGurus are accident free.
The 2021 GMC Sierra 1500 stands out for its rugged capability combined with a luxurious interior and advanced technology features, though some users noted minor annoyances regarding options and standard equipment.
CarGurus Analysis: 2021 GMC Sierra 1500
overall
Summary
With 6,483 currently listed for sale and an average price of $36,204.00, 31.7% of 2021 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Sierra 1500 4.9 / 5 stars.
80.1% of 2021 Sierra models on CarGurus are accident free.
The 2021 GMC Sierra 1500 stands out for its rugged capability combined with a luxurious interior and advanced technology features, though some users noted minor annoyances regarding options and standard equipment.
Why it stands out
The 2021 GMC Sierra 1500 distinguishes itself with its appealing blend of performance, technology, and luxury. An attractive choice among full-size trucks, it features a variety of powertrain options including a noteworthy Duramax turbodiesel inline-six engine, which offers substantial torque and efficiency. The Sierra is praised for its comfortable cabin, advanced tech features like the customizable MultiPro tailgate, and the availability of high-end trims such as the Denali, which elevates its status in the truck market. Although some interior materials feel dated, the overall design offers comfort and ample room. The Sierra excels in functionality, making it a strong contender for those looking for both utility and refinement.
Other model years to consider
- Average price: $53,193.00
- Good/great deal percentage: 34.9%
- User rating: 5 / 5
- Total listings: 8,328
- Average price: $43,679.00
- Good/great deal percentage: 31.5%
- User rating: 5 / 5
- Total listings: 8,555
- Average price: $51,113.00
- Good/great deal percentage: 33.2%
- User rating: 4.6 / 5
- Total listings: 9,613
This analysis is based on CarGurus' proprietary market data from April 27, 2026, CarGurus experts' opinions, and generative AI.
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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 Crew Cab RWD | $45,700 |
| SLT Crew Cab RWD | $47,500 |
| Elevation Double Cab 4WD | $46,400 |
| SLE Crew Cab 4WD | $47,100 |
| Elevation Crew Cab 4WD | $49,000 |
| Denali Crew Cab 4WD | $59,300 |
| SLT Crew Cab 4WD | $50,800 |
| AT4 Crew Cab 4WD | $54,700 |
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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