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*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
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Used
2021 GMC Sierra 2500 trucks
for sale
near
Candia, NH
- Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.






Used
2021 GMC Sierra 2500 Base
Vehicle information
Features
Reviews
Great no haggle price and trade best buying experience
Great no haggle price and trade best buying experience I’ve ever had buying new vehicle and this is my 30th!
Beautiful truck
I love my 2021 GMC Denali 2500HD. I have gotten more complements on this truck than any other vehicle that I have owned. I get great highway fuel milage average 19-26mpg,which is great for a heavy duty truck!






GMC Certified
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Fast friendly, and didn?
Fast friendly, and didn?t try to talk me into anything I didn?t want! Thorough as well! Such a great experience! This was my second purchase from Banks and I?ll likely never go anywhere else!
Best truck I ever owned
Love my GMC. Owned a Chevy and this absolutely beats it hands down. Never had any issues. Inside is very comfortable and can't imagine driving anything else






Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Friendly, quality service
I recently brought my car in for some emergency service. I had to have multiple items repaired or replaced. The staff informed me every step of the way, calling with updates and answering any questions I had. The service team was friendly, knowledgeable and able to explain things to me in terms I would understand. Ben, Will and Ryan were all a pleasure to work with. They've got a great team in the service department. And the best news is that my car left in better shape than it arrived :)
GMC 2500 HD AT4
This is the first diesel I have owned. The power is amazing and I really like the room inside the cab. This truck is a beast... Love it!






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
AWESOME COMPANY!
I've not been to the lot yet so can't rate anything but customer service. And their customer service is A . By far, the nicest and most honest dealership I've ever spoken to.
Never had one. Always wanted one and love it.
I love my Denali. Beautiful truck inside out. When I drive down the road all heads turn. I couldn't have made a better choice. That's Cortez for you good service.






Used
2021 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Thank You !!!!!!
I like to thank Tim Jr and the service department for helping me with tires for my truck. As always was greeted with great customer service and the service tech did a great job . Thanks again Tim and team great experience every time.
Early to tell truck has less than 100 miles
Truck was bought specifically to our travel trailer. We have to wait for 1000 break in before we can tow the trailer. So far the truck is very quiet, smooth running, & comfortable to drive. We were pleasantly surprised at how much interior storage space is available. Having the bed steps before rear tires and in the bumper sides is very nice. Bed rails are even with my shoulders so the steps get used a lot.






Vehicle information
Features
Reviews
Great experience
I found DC Motors after looking and speaking with many dealerships about a particular vehicle. WHAT A DIFFERENCE! I had a great experience and recommend them. The team at DC Motors provided vehicle information above and beyond anyone else, with lots tips, and genuinely interested in my satisfaction with the vehicle. They are comfortable to work with, honest and forthcoming with their knowledge of the vehicle and do what they say they will do. They are at the top of my list for the next time I am looking for a vehicle.






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Matt at Tim's truck capital was awesome to work with.
Matt at Tim's truck capital was awesome to work with. He answered all my questions and was willing to work with me being an out of state purchase. I found a truck in state instead, but I'd definitely work with Matt again if I need another work truck. Great business with a great selection of trucks
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
I had a very good experience super easy sales process.
I had a very good experience super easy sales process. The salesman was a no pressure great guy as was the Finance department. Thank you
Vehicle information
Features
Reviews
I recommend Banks and especially our sales person Kevin
I recommend Banks and especially our sales person Kevin Mathis! He was knowledgeable, personable, and efficient. We also had a great experience with his manager and finance manager. Overall, I can’t say enough good things about the experience and I love my Denali. You are shopping for a new vehicle or use vehicle. I highly recommend banks and Kevin Mathis

Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Excellent Experience with DC Motors
My Name is Scott from Massachusetts. I will be recommending this dealership to friends. The entire experience from beginning to end with DC Motors was excellent. The guys here went above and beyond for me and made me an extremely happy customer. They did exactly what they said they would do plus more. Thank you, DC Motors!!
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2022 GMC Sierra 2500 Denali
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2023 GMC Sierra 2500 SLE
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2022 GMC Sierra 2500 AT4
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2023 GMC Sierra 2500 AT4
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2019 GMC Sierra 2500 SLE
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Used
2020 GMC Sierra 2500 AT4
Vehicle information
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Used
2022 GMC Sierra 2500 AT4
Vehicle information
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GMC Certified
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2020 GMC Sierra 2500 Denali
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GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 2500 | $69,750 | |
2025 GMC Sierra 2500 | $51,655 | 2 Good deals |
2024 GMC Sierra 2500 | $46,999 | 15 Good deals |
About the 2021 GMC Sierra 2500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 0
- Transmission
- 6-Speed A/T
- Engine
- 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

How much does the 2021 GMC Sierra 2500 cost?
The 2021 GMC Sierra 2500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 2500 is $53,727, with pricing starting at $27,455.
What are some similar vehicles and competitors of the 2021 GMC Sierra 2500?
The 2021 GMC Sierra 2500 compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 2500 reliable?
The 2021 GMC Sierra 2500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 2500 owners.
Is the 2021 GMC Sierra 2500 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 2500.
- Comfort 4.7
- Interior 4.6
- Performance 4.3
- Value 3.9
- Exterior 4.6
- Reliability 4.0
75% of drivers recommend this car
- Comfort 4.7
- Interior 4.6
- Performance 4.3
- Value 3.9
- Exterior 4.6
- Reliability 4.0
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 172" AT4 | 4WD Crew Cab 159" AT4 |
Inventory price | |
Starting at $59,300 | Starting at $59,100 |
Combined MPG | |
0 | 0 |
Engine | |
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Base (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
4WD Crew Cab 159" | 2WD Crew Cab 172" | 4WD Crew Cab 172" | 2WD Crew Cab 159" | 2WD Double Cab 162" | 4WD Double Cab 162" | 4WD Double Cab 149" | 2WD Double Cab 149" | 2WD Reg Cab 142" | 4WD Reg Cab 142" |
Inventory price | |||||||||
Starting at $43,400 | Starting at $40,800 | Starting at $43,600 | Starting at $40,600 | Starting at $39,000 | Starting at $41,800 | Starting at $41,600 | Starting at $38,800 | Starting at $36,200 | Starting at $39,000 |
Combined MPG | |||||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Engine | |||||||||
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Denali (2 styles)
Style | |
---|---|
4WD Crew Cab 172" Denali | 4WD Crew Cab 159" Denali |
Inventory price | |
Starting at $65,700 | Starting at $65,500 |
Combined MPG | |
0 | 0 |
Engine | |
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLE (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
2WD Crew Cab 172" SLE | 4WD Crew Cab 159" SLE | 2WD Crew Cab 159" SLE | 4WD Crew Cab 172" SLE | 2WD Double Cab 162" SLE | 2WD Double Cab 149" SLE | 4WD Double Cab 149" SLE | 4WD Double Cab 162" SLE | 4WD Reg Cab 142" SLE | 2WD Reg Cab 142" SLE |
Inventory price | |||||||||
Starting at $45,600 | Starting at $48,200 | Starting at $45,400 | Starting at $48,400 | Starting at $43,800 | Starting at $43,600 | Starting at $46,400 | Starting at $46,600 | Starting at $44,400 | Starting at $41,600 |
Combined MPG | |||||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Engine | |||||||||
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLT (8 styles)
Style | |||||||
---|---|---|---|---|---|---|---|
4WD Double Cab 162" SLT | 2WD Double Cab 149" SLT | 2WD Double Cab 162" SLT | 4WD Double Cab 149" SLT | 4WD Crew Cab 159" SLT | 2WD Crew Cab 159" SLT | 2WD Crew Cab 172" SLT | 4WD Crew Cab 172" SLT |
Inventory price | |||||||
Starting at $54,600 | Starting at $51,600 | Starting at $51,800 | Starting at $54,400 | Starting at $56,200 | Starting at $53,400 | Starting at $53,600 | Starting at $56,400 |
Combined MPG | |||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Engine | |||||||
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
Research the 2021 GMC Sierra 2500
Compare the 2021 GMC Sierra 2500
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