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Used
2021 GMC Sierra 2500 trucks
for sale
near
Buford, GA
- 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 AT4
Vehicle information
Features
Reviews
Jeff Williams provided outstanding customer service.
Jeff Williams provided outstanding customer service. He went above and beyond in ensuring my truck was taken care of. He showed personal caring and commitment!
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!
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Craige was great and squared us away in our 2026 Rogue.
Craige was great and squared us away in our 2026 Rogue. We traded in our car because of expensive repairs and are happy with our purchase!
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 AT4
Vehicle information
Features
Reviews
We did all of our communication over the phone and text
We did all of our communication over the phone and text and the sale representatives were very punctual and helpful in the purchase of our car. We were even able to fill out all of the paperwork online so when it came time to go in and pick the car up everything was ready and seamless. Overall throughly enjoyed our experience at ALM.
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 Base
Vehicle information
Features
Reviews
When we first came in, we spoke with Brian.
When we first came in, we spoke with Brian. He had a high energy and told us he would walk us through the process. We saw a few vehicles that i didnt care for but we worked until he found the vehicle i wanted and I appreciate that! You said the 4th would be the charm and you were right. I got the best deal ever. When it was time for paperwork, everything was on point and very thorough. I couldn’t have asked for anyone better than you. Anytime someone needs a new vehicle, i will send them to you. Very professional and very knowledgeable. He made the process very easy and i am very thankful. Thank you Brian.
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 AT4
Vehicle information
Features
Reviews
Buying a car for the first time can be stressful, but
Buying a car for the first time can be stressful, but Esthephany made it so easy. She explained everything clearly and made me feel comfortable the whole time. Thank you!!
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.
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I just bought a brand new car, I needed to get it
I just bought a brand new car, I needed to get it serviced and Manny Platero helped me
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Excellent staff.
Excellent staff. Lewis sold me a car that fit my family perfectly. He was extremely helpful. The financial guy was nice and walked me through all the packages they had as well as giving me honest suggestions with me and my family in mind. Amazing experience overall.
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Absolutely the quickest and most stress-free vehicle
Absolutely the quickest and most stress-free vehicle purchase I have ever made! Everything went smoothly and the deal was processed as promised. Our salesperson, a young man named C.J., was knowledgeable and easily surpassed the service I’ve received at BMW, Mercedes-Benz, and other quality dealerships. He is an honest, no-nonsense, no pressure, type of guy and a great representation for Troncalli. I can’t say enough about this young man and the pleasant experience we had while purchasing our new car. Kudos to his parents who definitely raised him well. Wish I could give him more than 5 stars! The whole team was friendly and welcoming. I definitely recommend and will undoubtedly return when we are in the market again for a vehicle. I wouldn’t be at all surprised if CJ is promoted to manager by then.
Used
2021 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Denise
Great people, take time with customers, and do great work above and beyond duty.
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Amazing selection of quality cars & Excellent service.
Amazing selection of quality cars & Excellent service. The staff is very helpful and will take care of all your needs and provide you the best deal in the market! 10/10 Experience!
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Bought a 2017 4runner from Hasin at Atlanta car Sales,
Bought a 2017 4runner from Hasin at Atlanta car Sales, and I can’t give a bigger blessing from a skeptical used car lot buyer. Not only did he DIRECTLY answer my questions and concerns over the phone, he also went out of his way to pick me up from the airport when I flew in (Yes, I flew in from Texas because the price was that great). He brought the truck with him so I got to have a great long test drive and was very personable the entire way back to the dealership. Found a chip in the windshield and they discounted the vehicle so I can get it fixed back home. Sat down, and was on my way within about 45 mins. Again, if you are looking for a vehicle, and find one here, BUY BUY BUY! Thanks again Hasin!
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Very helpful and an overall good experience.
Very helpful and an overall good experience. I would recommend them and would use them in the future.
There are 8 matching cars close to your year range.
Used
2020 GMC Sierra 2500 Denali Ultimate
Vehicle information
Features
Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
Vehicle information
Features
Used
2023 GMC Sierra 2500 Denali
Vehicle information
Features
Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features
Used
2020 GMC Sierra 2500 AT4
Vehicle information
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GMC Sierra 2500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 2500 | $87,710 | |
| 2025 GMC Sierra 2500 | $74,964 | 2 Good deals |
| 2024 GMC Sierra 2500 | $74,814 | 13 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 $50,821, with pricing starting at $23,797.
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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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.
