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Used
2021 GMC Sierra 2500 trucks
for sale
near
Orlando, FL
- 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 Denali Ultimate
Vehicle information
Features
Reviews
I had a great experience with Sharon Munoz.
I had a great experience with Sharon Munoz. She was incredibly patient and a pleasure to work with.
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 SLE
Vehicle information
Features
Reviews
Madison was very helpful and very consistent in her
Madison was very helpful and very consistent in her efforts and checking on my current interest. She is a very good sales person.
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 Denali
Vehicle information
Features
Reviews
Our salesman Mike did a great job listening to us and
Our salesman Mike did a great job listening to us and finding the vehicle we were looking for with all the options we wanted. The whole process was easy and stress free. I would recommend Mike to a friend because of how great he worked with us.
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 SLT
Vehicle information
Features
Reviews
Brandon was terrific!
Brandon was terrific! He goes over the car very carefully and even paired my phone for me! If you need a car. Go see Brandon!
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 Denali
Vehicle information
Features
Reviews
Great experience.
Great experience. It was fun. Got what we wanted at a good price. Truck had a lot of cool features and they took the time to show me how they worked
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 Denali
Vehicle information
Features
Reviews
Willem was extremely professional and made an easy
Willem was extremely professional and made an easy transaction. Rachel followed up three times to make sure I was satisfied. Great team to work with
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
everyone is great there
I really liked everyone there that we met. When I drove the Jeep home Steve even was talking about maybe trading the truck in later. Mike was really a great salesman, I would give him 6 stars.
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Jaime was very helpful with the buying process along with
Jaime was very helpful with the buying process along with others that assisted us. Thank you so much for helping us with a smooth and quick process.
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
David was excellent to work with, he was very
David was excellent to work with, he was very knowledgeable about the Equinox and was able to answer all my questions. He made going through all the paperwork easy and we will definitely want to work with him again.
Certified
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
King ranch
I have purchased many vehicles from Mcmullen Ford. They are always friendly and professional. They treat me fairly on the price. They deliver my vehicle to me.
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I've purchased probably 20 new vehicles in my life thus
I've purchased probably 20 new vehicles in my life thus far. This was the best purchase experience I've had to date. Dan, Kasey and the service team were exceptionally patient...I had a lot of questions. The service team was also exceptionally helpful as well answering some very detailed and specific questions with respect to the vehicle I was purchasing. I have always liked GM vehicles but having a great dealer to stand behind the product is more important than anything to me. The facility is state of the art and I like that but the people seem genuinely interested in doing right by me. If they continue to treat me as they have I will have little reason to ever look anywhere else for a vehicle. Really a great purchase experience and a really good deal as well.
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Staff were very kind and the job was completed in a
Staff were very kind and the job was completed in a timely and reasonable manner.
Certified
2021 GMC Sierra 2500 Base
Vehicle information
Features
Reviews
Garfield Sang provided a great used car buying
Garfield Sang provided a great used car buying experience. He was knowledgeable and honest and took time to answer all of our questions.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Quick buying process through online site.
Quick buying process through online site. Sales team was helpful and quick to get me out the door. I was pleased
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Mike Rose was our hero when we were looking for a almost
Mike Rose was our hero when we were looking for a almost new Tahoe. We were in Hickory and Morganton area, we were looking at a Tahoe at another Large dealer in Hickory, they SOLD it while we were looking! Called Mike Rose at Parks GMC and he took our name and number late February, 3rd He told us what he had on the lot and held it for us overnight. We arrived Feb 4th. to look at the 2025 Tahoe, High Country. We agreed on price and we drove it home. Love Mike Rose's attention to detail, southern charm, very nice, going above and beyond to help us. He was patient teaching us the new buttons and devices on the High Country Tahoe. We will purchase another new vehicle from him next week. People are important! Mike listened and treated us with respect and Southern Hospitality when we were looking for a vehicle.
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
And I also like to give a big shout out to the finance
And I also like to give a big shout out to the finance manager Mr. Garcia. He was a big help getting my payment down a little more. He had a great personality and we love speaking with him overall. I had a actually fantastic carbine experience. Thank you Mr. Garcia
Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I had a great experience coming in for an oil change.
I had a great experience coming in for an oil change. The drop-off process was quick and convenient, and they even offered me a ride to work, which I appreciated, although my job is close enough that I chose to walk. My appointment was at 9:00 AM, but I dropped my car off at 8:00 AM before heading to work, and by 10:15 AM they had already called to let me know it was finished. The service was fast, efficient, and everyone was very friendly. I have always been treated wonderfully anytime I?ve had my vehicle serviced here. Highly recommend! ?????
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
"I just picked up a 2026 GMC Sierra 1500 Denali Ultimate
"I just picked up a 2026 GMC Sierra 1500 Denali Ultimate from Ed Martin Buick GMC, and I couldn't be happier with the experience. Arthur-Zarddy Gwion Jr. was phenomenal to work with. He treated the whole process with the level of professionalism you’d expect when buying a flagship truck. He was transparent, knowledgeable about the new tech, and made sure every detail was perfect. If you’re looking for a high-end vehicle and want a high-end experience to match, go see Arthur!"
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
I would like to thank Josh Seyfert for the excellent
I would like to thank Josh Seyfert for the excellent customer service! You made everything so easy! Thank you again Josh Seyfert!
Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Dino, Preston, and the entire management team were
Dino, Preston, and the entire management team were fantastic!! Thank you for a prompt and quality experience!
GMC Sierra 2500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 2500 | $89,355 |
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 $50,908, with pricing starting at $23,495.
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.