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Used
2021 GMC Sierra 2500 trucks
for sale
near me
- 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
Vehicle information
Features
Reviews
100% Recomendation
Excellent service. I dealt with Brad and he was very cooperative and helpful in finding me a truck that both suited my needs and had me leaving the dealership wth a smile on my face. He made the financing process as painless as possible and was able to get me a great deal without even having to set foot on the property. I drove all the way from southern CT to pick up my truck and it was exactly as it was described, not a single detail left out and no unwanted surprises when I got there. If you're looking for a truck, look no further. Great guys and great service all around.
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
BEST EXPERIENCE
Talked to Corey the salesman and came by to look at their 2015 mustang gt premium. He wasn't pushy and let me take my time looking at the car. I told him it all came down to what they could give me on my trade in because that was the issue since I still had a new car. They gave me more than any other dealer offered me which was great because I wanted to stay below a certain amount OTD. The whole process was quick and hassle free. Corey, Ryan, Matt and Katie are awesome. Thanks Dealer Trade Outlet for a great experience.
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
I am writing a review of this dealership based on my
I am writing a review of this dealership based on my experience dated 02/15/ 2025. I purchased a 2025 pacific on Saturday. I had been in contact with the salesman Taz and several manager over the phone and e mail in hopes of making my time at the dealership as quick as possible. even though I had prearrange before I got there as much as possible, I had selected the vehicle and verified that it was there and told them what type of transaction, I arrived early at 10:30 am in hopes of leaving before the weather turned bad. I asked several time that I wanted to leave soon, but I could not leave until 5:30 in the evening when it was pouring down rain. My best experience was with The salesperson, Taz who assisted me every step of the way as much as he could. He is a true credit to the dealership and I really appreciated his help along the way as I am an elderly disabled vet. He made sure that my vehicle was prepped and transfer of my equipment was done WAJ
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 AT4
Vehicle information
Features
Reviews
Absolutely outstanding!! AGAIN!!
This is the second time I have purchased from Country Diesels. I live almost 100 miles away, and traveled back to them once again, because I trust and believe in these guys and the trucks they sell. EVERY aspect of my buying experience was nothing short of first class. I will not go anywhere else, and I WILL be back when it is time for another purchase. Thanks so much Kevin and Chris!!
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
Great dealershio
Kaley and the rest of the crew were great. Gave me what I expected on my trade-in. No problems with the whole process. When I told them that I was going to check out another dealership, they did not try hold me back from going. Ended up buying from them.
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 had a wonderful experience with Caleb Polen, both
I had a wonderful experience with Caleb Polen, both trading in my vehicle and purchasing the new one. I would highly recommend Leesburg Buick GMC and Caleb.

Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
????? 5th car at this location! Another stellar
????? 5th car at this location! Another stellar experience. I will always go out of my way to drive to this location. Thanks again Koons for making it easier!
There are 11 matching cars close to your year range.






Used
2023 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2023 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2023 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
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Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2023 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2023 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Vehicle information
Features

Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
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GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 2500 | $40,895 | 29 Great deals |
2024 GMC Sierra 2500 | $36,900 | 60 Great deals |
2023 GMC Sierra 2500 | $28,995 | 21 Great deals |
2022 GMC Sierra 2500 | $29,780 | 78 Great deals |
2020 GMC Sierra 2500 | $13,980 | 23 Great deals |
2019 GMC Sierra 2500 | $18,988 | 26 Great deals |
2018 GMC Sierra 2500 | $16,995 | 25 Great deals |
2017 GMC Sierra 2500 | $21,990 | 18 Great deals |
2016 GMC Sierra 2500 | $13,995 | 16 Great 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 $54,866, with pricing starting at $22,980.
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 4.1 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 4.8
- Interior 4.6
- Performance 4.4
- Value 4.0
- Exterior 4.6
- Reliability 4.1
78% of drivers recommend this car
- Comfort 4.8
- Interior 4.6
- Performance 4.4
- Value 4.0
- Exterior 4.6
- Reliability 4.1
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.
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Research the 2021 GMC Sierra 2500
Compare the 2021 GMC Sierra 2500
2021 GMC Sierra 2500 by popular city
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2021 GMC Sierra 2500 in Dallas, TX
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GMC Sierra 2500 trims
-
GMC Sierra 2500 2021 Denali
6 Great Deals out of 194 listings starting at $32,950
-
GMC Sierra 2500 2021 AT4
1 Great Deal out of 107 listings starting at $22,980
-
GMC Sierra 2500 2021 SLE
6 Great Deals out of 35 listings starting at $31,999
-
GMC Sierra 2500 2021 SLT
8 Great Deals out of 33 listings starting at $40,250
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9 Great Deals out of 23 listings starting at $28,711
Used 2021 GMC Sierra 2500 by body style
2021 GMC Sierra 2500 by fuel type
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