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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
Haslet, TX
- 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
Blessing in disguise
They helped me into a great little car when I didnt think I could get into anything. Thank you Crockett, Matt and Mike yall were a huge blessing. I love my Camry
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 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
Taylor was very helpful and my truck was ready right on
Taylor was very helpful and my truck was ready right on time. I would definitely like to have her again as my service advisor!
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
Overall, Vandergriff Chevrolet service dept.
Overall, Vandergriff Chevrolet service dept. did an excellent job on my repair. With an extended warranty, the repairs cost nothing. But if I do critique anything, is the trying to get me to spend $1,200 in new battery cables. There was nothing wrong with them.
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
I went in and they worked with me quickly on the truck
I went in and they worked with me quickly on the truck that I was looking at and addressed all of the issues/concerns that I had immediately. I highly recommend this place if you’re looking for a pick up.
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
Several sales personal where informative and
Several sales personal where informative and knowledgeable in customer service. I didn’t purchase a vehicle but will give Vanguard the first choice at sales.






Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Best Car Buying Experience Ever!!
Jose the Sales Manager listened to what I wanted and found the vehicle at another dealership and brought it over. Briana in Sales showed me all the features and explained how everything works. She even helped me get the app set up on my phone. David in Finance was so friendly and made the process easy. I have told all my friends how nice everybody was to me and this was really a no-stress day. I love them. I wish I could buy a new vehicle every year so I can go back over and over.






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Great place to buy
I have bought several trucks from Kevin, they are my go to place for a good deal. Can't recommend them enough. They even got me a great rate on financing.






Used
2021 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I look forward to buying here again
We were pressed for time & needed a good, reliable truck. Our young son was leaving for Illinois in a few days. We almost literally ran into Kevin on his way out of the gate-Lol! He stayed a little late & showed us a great F150 trade-in he had just gotten & made a great deal out of it for us. He had it detailed, inspected & mechanically checked out for Josh to get on his way. I believe Kevin was sincerely invested in our son’s well-being for this road trip. Of course, Josh made it without a hitch! Thanks again, Kevin & God’s blessings on you, your family & your great business! 👍🏻






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Great buying experience, much better than other
Great buying experience, much better than other dealerships for buying a vehicle. They didn't force us to add an extended warranty or other typical dealership nonsense.






Vehicle information
Features
Reviews
This dealership sells vehicles with salvage titles, I
This dealership sells vehicles with salvage titles, I have no interest in buying a salvage title vehicle
There are 20 matching cars close to your year range.






Used
2023 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
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Used
2023 GMC Sierra 2500 Base
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features


Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Certified
2022 GMC Sierra 2500 Denali
Vehicle information
Features




Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2020 GMC Sierra 2500 Base
Vehicle information
Features
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GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 2500 | $55,336 | |
2025 GMC Sierra 2500 | $46,588 | 6 Good deals |
2024 GMC Sierra 2500 | $46,995 | 28 Good deals |
2022 GMC Sierra 2500 | $38,995 | 10 Good deals |
2020 GMC Sierra 2500 | $18,455 | 9 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 $53,914, with pricing starting at $26,980.
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 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.