Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
2021 GMC Sierra 2500 SLE 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.
Certified
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.
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
Hat ' s up to Davis and Ariel
In Today's seller market, the Davis staff did everything in their power to make our purchase of an Equinox as easy as possible as well as affordable as possible. I like the no pushy sale. They explained and let you decide. It helps to have salesmen who are experts in cars. and they do have those. I would pay them a visit for my next purchase, even if just to ask about a brand they dont carry. You will not regret it.
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
Excellent service and I did not even walk away with a
Excellent service and I did not even walk away with a car. I would shop again there in the future.
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 SLE
Vehicle information
Features
Reviews
Steve Torelli was great and professional the service was
Steve Torelli was great and professional the service was excellent, everyone was friendly ,thank you
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 SLE
Vehicle information
Features
Reviews
Great service
I found the best price on a Chevy Bolt with low miles. While the car wasn’t perfect, it was in good condition. The staff was friendly and attentive. Tony assisted us and made himself available by email and text, was very responsive and accommodating. No, they do not allow. Negotiation on their used car prices, but it wasn’t needed. The other reviews harping on that fact shoe the arrogance and entitlement some consumers have despite Their prices being more than fair. If a good product at a great price is delivered, why would you insult someone with a lower price? Have some respect. Only complaint was the cheap tires they put on the car. Horrible. But I expected a corner or two to be cut for the price I paid and for home delivery.
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 SLE
Vehicle information
Features
Reviews
Everyone was great from start to finish.
Everyone was great from start to finish. I think they identified the problem that other dealership I no longer go to couldn't. As of now no problems with my car
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Awesome service/repair department
My Suburban broke down, they were efficient and helpful in getting my vehicle repaired. Allan was great and I would definitely recommend this dealership to others.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Vehicle information
Features
Reviews
Brandon was great through the whole process.
Brandon was great through the whole process. Hassle free and great customer service. thanks Brandon!!
Vehicle information
Features
Reviews
We purchased a car from BM Motors.
We purchased a car from BM Motors. We had a great experience with Mikey. Highly recommend them
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
I have been doing business with Red's Auto for a long
I have been doing business with Red's Auto for a long time. They have the best team you can ask for. If you are looking for a vehicle I would highly recommend them!!
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Good Car Dealer
Great Family Dealership. Customer care is outstanding. Buy with confidence. Salesman took his time to review our vehicle with us and answered all of our questions.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
They were an honest and knowledgeable.
They were an honest and knowledgeable. They were friendly and professional. Easy to communicate with.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Working with Jesse and Mason was such a pleasure.
Working with Jesse and Mason was such a pleasure. They are the absolute best to work with and you can tell they always but the customer first!
Vehicle information
Features
Reviews
I did not end up purchasing a car with this dealership
I did not end up purchasing a car with this dealership however I did not because of the honesty of the dealership. The dealer fully disclosed prior damage the vehicle had and the repairs. It was my decision to not purchase because of the damage.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
They made buying a new truck too easy.
They made buying a new truck too easy. Good job Pat Richardson. I just got back from Florida he had everything ready to start the buying process.
Used
2021 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
This is one of the best dealerships my wife and I have
This is one of the best dealerships my wife and I have purchased and had serviced done on our vehicles. All of the staff from sales to service are Great.
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 SLE
Vehicle information
Features
Reviews
We have been treated very well at Bleskin now for yrs.
We have been treated very well at Bleskin now for yrs. Always get great service and have gone far beyond anyone else we've used in the past. We'll always be a customer.
-
Prev - 1
- 2
-
Next
GMC Sierra 2500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 2500 SLE | 4 Good deals | |
| 2025 GMC Sierra 2500 SLE | $58,794 | 16 Great deals |
| 2024 GMC Sierra 2500 SLE | $51,966 | 14 Great deals |
| 2023 GMC Sierra 2500 SLE | $47,290 | 14 Great deals |
| 2022 GMC Sierra 2500 SLE | $42,322 | 14 Great deals |
| 2020 GMC Sierra 2500 SLE | $37,005 | 17 Good deals |
| 2017 GMC Sierra 2500 SLE | $30,126 | 17 Good deals |
About the 2021 GMC Sierra 2500 SLE
SLE shown.
- 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 SLE cost?
The 2021 GMC Sierra 2500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 2500 SLE is $42,100, with pricing starting at $33,745.
What are some similar vehicles and competitors of the 2021 GMC Sierra 2500 SLE?
The 2021 GMC Sierra 2500 SLE compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 2500 SLE 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.
75% of drivers recommend this car
- Comfort
- 4.7
- Interior
- 4.6
- Performance
- 4.3
- Value
- 3.9
- Exterior
- 4.6
- Reliability
- 4.0
SLE (10 styles)
| Style | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2WD Crew Cab 172" SLE | 4WD Crew Cab 159" SLE | 2WD Crew Cab 159" SLE | 4WD Crew Cab 172" SLE | 4WD Reg Cab 142" SLE | 2WD Reg Cab 142" SLE | 2WD Double Cab 162" SLE | 2WD Double Cab 149" SLE | 4WD Double Cab 149" SLE | 4WD Double Cab 162" SLE |
| Inventory price | |||||||||
| Starting at $45,600 | Starting at $48,200 | Starting at $45,400 | Starting at $48,400 | Starting at $44,400 | Starting at $41,600 | Starting at $43,800 | Starting at $43,600 | Starting at $46,400 | Starting at $46,600 |
| 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) |
*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.
GMC Sierra 2500 trims
-
GMC Sierra 2500 2021 Denali
11 Great Deals out of 171 listings starting at $41,950
-
GMC Sierra 2500 2021 AT4
4 Great Deals out of 90 listings starting at $31,500
-
GMC Sierra 2500 2021 Base
6 Great Deals out of 35 listings starting at $22,995
-
GMC Sierra 2500 2021 SLT
4 Great Deals out of 29 listings starting at $32,900
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
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.