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Used
2021 GMC Sierra 3500 Denali 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.
GMC Certified
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I Had an amazing time thanks to george, everything went
I Had an amazing time thanks to george, everything went smoothly. I Love my vehicle. 😊
Truck is a Solid vehicle overall.
Has a really Big feel to it. I currently use mine to pull gooseneck trailer. I haven't had a load yet that I couldn't pull. The downsides to this truck is to me I feel it could get better fuel mileage. Also I had trouble with #4 injector...dealership replaced it. Now my AC doesn't work all the time. Although it sounds like it's blowing it isn't.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Joe Andrade, worked to get me a deal that fit my budget,
Joe Andrade, worked to get me a deal that fit my budget, keeping me in the Crosstrek, I have been a Subaru customer since 2014 back NYC, Joe and the staff at your dealership always me feel welcome, thank you.
Love it.
I love the new features this truck offers. I would highly recommend this truck if your looking for a Diesel. I provides all the features and benefits you would want.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I met with Dave Fisher, he made me feel very comfortable
I met with Dave Fisher, he made me feel very comfortable from the beginning all the way through the whole process of buying a used vehicle. No pressure, no stress. I was very happy I decided to go to Sapaugh GM Country. Thanks Dave for making the process and easy one
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Easy experience.
Easy experience. Truck was clean, salesperson was very knowledgeable and friendly. There was very little pressure. The process of signing papers was efficient. I would buy here again.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I just want to say that I had a very professional
I just want to say that I had a very professional customer service experience with Ryan Ramdass and wanted to write a review to express my gratitude. Ryan and I had an issue that we had to address and resolve over the phone and he handled it very professional and cautiously. I would recommend Ryan to anyone who is searching for their next Chevrolet! He is a top notch salesman in my book. I his straight forward and to the point and says it like it is and I appreciate that about him and our conversation. Ask for Ryan when you look to purchase your next car he will not let you down. Aaron...
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very good, no pressure.
Very good, no pressure. Very good salesman Experience was very good. I would advise people in my life if they need a new car go to Tim Lally Chevrolet in Cleveland, Ohio.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Nathan the salesman was great to work with.
Nathan the salesman was great to work with. Finance through them was fast and easy. Great customer service. Would highly recommend them if you're looking for new or used vehicle
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Keri is OUTSTANDING.
Keri is OUTSTANDING. Listens to my requests, provides me with options, and then enacts my decisions. Does not change the plan without getting my approval first.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
This was the easiest and best car buying experience i
This was the easiest and best car buying experience i have ever had. Tanner was attentive to our needs and made everything as easy as possible.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Excellent!
Excellent! Wonderful Sales Associate! Smooth process! Fourth (if not fifth) car purchased from Crain Buick & GMC? each time having Tony With The Keys as our Sales Associate! HE IS THE VERY BEST!!!
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Stopped in just for advice, no intention to buy.
Stopped in just for advice, no intention to buy. Manager Melissa gave me a full tour, compared models side by side, no pressure. The next day they even emailed me a list of options within my budget. That’s real follow-up.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great to work with!
Great to work with! Very professional I could not have asked for for a better outcome
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Doug was very helpful with my new car I just love it, He
Doug was very helpful with my new car I just love it, He took good care of me.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Riley called to address a negative review and he was
Riley called to address a negative review and he was helpful and got me in for the repair quickly, he even split the cost to make right what went wrong with the previous visit.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I had a great experience buying my Tacoma from
I had a great experience buying my Tacoma from Immaculate. Thanks for your help Zach
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
We have bought vehicles from mike Atchison through the
We have bought vehicles from mike Atchison through the years they were nice vechiles come and see Mike Atchison
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very professional nice to work with.
Very professional nice to work with.And prompt service. Will continue to describe them in the future.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I went in looking at used cars and ended up buying a
I went in looking at used cars and ended up buying a brand new Equinox from Brady. He was so patient and helpful. He was professional and courteous, just an overall exceptional young man. I would highly recommend him if you are looking for a new vehicle.
GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 Denali | ||
| 2025 GMC Sierra 3500 Denali | 27 Great deals | |
| 2024 GMC Sierra 3500 Denali | $74,894 | 29 Great deals |
| 2023 GMC Sierra 3500 Denali | $63,966 | 20 Great deals |
| 2022 GMC Sierra 3500 Denali | $62,104 | 21 Great deals |
| 2020 GMC Sierra 3500 Denali | $56,513 | 10 Great deals |
| 2019 GMC Sierra 3500 Denali | $48,839 | 22 Good deals |
| 2018 GMC Sierra 3500 Denali | $51,373 | 23 Good deals |
| 2017 GMC Sierra 3500 Denali | $45,069 | 15 Good deals |
About the 2021 GMC Sierra 3500 Denali
Denali shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four 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 3500 Denali cost?
The 2021 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 3500 Denali is $58,750, with pricing starting at $44,919.
What are some similar vehicles and competitors of the 2021 GMC Sierra 3500 Denali?
The 2021 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 3500 Denali reliable?
The 2021 GMC Sierra 3500 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 3500 owners.
100% of drivers recommend this car
- Comfort 4.5
- Interior 4.5
- Performance 5.0
- Value 4.0
- Exterior 4.5
- Reliability 4.0
Denali (2 styles)
| Style | |
|---|---|
| 4WD Crew Cab 159" Denali | 4WD Crew Cab 172" Denali |
| Inventory price | |
| Starting at $66,700 | Starting at $66,900 |
| 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) |
*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 3500 trims
-
GMC Sierra 3500 2021 Base
8 Great Deals out of 34 listings starting at $13,795
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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.
