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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
2020 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.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Always get great service.
Always get great service. Staff is very friendly, helpful and knowledgeable. Would highly recommend the dealership to anyone.
Great Diesel truck when emission sensors work
Great vehicle for pulling my fifth wheel RV which weighs around 20,000 pounds. This dually truck pulls the RV very nicely without any significant strain on the engine or the transmission. However, like all of today's diesel engines there are 4 different system of emissions on this truck. Each one of these emission systems has sensors associated with them. If one of these sensors goes bad the truck will not perform optimally and sometimes it will go into the limp mode. Unfortunately this is not unique to GMC trucks. All manufacturers are battling this system. Also, I have had to take the truck to the dealer for computer upgrades in order to improve performance. I wish these upgrades could be performed on line (through wifi or with my own phone service). It sure would make things a lot simpler and improve the through put of the dealers who are already strained because of the limited number of available diesel mechanics.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
They were amazing and they went above and beyond to get
They were amazing and they went above and beyond to get me what I wanted in the car that I so wanted from car to mileage Nick and the team are the best.
Great car for work!!
Comfort, ease of driving, style, convenient for work and we LOVE the tailgate! Great for towing our heavy fifth wheel and our dogs are riding in style!!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Quality of used vehicle was what was advertised.
Quality of used vehicle was what was advertised. Salesman were friendly but one was a little pushy to close the deal. My payment is higher than I originally wanted. All in all I would buy there again.
Great luxury ride with great pulling capabilities.
The Texas Edition combined with the X31 package and premium SLT makes a very nice combination. The Sierra 3500HD gives you a luxury interior and ride with all the capabilities of a great pulling truck. The Duramax is quiet yet powerful. It is no doubt the best of trucks for 2020.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Went in to look came out a GMC truck owner,
Best experience looking and buying. Worked with me , were honest. Real professional team. Went in for a truck came out with more than I could've expected. Very happy , and got great deal! Thanks to Dorian Cerrato . Will be back.
Really impressed with the performance
Nicest truck I have ever owned preforms great with my RV Truck is comfortable and still works great when you need it to preform. Ride is nice and very roomy for all that want to travel with me






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I went in order to get a used electric car, and got a
I went in order to get a used electric car, and got a very nice one for a good price. They were willing to lower the price for me and remove several fees. Thank you, Steve!
Good power very comfortable ride
Good power plenty of room the truck has all kind of new technology in it that helps with driving safety and with job performance Awesome






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
The best
Very good service and very beautiful buying the vehicles






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great service even without an appointment
I didn't have an appt but they were awesome anyways. But nothing breaks on a schedule lol. I was helped quickly, offered coffee and a seat. They kept me updated on the car and how long it'd take for the parts. Thx guys, great job as usual.






Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great purchaing experience!
I bought a Jeep Wrangler for my son last week and as I drove it off the lot I discovered the radio didn't work. I thought, "Oh shoot, I just signed an 'As is - Where is, No Warranty'" document. I brought it back to Jamie, their used car manager, and he immediately smiled and said, "No problem." He had a brand new radio installed and didn't charge me a dime. Who does that?! Jamie does. When it comes time to hang up the spurs on my own Ford F-150 you can be sure I am heading back to Phil Long Ford. They are people of character and integrity.






Vehicle information
Features
Reviews
Best buying experience ever!
Thank you so much to Max, Chris, and Ian for an awesome buying experience. Max was super helpful and knowledgeable about the vehicle. Chris was super helpful and got us processed without delay. Ian was fantastic on the backend with help on warranty and additional services. We can recommend BMW of Bend without hesitation!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Love Fields Cadillac
I always get great service at Fields Cadillac!!! I have purchased 2 cars from them, excellent customer service!! I will continue with Fields for future purchases.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Sales was great.
Marcus in sales was outstanding. Very professional and did not rush the process and answered all questions me and my wife could think of. We leased 2 toyotas a tacoma and a corolla the only problem I have is I could not think of all the questions about leasing a vehicle like what happens at the end of lease when we want to lease 2 new toyota vehicles and you should be told about adding items to your vehicle when it is leased. My truck is the plain version no nav no heated seats no sensors. But after doing research I found you can't add anything not even a dash cam to your vehicle. Very dissatpointed in that aspect.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Worked with JT and Max for the purchase of a 2020 GMC
Worked with JT and Max for the purchase of a 2020 GMC Acadia. We went in with a set monthly payment idea and they worked with us until we got to where we wanted to be. 10/10 customer service experience! Even if things wouldn’t have worked in our favor, we would have left knowing they did everything they could and actually care for their customers! Highly recommend!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Manuel took care of us and gave us great customer service
Manuel took care of us and gave us great customer service to make our purchase experience enjoyable






GMC Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I am so impressed and appreciative of the service team
I am so impressed and appreciative of the service team here. Yes, it can take a long time to get an appointment - depending on what you need done, but the last two times I've brought my truck in for service, they fixed things the other auto shop repaired incorrectly, helped get me to and from the car rental place, and had exceptional communication before, during and after. Their staff is friendly and professional and I trust the work that's done, is done correctly.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Amazing
I have had many cars and been to many dealerships for services, but this is easily the most pleasant and positive experience I have ever had getting my car serviced. I would recommend your dealership to anyone and everyone.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
We were very happy with the service we received from our
We were very happy with the service we received from our sales rep Isaac Ndalo, He was professional and attentive, He listened to what we needed and provided relevant information and options. The process was very transparent, Isaac was very patient and well informed giving detailed information on the type of car we wanted to purchase. The overall experience was great and we would recommend Isaac to anyone looking to purchase a vehicle. We left the GMC Reno lot feeling satisfied and confident in our purchase. Thank you Isaac & GMC for your great customer service.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
It was a very pleasant experience.
It was a very pleasant experience. Lee Hobson and Dia Millan were very helpful through out our purchase. Answered all questions we had. Would recommend to my friends .






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
AWESOME Team!
AWESOME Team!! Service to Sales. On our trip to Mt Baker with the entire family loaded for a full day on the mountain, our 2021 GMC Yukon XL AT4 broke down on i5. Blade Chevrolet was the closest dealership to us. We snagged an Enterprise rental from down the street and left our GMC at Blade Chevy for repairs, this would be our first experience here, and will not be our last. As a former Service Director in Retail I was had the pleasure of working with Jason, Certified Service Advisor. Jason and his team of advisors and technicans were knowledgable, polished, guest focused, while ensuring the highest level of care was provided. We had our truck back in our hands by. Thursday that week, Blade Chevy has earned my Loyalty! Thank you Jason, and the entire Service Dept!
GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 3500 Denali | $71,301 | 8 Great deals |
2024 GMC Sierra 3500 Denali | $57,981 | 12 Great deals |
2023 GMC Sierra 3500 Denali | $48,999 | 6 Great deals |
2022 GMC Sierra 3500 Denali | $48,996 | 11 Great deals |
2021 GMC Sierra 3500 Denali | $45,266 | 5 Great deals |
2019 GMC Sierra 3500 Denali | $29,900 | 30 Good deals |
2018 GMC Sierra 3500 Denali | $33,900 | 24 Good deals |
2017 GMC Sierra 3500 Denali | $31,441 | 6 Good deals |
2016 GMC Sierra 3500 Denali | $23,945 | 12 Good deals |
About the 2020 GMC Sierra 3500 Denali
Base shown (base trim).
- Seating
- 2
- 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 2020 GMC Sierra 3500 Denali cost?
The 2020 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 3500 Denali is $57,473, with pricing starting at $39,990.
What are some similar vehicles and competitors of the 2020 GMC Sierra 3500 Denali?
The 2020 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:
Is the 2020 GMC Sierra 3500 Denali reliable?
The 2020 GMC Sierra 3500 has an average reliability rating of 4.9 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 3500 owners.
Is the 2020 GMC Sierra 3500 Denali a good truck?
Below are the Cars.com consumer ratings for the 2020 GMC Sierra 3500.
- Comfort 4.9
- Interior 4.9
- Performance 4.9
- Value 4.7
- Exterior 5.0
- Reliability 4.9
100% of drivers recommend this car
- Comfort 4.9
- Interior 4.9
- Performance 4.9
- Value 4.7
- Exterior 5.0
- Reliability 4.9
*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 2020 Denali
9 Great Deals out of 100 listings starting at $39,990
-
GMC Sierra 3500 2020 Base
7 Great Deals out of 31 listings starting at $28,129
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