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
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.






Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very nice dealership
Josh Nussbaum was my sales person very nice and pleasant after I found the truck I wanted he made sure everything was easy and simple for me. He also made sure Fordpass was all set up and ready before I left.
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
Treated like family. Done right the first time.
The service this dealership stands behind is the best of the best. We were treated like family and received top notch service that went above and beyond our expectations. Buying a car is one thing, but having a dealership treat you so well AFTER the sale for the life of the car is what matters most. I trust Jason and Gainesville Buick, and you should too if you want things done right the FIRST time.
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
Professiona service advisor and quick service.
Professiona service advisor and quick service. I got in and out on a Saturday in under 90 minutes. Easy to a service appointment online with Toyota of Greenville. Steve Barton is a great advisor
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
Best dealship ever!
Best dealship ever! I highly recommend whether you have questions, are in the market to buy, or have you vehicle serviced. Stop by and see for yourself.
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
We are so grateful with our agent Mr.
We are so grateful with our agent Mr. Adam for he was so very helpful, patience and serve us with respect during our transaction at GMC. For this reason, we even recommended GMC Roseville to our friends, colleagues and family who are looking to either buy or trade in their auto because of superb customer service that we had received here. 1M thumbs up and star to Mr Adam and to all crew of GMC Roseville!
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
I was in the market for an Acura MDX and found one
I was in the market for an Acura MDX and found one (certified) on Beaver Chevrolet website for a very competitive price. I called and got Rich King in sales and am so thankful that he picked up the call. He was personable, professional, informed, and a straight shooter!! I told him the vehicle I was interested in and the specifics (money down, monthly payment etc) I needed to make it work. He went over the car fax w me and I put a deposit on it to hold as sold. I live 2.5 hours away and explained I would be disappointed if I drove all that way based on inaccurate information. I got there and he had the vehicle detailed and ready for my test drive…and everything was exactly as he said. Goto Beaver Chevrolet and ask for Rich King!! You won’t be disappointed. 😎






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great
Always good service here. They always treat me with courtesy and respect.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Had a great time with Peter and definitely was easy.
Had a great time with Peter and definitely was easy. Will be back for another one






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
We were so very fortunate to happen along to Alan King.
We were so very fortunate to happen along to Alan King...and he was great to work with. Would recommend him to anyone we know (or don't know!) to help with finding the car or truck of your dreams!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Purchase of a certified Buick Regal
I live far from this dealership but they had exactly what I was looking for. The whole experience was very favorable . Everyone I has contact with was very professional and courteous. The salesman I worked with Joe Kendall was excellent. The day after the purchase I noticed that a light strip was missing on one of the outside mirrors. The service dept fixed it. In my opinion they are a top notch GM dealership . Keep up the good work😀






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Took my 2023 Silverado in for a recall to Service
Took my 2023 Silverado in for a recall to Service department and they were able to get me in and out sales department very accommodating working with you






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great car buying experience Tj,Scott and Chad were
Great car buying experience Tj,Scott and Chad were awesome thank you all for everything






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very good customer service.
Very good customer service. Prompt and courteous to contact me back after inquiring about a truck!! Very good experience!! Cade my salesman was very informative and knows his inventory well. Thanks again!






Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
A+ Service from the car salesman
The experience with the car salesman, Julio, was amazing. Julio took care of me and dedicated his time to helping me get the truck I wanted. I appreciate everything Julio did for me, and I recommend that other people speak with him about buying from the dealer. I also do not find it fair that car salesmen are judged entirely for other departments' mistakes, especially those that car salesmen have no control over. I would not judge a waiter for bad food; therefore, a scorecard should not judge a car salesman for finance mistakes. As a learned lesson, include your salesmen in your deal and go over the paperwork after you are done with these other areas they take you on the dealer. Their report card from the survey directly impacts the salesmen, and even if you get a bad experience in finance, they will blame it on the salesmen. Thanks for your help, Julio!




Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Service oil change and new tires.
Good experience They help with my tire problem that the other tire shops in town could not seems not able to fix even though I took it back to them several times.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Service experience
Joe my service adviser is very helpful , courteous & knowledgeable. He took care of my car issues in a timely manner. The breakfast bar was delicious.






Used
2020 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
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
They went above and beyond to get me the vehicle I wanted
They went above and beyond to get me the vehicle I wanted I will do business with them again thank you Chase!!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
So happy with our Honda Pilot purchase
After many days of searching for a vehicle, we finally found a quality SUV at a fair price at Sunset Auto Wholesale in Tacoma. I definitely would recommend this dealership. Tryston helped us through the process and made it stress-free. From start to finish, the staff was great.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Austen is knowledgeable, efficient and friendly.
Austen is knowledgeable, efficient and friendly. I love that the tech sends you a video of your vehicle and what he?s working on. And the best of all is that they got me out in a timely manner
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 | $59,972 | 14 Great deals |
2023 GMC Sierra 3500 Denali | $48,999 | 15 Great deals |
2022 GMC Sierra 3500 Denali | $49,990 | 11 Great deals |
2021 GMC Sierra 3500 Denali | $42,888 | 5 Great deals |
2019 GMC Sierra 3500 Denali | $29,900 | 28 Good deals |
2018 GMC Sierra 3500 Denali | $33,900 | 23 Good deals |
2017 GMC Sierra 3500 Denali | $31,441 | 7 Good deals |
2016 GMC Sierra 3500 Denali | $23,945 | 13 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 $57,282, 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 Base
5 Great Deals out of 29 listings starting at $35,999
- ${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}
Certified cars are manufacturer warrantied and typically go through a rigorous multi-point inspection.
This car is likely to sell soon based on the price, features, and condition.
${award_blurb}
${award_two_blurb}