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 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
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 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
We had a fantastic experience, Everyone was very nice We
We had a fantastic experience, Everyone was very nice We purchased a new outlander and just love it Ray and the entire team were great Highly recommend!
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 Base
Vehicle information
Features
Reviews
Thanks so much Michael get this transaction run smoothly
Thanks so much Michael get this transaction run smoothly as possible, delivered my 300k car to California in 3 days. Definitely will buy from this dealer again! Great price great service!
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
I travel 2 hours I just bought my 3rd car.
I travel 2 hours I just bought my 3rd car. Always leave happy. I enjoy the place and people
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






GMC Certified
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Transaction was great and employees were very patient and
Transaction was great and employees were very patient and professional! Thank you so very much!
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 Base
Vehicle information
Features
Reviews
In my pursuit of a new truck I was taken care of.
In my pursuit of a new truck I was taken care of. Any question I had was answered, all the employees I talked to were friendly and helpful, and my main contact - Esbeyde - was excellent. Because of their consistency in taking care of me and my needs, Ray Chevrolet is my go to for any service or when I am ready for a new vehicle.






Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
In search of a low mileage, newer vehicle to replace our
In search of a low mileage, newer vehicle to replace our 8 year old pickup with a well-equipped replacement, we found an ultra-low mileage, full-featured high-efficiency pickup at Imperial. Firas Ektilah was friendly, professional and well-informed to answer our questions and provide a test drive and all of the vehicle information I needed to determine the vehicle and options are an exceptional value and We negotiated a vehicle price that was highly competitive and provided top value for our trade, which was previously purchased from Firas. We then completed the purchase and sale with Ohmar, who took the time to review the extended warrantee on our trade and provided as much of an extended warrantee on our purchase that was in our budget. The vehicle was then professionally cleaned inside-out and filled with fuel. This proved to be the easiest, most valued vehicle purchase experience we've ever experienced! We look forward to returning to Imperial Chevrolet to have the vehicle serviced, as they have provided exceptional service to all of our vehicles, including one we didn't originally purchase there. We've also been impressed with the competitive service rates and timely discounts Imperial Chevrolet has provided when service is due on any one of our vehicles. When it comes time to replace a vehicle, Imperial is the first and likely last stop we'll make!






Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
The service met what i needed.
The service met what i needed. I was able to ensure that the price of the repairs that were needed were affordable and correct. I just wish some of the future repairs that are needed are more affordable and could be more explained by the customer service representative like the previous rep that I had at the previous visit. Overall, the facility was very clean and i was able to meet with one of the car/service representative. I was able to meet with a car dealer who was very friendly and ensure that I had his contact information, in the event I plan or may want to purchase a new vehicle in the near future, which i plan too.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Excellent service, even after the sale
I bought an LX 570 from out of state, and I had an excellent experience. Vinny was my salesman, and he was very helpful throughout the process. After the sale, they noticed a dent on the hood when the vehicle was getting loaded up to ship to me. They contacted me to apologize that they had not noticed it before, and they told me to get it fixed and it would be on them! I had not even asked about dents! When I got the LX it was beautiful. However, I noticed that the owner's manual was missing. When I contacted Vinny, he said they would get one shipped out to me. In short, excellent service, even after the sale. I would definitely buy from them again.






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.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Salesman was very understanding and showed us the actual
Salesman was very understanding and showed us the actual car that we had come to see. Was not pushy, which was greatly appreciated.






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 Base
Vehicle information
Features
Reviews
Natalia was very helpful and professional in helping me
Natalia was very helpful and professional in helping me get the dream truck i always wanted






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great.place!
Kristen in the service department was very thorough, friendly, great personality. I spoke to "Gator" from service several times and he was always helpful, patient and courteous. Great place!






Used
2020 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
My experience at Gateway Chevrolet was great from start
My experience at Gateway Chevrolet was great from start to finish. The staff was friendly, knowledgeable, and made the entire process smooth and stress-free. I?m thrilled with my new 2025 Silverado Trail Boss?thank you for the excellent service!






Used
2020 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
All of the salesmen are setting within arm length of each
All of the salesmen are setting within arm length of each other and you can hear everyone elses business. Our main reason for shopping at Carters was the selection of Suburbans






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
My wife and I came in to look at two vehicles.
My wife and I came in to look at two vehicles. We were surprised that the General Manager was the one to greet us while I was looking under the first vehicle. Steve was very polite and introduced himself and asked what they could do to help. We had a short conversation and then he grabbed a sales associate, Nick, and both were very accommodating and patient with our inquiries about the used vehicles. They provided hard copies of everything from the Carfax to their own vehicle inspection report for us to review. They were also accommodating while we left to discuss and then came back to have an offsite third-party pre-purchase inspection done on one of the vehicles. We came back with no real issues and closed the sale. We were even the last ones out the door a few minutes after hours. Both Steve and Nick were both there to see us off in our new, to us at least, vehicle. Would defiantly not hesitate to look at Walser again as the service earned my repeat business.






Used
2020 GMC Sierra 3500 SLE
Vehicle information
Features
Reviews
Everyone was very friendly and kind.
Everyone was very friendly and kind. Always keep in the loop of what was going on. Was not to long process to complete the whole process.






GMC Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great experience and service from sales.
Great experience and service from sales. I?m a repeat buyer from this dealership. Always a god experience with this sales group. Purchased and new truck. Thank you.






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😀
GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 3500 | $43,410 | 11 Great deals |
2024 GMC Sierra 3500 | $40,018 | 18 Great deals |
2023 GMC Sierra 3500 | $43,995 | 22 Great deals |
2022 GMC Sierra 3500 | $29,877 | 34 Great deals |
2021 GMC Sierra 3500 | $13,795 | 17 Great deals |
2019 GMC Sierra 3500 | $18,988 | 8 Great deals |
2018 GMC Sierra 3500 | $19,800 | 6 Great deals |
2017 GMC Sierra 3500 | $26,500 | 8 Great deals |
2016 GMC Sierra 3500 | $14,900 | 10 Great deals |
About the 2020 GMC Sierra 3500
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 cost?
The 2020 GMC Sierra 3500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 3500 is $54,702, with pricing starting at $32,995.
What are some similar vehicles and competitors of the 2020 GMC Sierra 3500?
The 2020 GMC Sierra 3500 compares to and/or competes against the following vehicles:
Is the 2020 GMC Sierra 3500 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 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
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 159" AT4 | 4WD Crew Cab 172" AT4 |
Inventory price | |
Starting at $59,500 | Starting at $59,700 |
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 (8 styles)
Style | |||||||
---|---|---|---|---|---|---|---|
2WD Reg Cab 142" | 4WD Reg Cab 142" | 2WD Double Cab 162" | 4WD Double Cab 162" | 4WD Crew Cab 159" | 2WD Crew Cab 172" | 2WD Crew Cab 159" | 4WD Crew Cab 172" |
Inventory price | |||||||
Starting at $37,000 | Starting at $39,800 | Starting at $39,800 | Starting at $42,600 | Starting at $44,200 | Starting at $41,600 | Starting at $41,400 | Starting at $44,400 |
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) |
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 (8 styles)
Style | |||||||
---|---|---|---|---|---|---|---|
4WD Crew Cab 172" SLE | 2WD Crew Cab 172" SLE | 4WD Crew Cab 159" SLE | 2WD Crew Cab 159" SLE | 4WD Reg Cab 142" SLE | 2WD Reg Cab 142" SLE | 4WD Double Cab 162" SLE | 2WD Double Cab 162" SLE |
Inventory price | |||||||
Starting at $48,400 | Starting at $45,600 | Starting at $48,200 | Starting at $45,400 | Starting at $44,400 | Starting at $41,600 | Starting at $46,600 | Starting at $43,800 |
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) |
SLT (4 styles)
Style | |||
---|---|---|---|
2WD Crew Cab 172" SLT | 4WD Crew Cab 172" SLT | 4WD Crew Cab 159" SLT | 2WD Crew Cab 159" SLT |
Inventory price | |||
Starting at $54,200 | Starting at $57,000 | Starting at $56,800 | Starting at $54,000 |
Combined MPG | |||
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) |
*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.
Similar Cars
-
Chevrolet Silverado 2500 for sale
111 Great Deals out of 480 listings starting at $12,795
-
Chevrolet Silverado 3500 for sale
26 Great Deals out of 178 listings starting at $22,988
-
Ford F-350 for sale
36 Great Deals out of 284 listings starting at $10,950
-
Ford F-450 for sale
8 Great Deals out of 54 listings starting at $23,984
-
GMC Sierra 2500 for sale
36 Great Deals out of 322 listings starting at $26,281
-
RAM 3500 for sale
17 Great Deals out of 160 listings starting at $19,367
Research the 2020 GMC Sierra 3500
Compare the 2020 GMC Sierra 3500
GMC Sierra 3500 trims
-
GMC Sierra 3500 2020 Denali
13 Great Deals out of 106 listings starting at $32,995
-
GMC Sierra 3500 2020 Base
2 Great Deals out of 26 listings starting at $39,954
Used 2020 GMC Sierra 3500 by body style
2020 GMC Sierra 3500 by fuel type
- ${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}