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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
Response to my inquiry was prompt and courteous.
Response to my inquiry was prompt and courteous. So was the follow-up as the sales agent checked with me regularly. The initial internet presentation of the car wasn't great as pictures were of "other" cars of the wrong color, etc. I didn't buy the car so I don't know what happened after a few days.
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.






GMC Certified
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Great communication, quick work, thorough and Corey was
Great communication, quick work, thorough and Corey was very patient with all of my questions!
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
Marco is super good and he handled my need properly.
Marco is super good and he handled my need properly. He is quite soft spoken and understand the need before jumping the showing the cars. As per the selling price point, you guys are best in DFW area.
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
Responded quickly and was willing to work with me on the
Responded quickly and was willing to work with me on the selection of a vehicle. Due to the distance from the dealership I did not find a suitable vehicle for which I was willing to make the trip.
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
The service advisor is professional, competent, and
The service advisor is professional, competent, and personable. Oil change and tire rotation was completed in a timely manner. Very satisfied with this service. Cost is in line with competitors.
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
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
I want to thank Troy and Dorela for helping me with the
I want to thank Troy and Dorela for helping me with the process. They are very professional and knowledgeable. It made the whole process easier.






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Chris was the best to deal with; quick and to the point
Chris was the best to deal with; quick and to the point would definitely buy another vehicle from him. Young boy but knows his profession.






Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
The dealership provided excellent service.
The dealership provided excellent service. The dealership provided excellent service. The dealership provided excellent service. The dealership provided excellent service. The dealership provided excellent service. Excellent service indeed!






Certified
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Excellent customer service
I brought my Ford Fiesta in for service. Kayla in the service center was very professional, knowledgeable and kept me informed. I thought the service was expensive....but that is not on the Ford Dealership...that is the way parts are these days. I was a little angry because I had to bring the car back for service within 3 days, but was very happy at the treatment received from Kayla and the dealership. All is now fixed and I received what I always get from them, customer service that is professional and friendly. Thank you!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Always exceed expectations Holm is alway working to give
Always exceed expectations Holm is alway working to give best service and go above and beyond what is needed . Jamie the service tech is excellent and catches the little things If you want to buy a car where you know the follow up will be there. Holm is the place






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Reason Why you should shop at Carmax
My experience at this dealership wasn’t too bad, if you have patience for the people there An the staff you should be good. I got there at 1:30pm an since I didn’t schedule I had to wait but it was only for like 15mins or so till I saw a sale rep. 1:50pm they called me to talk to a sales rep, got my 13 Honda Civic appraised, waited 25mins for them to approved it, then went to the lot picked out my car I wanted. 20mins went back we talked numbers An gave them my down payment An was out in like 45mins after signing an them washing n vacuuming your car, you have the keys An you out the door!! I definitely recommend Marlo if you ever go to this car max. It goes by pretty quick in my opinion, don’t let this other reviews discourage you.






Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Our experience with purchases and service with New Way
Our experience with purchases and service with New Way Coon Rapids has been exceptional. Two pick ups and two Explorers later we are completely satisfied. Our last vehicle purchase was recent. The sales person was Rick Spoelstra; we had the most pleasant experience. Rick has so much vehicle knowledge --- we gained information and a friend in the process. I must also speak highly of service and support staff. Always efficient and accommodating.






GMC Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Best Experience I’ve had with a Dealership
I highly recommend this dealership. After many frustrating visits and experiences with other car dealerships, I went into this dealership expecting more of the same games. However, after talking with salesperson Randy Cobb, my concerns quickly went away. He was a straight shooter and a pleasure to deal with. I wish more car dealerships had salespeople and practices like this. He was transparent about the condition of the vehicle. He didn’t treat negotiations like a game. He treated us with respect. He seemed like he genuinely cared about helping us. He didn’t pressure us. He went the extra mile every step of the way. Thanks again!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Outstanding sales person and dealership!
We could have not ask for a better sales person than Audrey!! She was so helpful, knowledgeable and NOT pushy in any way. She made buying my husband truck an ease!! We will for sure be back to work with her on our next car purchase!! The dealership it self was a wonderful dealership, best dealership we have ever use!






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!






Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I bring my Buick Envision to this dealership continually
I bring my Buick Envision to this dealership continually because I feel very confident that they are honest about what service my automobile needs ...AND that those working on my automobile are trained properly and strive to do an excellent job.






Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Our salesperson, Mitch, did an outstanding job finding
Our salesperson, Mitch, did an outstanding job finding the car we were looking for and setting us up with our new car. Mitch was happy to answer any questions or concerns we had about our purchase.






Used
2020 GMC Sierra 3500 SLE
Vehicle information
Features






Used
2020 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Frank was friendly and helpful.
Frank was friendly and helpful. He look up my records to make sure I was not receiving and paying for unnecessary service. He provided a coupon.
GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 3500 | $55,460 | |
2025 GMC Sierra 3500 | $45,440 | 29 Great deals |
2024 GMC Sierra 3500 | $38,488 | 33 Great deals |
2023 GMC Sierra 3500 | $39,000 | 26 Great deals |
2022 GMC Sierra 3500 | $29,499 | 19 Great deals |
2021 GMC Sierra 3500 | $13,795 | 11 Great deals |
2019 GMC Sierra 3500 | $21,985 | 7 Great deals |
2018 GMC Sierra 3500 | $18,995 | 9 Great deals |
2017 GMC Sierra 3500 | $25,999 | 12 Good 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 $55,104, with pricing starting at $27,988.
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.
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Research the 2020 GMC Sierra 3500
Compare the 2020 GMC Sierra 3500
GMC Sierra 3500 trims
-
GMC Sierra 3500 2020 Denali
15 Great Deals out of 94 listings starting at $38,786
-
GMC Sierra 3500 2020 Base
3 Great Deals out of 21 listings starting at $34,499
2020 GMC Sierra 3500 by body style
2020 GMC Sierra 3500 by fuel type
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