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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
Great experience.
Great experience. No hassle, Steve Ybarra answered all my questions and the process was easy and fast. Gave me more for my trade than I was offered at another dealership. One of the best truck buying experiences I’ve ever had.
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 AT4
Vehicle information
Features
Reviews
We recently bought a car here (again) at the Chevy
We recently bought a car here (again) at the Chevy dealership. Our sales rep Shawn was great and made it a pleasant experience - highly recommend. Not our first car from here and definitely not the last.
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
Absolutely the best!
Absolutely the best! Friendly staff. Great service. Will continue to go to Valley Buick and GMC for service of my vehicle and for future vehicle purchases
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
Professional, treated me the correct way to help me
Professional, treated me the correct way to help me purchase a price. Sales guy was super cool and down to earth
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
Had a great experience when taking my truck for service.
Had a great experience when taking my truck for service. Daisha was very helpful and very polite, helped me and answered my questions. Repair/service was super quick
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
GMC Certified
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.
GMC Certified
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
we had a good buying experience the team was very
we had a good buying experience the team was very knowledgeable and courteous. they made us feel at ease through the process of buying an new Buick
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Excellent customer service and support in getting me an
Excellent customer service and support in getting me an awesome deal was excellent by Ellis V. The finance department with Jeremiah F. was smooth speedy and helpful.
Used
2020 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
John Kerry keep it up got me in a truck when no one else
John Kerry keep it up got me in a truck when no one else would 😁 love my experience #luckybuyersclub
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Buying was stressful and vehicle was poorly detailed and
Buying was stressful and vehicle was poorly detailed and prepared. Was very hard to get extra set of keys.
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Sean and Jackson were awesome.
Sean and Jackson were awesome. Most honest and straightforward team that I have dealt with all my years leasing cars. In my case they went above and beyond expectations, even to the point of providing a greater discount than what was agreed upon because of an incentive issue. I would not hesitate to contact them if you are considering a new vehicle!
Used
2020 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Thanks guys!
Thanks guys! Lee and Bryan were very kind and helpful. Loving my car so far.
Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
my experience with Paul was great, we test drove the 2020
my experience with Paul was great, we test drove the 2020 Mazda CX9 very nice vehicle, it was a very nice ride & Paul was very informative.
Used
2020 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Thank you Joe…you made the whole transaction for my car
Thank you Joe…you made the whole transaction for my car comfortable and friendly. I was happy with the way you explained things clearly and broke down areas that were a little confusing and/or hard to comprehend. It was a pleasure meeting you. God bless you and your family. Again, thank you.😊
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Easiest car trade and buying experience ever!
Easiest car trade and buying experience ever! Received a very fair trade in value. Everything about the experience was pleasant. Would go back to this dealership if I’m in the market again!
Vehicle information
Features
Reviews
5 Stars – Outstanding Service from Derrick and the
5 Stars – Outstanding Service from Derrick and the Team Just bought a new truck from Skyline Ford in Keizer, and I couldn't be happier with the experience. Derrick and the entire team were outstanding—professional, helpful, and genuinely committed to making sure we were taken care of every step of the way. They treated us right, with no pressure and total transparency throughout the process. I’ll definitely be recommending Skyline Ford to anyone looking to buy a new truck. Thanks again, Derrick!
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Good work.
Good work. Took a little longer than we expected. We had expected to geta call telling us the day work would be completed, but we did not .
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great experience with the salesman Raymond Wright.
Great experience with the salesman Raymond Wright. I would definitely visit them again when looking for a truck.
Used
2020 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Hatchback shenanigans
Casey Toyota! Thank you for taking care of us at a moment’s notice. Our hatchback stopped working as we were unloading for our stay in Williamsburg. We drove straight to the dealership, took us rite in and fixed the problem. GREAT CUSTOMER SERVICE! I come from a Toyota nation of many years. Great job for taking pride in what you do, Toyota is very big on custom service and it was definitely shown today. THANK YOU!!!!
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Juwal, Travis and financing or seamless and didn’t harass
Juwal, Travis and financing or seamless and didn’t harass us to add add-ons because I told what my budget was upfront and when I needed the car to do and they found that car and they made it fit my budget and I’m talking about cash budget out the door cause I don’t do car payments They are lovely lovely people they’ve called to check on the car and me and my daughter because we need the car for the safety features because of our medical issues this dealership treats you as though you are family which is greatly appreciated in a really cruel world.
GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 | $84,776 | 3 Good deals |
| 2025 GMC Sierra 3500 | $74,212 | 77 Great deals |
| 2024 GMC Sierra 3500 | $69,407 | 85 Great deals |
| 2023 GMC Sierra 3500 | $59,623 | 69 Great deals |
| 2022 GMC Sierra 3500 | $56,619 | 94 Great deals |
| 2021 GMC Sierra 3500 | $53,506 | 36 Great deals |
| 2019 GMC Sierra 3500 | $45,626 | 12 Great deals |
| 2018 GMC Sierra 3500 | $45,175 | 9 Great deals |
| 2017 GMC Sierra 3500 | $40,697 | 8 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 $52,179, with pricing starting at $32,955.
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
14 Great Deals out of 123 listings starting at $37,995
-
GMC Sierra 3500 2020 AT4
5 Great Deals out of 26 listings starting at $38,998
2020 GMC Sierra 3500 by body style
2020 GMC Sierra 3500 by fuel type
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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.
