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 2500 trucks
for sale
near
Justin, TX
- 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 2500 Denali
Vehicle information
Features
Reviews
My buying experience was seamless!
My buying experience was seamless! My salesperson Dylan did an exceptional job of facilitating my purchase experience!
2020 GMC 2500 AT4
This truck is the truck that all others should look up to. It rides great, will tow a house, runs smooth, and gets great fuel economy. The Allison transmission is so smooth. The AT4 looks great too.






Used
2020 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
I went in and looked at truck drove the truck and came
I went in and looked at truck drove the truck and came back after they got me financed, and it ended up taking the truck home. Great experience. I recommend them to anyone. They're looking for a nice truck.
Best truck I've owned yet
What a gorgeous truck, runs good, sounds good and has all of the amenities I need although I am looking forward to their next interior upgrade.






Used
2020 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
I had an outstanding experience purchasing my 2020
I had an outstanding experience purchasing my 2020 Mercedes GLC 300 at AutoNation Ford South Fort Worth! From start to finish, the process was smooth, transparent, and stress-free. A big shoutout to Tyler Morgan, who was incredibly helpful, knowledgeable, and genuinely made me feel like a valued customer. He answered all my questions with patience and professionalism, and never made me feel pressured at any point. The vehicle was exactly as described — clean, well-maintained, and priced fairly. I couldn’t be happier with my purchase or the level of service I received. Highly recommend Tyler and the team at AutoNation Ford South Fort Worth if you're looking for a quality car-buying experience!
Most convenient options on any vehicle I've owned.
Great power and yet great economy. Love the safety features with the cameras and side vehicle warning. Camera that shows side of vehicle, including trailer when turn signal is on is great. Also appreciate the bed camera for hooking up gooseneck trailer.
Vehicle information
Features
Reviews
They had the vehicle I wanted so it was fast, easy on the
They had the vehicle I wanted so it was fast, easy on the paperwork, and I got a good deal. Bruce is an excellent salesperson!
This is your Truck
When looking at price point vise equipment, This is your truck. I looked at every 2500/3500 on the market, same vehicle equipment and price. I chose the Duramax.. HP, Torque of this Diesel, truck equipment that the SLT price point had everything that I wanted for safety, appearance and comfort, none other came close. This is your truck...






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
First Class Experience
Okay, this is an older facility without all the excesses that are in so many new dealerships. I believe that the lower overhead results in a lower price for the customer. My sales person, Lou Margetis, was outstanding in answering my questions, making sure that I got to look at and drive all the vehicles that I was interested. Working with Lou, and Timothy Goodman, the New Car Director, I got what I thought was an excellent price on a new Kona SEL Plus, much better than any other Hyundai dealership. Then, Timothy Goodman made sure that I was taking advantage of all the Hyundai specials, and another $1000 came off - wow, now I had a deal that I could not refuse. I bought the Kona and drove it home that evening. Then, a few days later, Katarina, their customer relations specialist followed up, and was very helpful in answering a few questions and was sincerely interested that everything went well. It was an awesome experience, and I highly recommend this dealership. Finally, I was also very impressed that this dealership was taking the Covid-19 issue very seriously and making sure everyone was safely taken care of.
So far have loved my 2020 2500 HD 4x4 diesel
I have owned my truck for a month and two weeks. Two weeks after owning it my power steering went out for about 25 miles then was OK again. Last week the check engine light went on and after about 25 miles it turned off and it was OK a week ago I entered my truck to start off for the day and everything was dead absolutely had no sign of life. The dealership has now had it for exactly a week and they cannot figure out what’s going on. They say they’re having problems receiving communicating. I sure hope I will continue to love my truck. It drives like a dream and pulls like an ox.




Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Vary nice people, vary good at helping In explaining
Vary nice people, vary good at helping In explaining about the car,and the price. I was not able to go to get the car do to Family issues.






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Very professional and friendly, good people to deal with
Very professional and friendly, good people to deal with not like your regular big car dealerships. Would highly recommend this place to others in the automotive market.






Vehicle information
Features
Reviews
I went in and they worked with me quickly on the truck
I went in and they worked with me quickly on the truck that I was looking at and addressed all of the issues/concerns that I had immediately. I highly recommend this place if you’re looking for a pick up.

Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Great buying experience, much better than other
Great buying experience, much better than other dealerships for buying a vehicle. They didn't force us to add an extended warranty or other typical dealership nonsense.






Used
2020 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Jeremy was incredible and made the process of buying a
Jeremy was incredible and made the process of buying a new car so easy. When it’s time for a new car, he will be my go to salesman.
There are 20 matching cars close to your year range.




Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2018 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2019 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features




Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features






Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features






GMC Certified
2021 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2018 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2019 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
-
Prev - 1
-
Next
GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 2500 | $44,995 | 2 Good deals |
2024 GMC Sierra 2500 | $34,995 | 26 Good deals |
About the 2020 GMC Sierra 2500
Base shown (base trim).
- Seating
- 3
- 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 2500 cost?
The 2020 GMC Sierra 2500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 2500 is $52,540, with pricing starting at $23,987.
What are some similar vehicles and competitors of the 2020 GMC Sierra 2500?
The 2020 GMC Sierra 2500 compares to and/or competes against the following vehicles:
Is the 2020 GMC Sierra 2500 reliable?
The 2020 GMC Sierra 2500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 2500 owners.
Is the 2020 GMC Sierra 2500 a good truck?
Below are the Cars.com consumer ratings for the 2020 GMC Sierra 2500.
- Comfort 4.9
- Interior 4.9
- Performance 4.8
- Value 4.5
- Exterior 4.9
- Reliability 4.7
91% of drivers recommend this car
- Comfort 4.9
- Interior 4.9
- Performance 4.8
- Value 4.5
- Exterior 4.9
- Reliability 4.7
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 172" AT4 | 4WD Crew Cab 159" AT4 |
Inventory price | |
Starting at $58,500 | Starting at $58,300 |
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 (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
4WD Double Cab 162" | 4WD Crew Cab 159" | 2WD Crew Cab 172" | 4WD Double Cab 149" | 4WD Crew Cab 172" | 2WD Double Cab 162" | 2WD Crew Cab 159" | 2WD Double Cab 149" | 4WD Reg Cab 142" | 2WD Reg Cab 142" |
Inventory price | |||||||||
Starting at $41,400 | Starting at $43,000 | Starting at $40,400 | Starting at $41,200 | Starting at $43,200 | Starting at $38,600 | Starting at $40,200 | Starting at $38,400 | Starting at $38,600 | Starting at $35,800 |
Combined MPG | |||||||||
0 | 0 | 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) | 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 159" Denali | 4WD Crew Cab 172" Denali |
Inventory price | |
Starting at $64,300 | Starting at $64,500 |
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 (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
4WD Reg Cab 142" SLE | 2WD Reg Cab 142" SLE | 2WD Crew Cab 172" SLE | 2WD Crew Cab 159" SLE | 4WD Double Cab 162" SLE | 4WD Crew Cab 159" SLE | 2WD Double Cab 162" SLE | 4WD Double Cab 149" SLE | 2WD Double Cab 149" SLE | 4WD Crew Cab 172" SLE |
Inventory price | |||||||||
Starting at $43,200 | Starting at $40,400 | Starting at $44,400 | Starting at $44,200 | Starting at $45,400 | Starting at $47,000 | Starting at $42,600 | Starting at $45,200 | Starting at $42,400 | Starting at $47,200 |
Combined MPG | |||||||||
0 | 0 | 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) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLT (8 styles)
Style | |||||||
---|---|---|---|---|---|---|---|
2WD Double Cab 149" SLT | 4WD Double Cab 149" SLT | 4WD Crew Cab 172" SLT | 4WD Double Cab 162" SLT | 2WD Crew Cab 172" SLT | 2WD Double Cab 162" SLT | 2WD Crew Cab 159" SLT | 4WD Crew Cab 159" SLT |
Inventory price | |||||||
Starting at $51,000 | Starting at $53,800 | Starting at $55,800 | Starting at $54,000 | Starting at $53,000 | Starting at $51,200 | Starting at $52,800 | Starting at $55,600 |
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) |
*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.
Research the 2020 GMC Sierra 2500
Compare the 2020 GMC Sierra 2500
- ${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}