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*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.
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Used
2020 GMC Sierra 2500 trucks
for sale
near
East Merrimack, NH
- 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 SLT
Vehicle information
Features
Reviews
ALWAYS HELPFUL
I have purchased a couple vehicles here for my family and Kevin and his team have always been super helpful. I appreciate the time you take to review the different options on financing and help us understand the process. Thank you!
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 Base
Vehicle information
Features
Reviews
2007 Toyota tundra
Got a truck from them bought running boards for the pickup but couldn’t put them on cuz running boards were rotted so called Tim’s an they said bring the truck down an fixed the issue thank you
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
Great service, great business practice.
We purchased a Mazda CX-50 from Tulley Mazda in Nashua NH. We had a problem with the new vehicle and had to bring it to the dealer several times until the tech finally found the problem in a wire harness under the dashboard. We were given a loner each time we had to leave the car . Alex and their team are the best. They are professional in the way they do business. Have purchased cars from other dealers and never had such great service .
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.






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
They provide a great experience in dealing with them.
They provide a great experience in dealing with them. Still looking for a particular truck.
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...






GMC Certified
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
I recommend Banks and especially our sales person Kevin
I recommend Banks and especially our sales person Kevin Mathis! He was knowledgeable, personable, and efficient. We also had a great experience with his manager and finance manager. Overall, I can’t say enough good things about the experience and I love my Denali. You are shopping for a new vehicle or use vehicle. I highly recommend banks and Kevin Mathis
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.






GMC Certified
2020 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Outstanding Customer Service.
Outstanding Customer Service. Sales rep was outstanding I would recommend Banks to anyone who is looking to purchase a New or Certified Used vehicle






GMC Certified
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Not only would I recommend Banks my neighbor took the 90
Not only would I recommend Banks my neighbor took the 90 minute drive up and bought a truck the next weekend after I bought mine.






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Everyone at Tulley was great!
Everyone at Tulley was great! They even took my old car as a trade and gave me a great deal.






Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Trust Restored......
I am a new and satisfied customer. Being a woman with little to no car knowledge, they provided 100% accurate info. Not the case with me in the past. They certainly restored my trust in car dealers and mechanics. They didn't add unnecessary work and only did what was needed. I'd recommend my closest friends.

GMC Certified
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Fantastic Service and Sales department.
Fantastic Service and Sales department. My family and I jae purchased mulitple GM's and use Tulley Buick GMC's service department exclusively. Thank you Tulley.
Vehicle information
Features
Reviews
My experience was fantastic.
My experience was fantastic. I've gone to Kris Dumont for my last 3 cars now, and I continue to go back to Banks because he is there. Buying a new car was fast and convenient for my schedule, and Kris goes above and beyond to ensure a smooth experience.
Used
2020 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Banks in the premiere new and used car dealership in New
Banks in the premiere new and used car dealership in New England! They have the biggest selection of GMC, Chevrolet, Buick and Cadillac. The sales people are always willing to go the extra mile to provide what you ask for and the service is professional and efficient. Banks is the only one that I would recommend to everyone. go BANKS! You’re the best!!

Used
2020 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
AWESOME COMPANY!
I've not been to the lot yet so can't rate anything but customer service. And their customer service is A . By far, the nicest and most honest dealership I've ever spoken to.
There are 20 matching cars close to your year range.






Used
2022 GMC Sierra 2500 SLE
Vehicle information
Features






Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Vehicle information
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GMC Certified
2022 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2019 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 2500 SLT
Vehicle information
Features






GMC Certified
2022 GMC Sierra 2500 Denali
Vehicle information
Features






GMC Certified
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2018 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features



GMC Certified
2022 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features



Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2021 GMC Sierra 2500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features

Used
2022 GMC Sierra 2500 SLE
Vehicle information
Features
Used
2022 GMC Sierra 2500 Denali
Vehicle information
Features
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GMC Sierra 2500 prices by year
Model year | Average price | Deals |
---|---|---|
2026 GMC Sierra 2500 | $77,387 | |
2025 GMC Sierra 2500 | $77,402 | 3 Good deals |
2024 GMC Sierra 2500 | $70,234 | 14 Good deals |
2022 GMC Sierra 2500 | $55,695 | 10 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 $51,405, with pricing starting at $20,031.
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
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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.