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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 AT4 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.






Used
2020 GMC Sierra 2500 AT4
Vehicle information
Features
Reviews
Walberg GMC did a great job and my salesman Jeff Tucker
Walberg GMC did a great job and my salesman Jeff Tucker was very helpful, pleasant and knowledgeable about my truck and any questions I had. I would definitely recommend this dealership to anyone that is interested in a new or used vehicle.
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.
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GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 2500 AT4 | $67,773 | 6 Great deals |
2024 GMC Sierra 2500 AT4 | $61,022 | 6 Great deals |
2023 GMC Sierra 2500 AT4 | $52,771 | 99 Good deals |
2022 GMC Sierra 2500 AT4 | $43,995 | 20 Great deals |
2021 GMC Sierra 2500 AT4 | $45,200 | 11 Great deals |
About the 2020 GMC Sierra 2500 AT4
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 AT4 cost?
The 2020 GMC Sierra 2500 AT4 price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 2500 AT4 is $53,723, with pricing starting at $39,900.
What are some similar vehicles and competitors of the 2020 GMC Sierra 2500 AT4?
The 2020 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:
Is the 2020 GMC Sierra 2500 AT4 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 AT4 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
*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.
GMC Sierra 2500 trims
-
GMC Sierra 2500 2020 Base
395 Great Deals out of 3354 listings starting at $7,795
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