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About the 2021 GMC Sierra 3500
shown (base trim).
- Seating 2
- Door count 2
- Drivetrain Rear-wheel drive
- Combined MPG —
- Transmission 6-Speed A/T
- Engine 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

100% of drivers recommend this car
- Comfort 4.5
- Interior design 4.5
- Performance 5.0
- Value for the money 4.0
- Exterior styling 4.5
- Reliability 4.0
*Estimated payments are for informational purposes only. These estimates do not include tax, 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. They do not represent a financing offer or a guarantee of credit from the seller.
Research the 2021 GMC Sierra 3500
Compare the 2021 GMC Sierra 3500
GMC Sierra 3500 trims
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GMC Sierra 3500 2021 Denali
18 Great Deals out of 131 listings starting at $52,933
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GMC Sierra 3500 2021 Base
2 Great Deals out of 28 listings starting at $32,995
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GMC Sierra 3500 2021 AT4
8 Great Deals out of 25 listings starting at $57,969
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GMC Sierra 3500 2021 SLT
4 Great Deals out of 23 listings starting at $37,500
GMC Sierra 3500 by year
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2024 GMC Sierra 3500
4 Great Deals out of 86 listings starting at $51,500
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2023 GMC Sierra 3500
28 Great Deals out of 259 listings starting at $50,988
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2022 GMC Sierra 3500
72 Great Deals out of 448 listings starting at $38,000
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2020 GMC Sierra 3500
35 Great Deals out of 254 listings starting at $38,788
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2019 GMC Sierra 3500
21 Great Deals out of 146 listings starting at $38,495
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2018 GMC Sierra 3500
16 Great Deals out of 126 listings starting at $25,991
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2017 GMC Sierra 3500
7 Great Deals out of 70 listings starting at $33,099
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2016 GMC Sierra 3500
8 Great Deals out of 68 listings starting at $29,450
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2015 GMC Sierra 3500
5 Great Deals out of 74 listings starting at $25,995
Notable highlights
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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.
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