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The 2021 GMC Sierra 2500HD Truck comes in only 1 body type: Truck. The Sierra 2500HD Truck is available in 5 different trim level options: Base, SLE, SLT, AT4 and Denali. The Base is the base trim level option, while the Denali is the highest, most expensive configuration.
In this guide, we will breakdown the differences between each GMC Sierra 2500HD Truck configuration and help you determine which trim level to purchase.
Below is a table comparing some of the major features for the most popular GMC Sierra 2500HD Truck trim levels.
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