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VEHICLE GUIDE
2021 GMC Sierra 2500hd
Get the important 2021 GMC Sierra 2500hd differences in one clear guide.
Compare 3 known trims and ownership for this model year, then open the exact trim and configuration when you want the details that change from one version to another.
3KNOWN TRIMS
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2021 model-year guide3KNOWN TRIMS
SPECS
Choose the exact version. See only what applies.
Move from trim to powertrain to drivetrain to configuration. AutoUnite keeps configuration-scoped facts attached to the version that supports them.