sierra HD

Check Out These Updates to the 2021 GMC Sierra Heavy Duty

For the 2021 model year, the GMC Sierra 2500HD and GMC Sierra 3500HD have gained some exciting new updates. GMC knows that trailering is a priority for Sierra Heavy Duty drivers — that’s why the automaker added a wealth of helpful innovations to the latest model of this all-American workhorse. Here’s what’s new on the […]

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