The 2020 GMC Sierra 3500 HD is a heavy-duty, highly capable, full-size luxury truck — and it’s luxurious, too. Today I’m reviewing the new 2020 Sierra HD and I’m going to show you all the quirks and features of the latest heavy-duty Sierra 3500 HD, and I’m going to drive the new Sierra HD and show you what it’s like on the road.
GMC SIERRA 1500 REVIEW:
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