For the ultimate heavy-duty truck in GMC’s lineup, there’s the 2025 Sierra 3500HD, fresh off 2024’s major update. This year, the Sierra 3500HD carries over with a series of small tweaks to ...

For when the Sierra 1500 doesn’t offer enough capability and the 3500HD is too much, the 2025 GMC Sierra 2500HD serves as a sort of heavy-duty middle ground. Most recently refreshed for the 2024 ...