The 2024 GMC Sierra 3500HD SLT combines unmatched heavy-duty capability with refined comfort and advanced technology. Built to handle the toughest towing and hauling tasks, it offers powerful performance and a durable, confident presence. Inside, the SLT trim delivers a premium, driver-focused cabin with modern convenience features. Strong, sophisticated, and ready for work or play, this Sierra 3500HD is built to exceed expectations.