* Based on opinions and should be considered as general guidance only.
- Reliability (4)GMC heavy-duty trucks generally have a strong reputation for reliability, and the 2023 Sierra 3500HD SLT is expected to follow suit. The Duramax diesel engine is a proven workhorse.
- Maintenance (3)Maintenance costs can be higher than average due to the specialized components and larger fluid capacities of a heavy-duty diesel truck. Parts can also be more expensive.
- Technology (4)The infotainment system is intuitive and responsive, featuring a large touchscreen, wireless Apple CarPlay and Android Auto. Driver-assist features are comprehensive, enhancing safety and convenience.
- Comfort (4)The cabin is spacious and well-appointed, with comfortable seating for long hauls. Ride quality is good for a truck of this size, absorbing most road imperfections without excessive harshness.
- Dynamics (4)For a heavy-duty truck, the 2023 GMC Sierra 3500HD SLT handles surprisingly well, offering stable highway cruising and predictable steering. It's not nimble, but it's confident.