* Based on opinions and should be considered as general guidance only.
- Reliability (4)GMC heavy-duty trucks generally have a good reputation for reliability, especially with proper maintenance. The powertrain options are proven performers, suggesting long-term durability.
- Maintenance (3)Maintenance costs are typical for a heavy-duty truck, which means they can be higher than a passenger car due to larger components and fluid capacities. Parts availability is generally good.
- Technology (4)The infotainment system is user-friendly with a good-sized touchscreen and includes essential features like Apple CarPlay and Android Auto. Driver-assist technologies are present and functional, enhancing safety and convenience.
- Comfort (4)The SLT trim offers a comfortable interior with quality materials. The seats are supportive for long drives, and the cabin is relatively quiet for a truck of this capability, though some road noise is expected.
- Dynamics (4)For a heavy-duty truck, the Sierra 3500HD handles surprisingly well. It feels stable on the highway and the steering is responsive enough for its size, though it's still a large vehicle.