* Based on opinions and should be considered as general guidance only.
- Reliability (4)GMC's heavy-duty trucks generally have a strong reputation for reliability, and the 2024 model is expected to continue this trend. The robust Duramax diesel engine and Allison transmission are proven workhorses, inspiring confidence in its long-term durability.
- Maintenance (3)As with any heavy-duty truck, maintenance costs can be higher than a standard vehicle due to the specialized components and larger fluid capacities. Parts can also be more expensive, but routine service intervals are reasonable for the class.
- Technology (5)GMC has packed the Sierra 2500HD Denali with cutting-edge technology. The large infotainment screen is intuitive and responsive, and features like the multi-view camera system, head-up display, and advanced trailering tech are incredibly useful and well-integrated.
- Comfort (5)The Denali trim truly shines in comfort. The cabin is exceptionally quiet, and the seats are plush and supportive, perfect for long hauls. The ride, while firm due to its HD nature, is remarkably smooth for its class, absorbing most road imperfections with ease.
- Dynamics (4)For a heavy-duty truck, the Sierra 2500HD Denali handles surprisingly well. The steering is responsive, and body roll is managed effectively, making it feel more composed than expected on the road, especially with its substantial size.
