* Based on opinions and should be considered as general guidance only.
- Reliability (4)GMC heavy-duty trucks generally have a strong reputation for reliability, especially their powertrains. While new models can have minor tech glitches, major mechanical issues are rare.
- Maintenance (3)Maintenance costs are higher than average due to the specialized components and larger fluid capacities of a heavy-duty truck. Parts can also be more expensive.
- Technology (5)Packed with advanced technology, including a large infotainment screen, comprehensive driver-assist features, and excellent camera systems that greatly aid in towing and maneuvering such a large vehicle.
- Comfort (5)The Denali trim truly shines in comfort. The interior is luxurious with high-quality materials, heated and ventilated seats, and ample space. The cabin is surprisingly quiet, making long journeys very pleasant.
- Dynamics (4)Given its size, the Sierra 3500HD Denali handles remarkably well. The steering is precise for a heavy-duty truck, and the ride, while firm, is controlled even when unladen. Towing stability is excellent.
