* Based on opinions and should be considered as general guidance only.
- Reliability (4)GMC trucks generally have a good reputation for reliability, and the 2023 Sierra 1500 SLT is expected to follow suit. Major mechanical components are well-proven, though some newer tech features might have minor initial quirks.
- Maintenance (3)Maintenance costs are typical for a full-size pickup. Parts and labor can be more expensive than smaller vehicles, and fuel economy, while improved, still contributes to ongoing operational costs.
- Technology (5)GMC has significantly upgraded the technology in the Sierra, featuring a large, intuitive infotainment screen, wireless Apple CarPlay and Android Auto, and a host of available driver-assistance features. The digital gauge cluster is a nice touch.
- Comfort (4)The interior is spacious and well-appointed, especially in the SLT trim. Seats are comfortable for long journeys, and the cabin remains relatively quiet at highway speeds. Rear passenger room is generous.
- Dynamics (4)The 2023 GMC Sierra 1500 SLT offers a surprisingly composed ride for a full-size truck, with responsive steering and adequate power from its available engines. While not a sports car, it handles daily driving and light towing with confidence.