Power & Performance
There isn't much difference in the power and capabilities between the Chevy Silverado 1500 and GMC 1500. Horsepower, torque, engine, and tire size remain the same. Thus, granting them both the same mileage and driving range. Choosing between the two will have to come down to other factors, like aesthetic preferences and functionality.
Design & Technology
Both seating six passengers, the Chevy Silverado 1500 is a longer and larger truck compared to its rival, the GMC 1500. That said, all six passengers will have the exact amount of headroom, legroom, and shoulder room in each truck. So if you need a truck with a bit more inches in the bed, the Chevy Silverado 1500 will be your best bet. With the Chevy Silverado 1500, you'll get two more interior color options and three more exterior color options than in the GMC Sierra 1500. Additionally, navigation, satellite radio, keyless ignition, and cruise control are not standard technology options in the GMC 1500.