This 2015 GMC Sierra 1500 Base 4x4 is a powerful and reliable vehicle. It has a 5.3 liter EcoTec3 V8 355hp 383 lb-ft engine with direct injection, and fuel economy of 16 mpg in the city and 22 mpg on the highway. It also has a crash test rating of 5 out of 5 stars, making... via EveryCarListed.com