2018 GMC Sierra 1500
The 2018 GMC Sierra 1500 is a 2-door, 3-seat Regular Side, available in 28 trims, ranging from the Base 4x2 Regular Cab 6.5' Box to the Denali 4x4 Crew Cab 6.5' Box. Upon introduction, the $28,705 Base 4x2 Regular Cab 6.5' Box is equipped with a standard 4.3L, 6-cylinder, engine that achieves 18-mpg in the city and 24-mpg on the highway. an Automatic transmission is standard. The $56,055 Denali 4x4 Crew Cab 6.5' Box is equipped with a standard 5.3L, 8-cylinder, engine that achieves 15-mpg in the city and 20-mpg on the highway. an Automatic transmission is standard.