2018 GMC Sierra 1500 SLE is a Truck (Regular Cab) model with 6-speed shiftable automatic transmission. This is a rear wheel drive model With a power of 285 HP and 305.00 ft lbs of torque. An urban consumption is 18.00 MPG. The engine has a capacity of 4.30L with V6 cylinders. To view detailed specifications like fuel consumption and dimensions, please scroll below.