The 2015 GMC Sierra uses SAE 5w-30 viscosity, fully synthetic motor oil in itS6-cylinder engine. It uses 0w-20 viscosity synthetic fluid in the v8 (8-cylinders). The vehicle has an oil capacity of 5.5 quarts and 6 quarts in each, respectively.
How much oil does a 5.3 GMC Sierra take?
The 5.3L V8 engine and the 6.2L V8 both use 0W-20 and have the capacity for 8 quarts of oil.