What oil goes in a 2005 Chevy silverado with 5.3 liter engine?

The 2005 Chevy Silverado with a 5.3L engine calls for 5W-30 motor oil. However, always check your owner's manual for the most accurate and up-to-date recommendation. The type of oil (conventional, synthetic blend, or full synthetic) is a matter of preference and budget, but 5W-30 is the viscosity grade recommended.