What weight oil for a 2003 Chevy pickup 2500?

For a 2003 Chevy Silverado 2500, the recommended oil weight is typically 5W-30 for most driving conditions. If the engine is experiencing high mileage or if you are operating in extremely high temperatures, you might consider using 10W-30. Always consult the owner’s manual for specific recommendations based on your vehicle's engine and local climate.