Active Fuel Management™

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With Active Fuel Management™ technology from GM, Silverado Vortec 5.3L and Vortec MAX 6.0L V8 engines deliver power when you need it. In situations where extra power is not needed, such as cruising down the highway on level roads, Active Fuel Management™ deactivates four of the eight cylinders with seamless precision. In fact, this technology helps properly equipped Silverado 1500 models to offer impressive efficiency. Here's how this smart technology works:

• When load demands increase, such as when the truck accelerates or travels uphill, cylinders are reactivated to provide eight-cylinder operation.
• The powerful 32-bit engine control computer triggers cylinder deactivation based on inputs from vehicle sensors — making deactivation almost undetectable.
• The bottom line: The next-generation Vortec 5.3L and Vortec MAX 6.0L engines are more efficient in providing the energy to move the vehicle when only four of the eight cylinders are operating.