Active Fuel Management®
Vehicles with V8 engines may have Active Fuel Management™. This system allows the engine to operate on either all or half of its cylinders, depending on the driving conditions.
When less power is required, such as cruising at a constant vehicle speed, the system will operate in the half cylinder mode, allowing the vehicle to achieve better fuel economy. When greater power demands are required, such as accelerating from a stop, passing, or merging onto a freeway, the system will maintain full-cylinder operation.
If the vehicle has an Active Fuel Management™ indicator, see Driver Information Center (DIC) on page 5‑33 for more information on using this display.
See also:
Anti-theft Alarm System
On vehicles with an anti-theft alarm system, to activate the system:
• Press on the Remote Keyless Entry (RKE) transmitter or the power door lock switch when any door is open.
The security ligh ...
Vehicle Overview
Though gas mileage ratings for GM's full-size SUVs are impressive among their
competitive set, they aren't likely to bring smiles to anyone at the pump; their
combined ratings still linger in the ...
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chime may sound when the cooling system temperature gets too hot and the engine further enters the engine coolant protection mode. See Engine Overh ...





