2006 Pontiac Grand Prix Owner's Manual - Page 99

Displacement on Demand™ (DoD™) (5.3L Engine) Your vehicle's engine may be equipped with Displacement on Demand™ (DoD™). This system allows the engine to operate on either all or half of its cylinders, depending on your 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 your 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. When greater power demands are required, such as accelerating from a stop, passing, or merging onto a freeway, the system will maintain eight-cylinder operation. When less power is required, such a cruising at a constant vehicle speed, the system will automatically enable the four-cylinder mode, allowing your vehicle to achieve better fuel economy. Automatic Transaxle Operation The shift lever for the automatic transaxle is located on the console between the seats. Maximum engine speed is limited when the vehicle is in PARK (P) or NEUTRAL (N) to protect driveline components from improper operation. There are several different positions for the shift lever. 3800 V6 Engine 2-25