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:
Services Provided
• Emergency Fuel Delivery:
Delivery of enough fuel for the vehicle to get to the nearest service station.
• Lock-Out Service: Service to unlock the vehicle if you are locked out. A remote unlock ...
Shifting Into Four-Wheel Drive Low
When Four-Wheel Drive Low is engaged, vehicle speed should be kept below 72 km/h (45 mph).
Extended high-speed operation in Four-Wheel Drive Low may damage or shorten the life of the drivetrain.
To ...
SAFETY
The 2011 GMC Acadia, including the Denali trim, has been named a Top Safety
Pick by the Insurance Institute for Highway Safety. The Acadia received the top
score of Good in frontal-offset, side-im ...





