Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Hitch Cover (without Dual Exhaust)
The vehicle may have a hitch cover. To remove the hitch cover:
1. Turn the fasteners on the lower tabs 90 degrees counterclockwise.
2. Lift the lower edge of the cover about 45 degrees.
3. Pull t ...
Other Navigation Services Available from OnStar
OnStar eNav: Allows subscribers to send destinations from Google Maps and MapQuest.com
to their Turn-by-Turn Navigation or screen-based navigation system. When ready,
the directions will be downlo ...
Parking Brake
The vehicle has an Electric Parking Brake (EPB). The switch for the EPB is
in the center console.
The EPB can always be activated, even if the ignition is off. To avoid
draining the battery, ...