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:
Low Fuel Warning
When the fuel in the vehicle becomes low, a pop-up displays “Fuel is low. Search
for nearby Gas station?”
1. Press OK to show a list of nearby gas stations.
2. Press GO next to the desired gas s ...
Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if ...
Storing a Station as a Favorite
Stations from all bands can be stored in any order in the favorite pages.
Up to six stations can be stored in each favorite page and the number of
available favorite pages can be set.
Storing S ...