See also:

Dome Lamps
The dome lamps will come on when you open a door unless the dome lamp override is pressed in. ...

Engine Oil Additives
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all you will need for good performance and engine protection. ...

When to Inspect the Engine AirCleaner/Filter
Inspect the air cleaner/filter at the Maintenance II intervals and replace at the first oil change after each 50,000 mile (83 000 km) interval. If you are driving in dusty/dirty conditions, inspec ...