See also:

Additional Required Services
Every 12 000 km/7,500 Miles ► Rotate tires. Tires should be rotated every 12 000 km/ 7,500 miles. See Tire Rotation . At Each Fuel Stop ► Engine oil level check. See Engine Oil . ...

Horn
Press on the steering wheel pad to sound the horn. ...

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. ...