Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M 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:
Dual Tone Multi-Frequency (DTMF) Tones
The in-vehicle Bluetooth system can send numbers and the numbers stored as name tags during a call.
Use this feature when calling a menu-driven phone system.
Account numbers can also be stored for u ...
Horn
Press near the horn symbols or press on the steering wheel pad to sound the horn. ...
Storing Name Tags
The system can store up to 30 phone numbers as name tags that are shared between the Bluetooth and OnStar systems.
The system uses the following commands to store and retrieve phone numbers:
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