OnStar Services

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Recommended Fluids andLubricants
Fluids and lubricants identified below by name, part number, or specification may be obtained from your dealer. ...

Making a Call
To make a call: 1. Press . 2. Select Enter number. 3. Enter the character sequence. See “Entering a Character Sequence” in Operation for more information. 4. Select Call to start dialing th ...

Weatherstrips
Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application m ...