OnStar Services

See also:

When to Add Engine Oil
If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil and then recheck the level. See “Selecting the Right Engine Oil” in this section ...

Older Children
Older children who have outgrown booster seats should wear the vehicle’s safety belts. Q: What is the proper way to wear safety belts? A: An older child should wear a lap-shoulder belt and get ...

Using Voice Commands During a Planned Route
Cancel Route 1. Push . System responds: “OnStar ready,” then a tone. Say “Cancel route.” System responds: “Would you like to cancel route directions to your destination?”. 2. Sa ...