OnStar Services

See also:

Conditions in Which Remote Start Will Not Work
The remote vehicle start feature will not operate if: ○ The key is in the ignition. ○ The hood or doors are not closed. ○ The hazard warning flashers are on. ○ There is an ...

Express-Up/Express-Down Windows
A window with the express-up/down feature allows it to be raised or lowered without holding the switch. Press or pull the window switch fully and release it to activate the express feature. The expre ...

How to Add Coolant to the Radiator
WARNING An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan. WAR ...