See also:

Fuel Economy Mode
The vehicle may have a fuel economy mode. When engaged, fuel economy mode can improve the vehicle's fuel economy. Pressing the eco button by the shift lever will engage fuel economy mode. Whe ...

Connections
OnStar Hands-Free Calling allows calls to be made and received from the vehicle. The vehicle can also be controlled from a cell phone through the OnStar mobile app. See www.onstar.com for coverage m ...

Checking Brake Fluid
Check brake fluid by looking at the brake fluid reservoir. See Engine Compartment Overview  . The fluid level should be above MIN. If it is not, have the brake hydraulic system checked to ...