See also:

Vehicle Information Menu Items
Press MENU on the turn signal lever until the Vehicle Information Menu is displayed. Use w / x to scroll through the following menu items: Unit Tire Pressure Remaining Oil Life Battery Vol ...

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated. A Driver Information Center (DIC) tire pressure message may also display. See Vehicle Messages  for more informati ...