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.

    See also:

    Chime Volume
    This allows the selection of the chime volume level. Press the MENU/SELECT knob when Chime Volume is highlighted. Turn the knob to select Normal or High. Press the knob to confirm and go back t ...

    AVG (Average) Economy
    Displays the approximate average liters per 100 kilometers (L/100 km) or miles per gallon (mpg). The calculation is based on the number of L/100 km (mpg) recorded since the last time this di ...

    Tire Messages
    SERVICE TIRE MONITOR SYSTEM This message displays if there is a problem with the Tire Pressure Monitor System (TPMS). See Tire Pressure Monitor Operation for more information. TIRE LEARNING ACT ...