Global Positioning System (GPS)
○ Obstruction of the GPS can occur in a large city with tall buildings; in parking
garages; around airports; in tunnels, underpasses, or parking garages; or in an
area with very dense trees. If GPS signals are not available, the OnStar system
should still operate to call OnStar. However, OnStar could have difficulty identifying
the exact location.
○ In emergency situations, OnStar can use the last stored GPS location to send to
emergency responders.
○ A temporary loss of GPS can cause loss of the ability to send a Turn-by-Turn Navigation
route. The Advisor may give a verbal route or may ask for a call back after the
vehicle is driven into an open area.
See also:
Finding a Category (CAT) Station
CAT (Category): The CAT button is used to find XM stations when the radio is in the XM mode.
To find XM channels within a desired category:
1. Press BAND until the XM frequency displays.
2. Press C ...
Floor Mats
WARNING
If a floor mat is the wrong size or is not properly installed, it can interfere
with the pedals. Interference with the pedals can cause unintended acceleration
and/or increased stopping d ...
What to Add
Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids
and Lubricants on page 11‑12.
Always clean the brake fluid reservoir cap and the area around the cap before
re ...





