Multi-Band Antenna
The antenna located on the roof of the vehicle is used for the OnStar, XM Satellite Radio Service System, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
If the vehicle has a sunroof and it is open, the performance of OnStar, XM, and GPS can be affected.
See also:
Accessories and Modifications
Adding non—dealer accessories or making modifications to the vehicle can
affect vehicle performance and safety, including such things as airbags,
braking, stability, ride and handling, emissions sys ...
Entry/Exit Recall
If the vehicle has this feature, it
allows you to select your preferred
automatic recall of stored memory
and exit positions. See Memory
Seats for more
information.
Press the customization ...
STABILITRAK NOT READY
This message may display after first
driving the vehicle and exceeding
30 km/h (19 mph) for 30 seconds.
The TCS/StabiliTrak warning light
on the instrument panel cluster also
comes on. The St ...