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:
Satellite Radio
Vehicles with an XM™ satellite radio tuner and a valid XM satellite radio
subscription can receive XM programming.
XM Satellite Radio Service
XM is a satellite radio service based in the 48 con ...
Conversions and Add-Ons
Add-On Electrical Equipment
Notice: Do not add anything electrical to the vehicle unless you check
with your dealer first.
Some electrical equipment can damage the vehicle and the damage would no ...
STABILITRAK OFF
This message displays when you
turn off StabiliTrak, or when the
stability control system has
been automatically disabled.
The TCS/StabiliTrak warning light
on the instrument panel cluster al ...