OnStar
Cadillac CTS / Cadillac CTS Owners Manual / OnStar
See also:
Engine Oil Messages
CHANGE ENGINE OIL SOON
When this message displays, it
means that service is required for
the vehicle. See your dealer.
See Maintenance Schedule and Engine Oil for more information.
When you res ...
Conference Calling
Conference calling and three—way calling must be supported on the Bluetooth
phone and enabled by the wireless service carrier to work.
To start a conference while in a current call:
1. Turn or ...
Recommended Fuel
If the vehicle has a V6 engine,
use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, an audible knocking noise,
commonly referred ...






