Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless service carrier.
• Press
to answer an incoming call when another call is active. The original call is placed on hold.
• Press
again to return to the original call.
• To ignore the incoming call, no action is required.
• Press
to disconnect the current call and switch to the call on hold.
See also:
Storing and Deleting Phone Numbers
The system can store up to 30 phone numbers as name tags in the Hands&-Free Directory
that is shared between the Bluetooth and OnStar systems.
The following commands are used to delete and stor ...
Trailer Towing
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information.
If the vehicle is a hybrid, see the hybrid supplement for more information.
Do not tow a trailer during br ...
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge and a yellow fuel cap can use either unleaded
gasoline or ethanol fuel containing up to 85% ethanol (E85). For all other vehicles,
use only the unleaded gasolin ...





