Using the Re-dial Command
1. Press and hold 
for two
seconds. The system
responds with “Ready” followed by a tone.
2. After the tone, say “Re-dial”. The system responds with “Re-dial using <phone name>” and dials the last number called from the connected Bluetooth phone.
Once connected, the person called will be heard through the audio speakers.
See also:
Storing Name Tags
The system can store up to thirty phone numbers as
name tags that are shared between the Bluetooth and
OnStar systems.
The system uses the following commands to store and
retrieve phone numbers ...
Battery Load Management
The vehicle has Electric Power
Management (EPM) that estimates
the battery's temperature and state
of charge. It then adjusts the voltage
for best performance and extended
life of the batter ...
Trunk
WARNING!
Exhaust gases can enter the
vehicle if it is driven with the
liftgate, trunk/hatch open, or with
any objects that pass through the
seal between the body and the
trunk/hatch or lift ...