New for 2011
The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear.
See also:
Using the “List” Command
1. Press and hold for two seconds.
2. Say “Directory.” 3. Say “Hands-Free Calling.” 4. Say “List.” ...
Antilock Brake System (ABS) Warning Light
For vehicles with the Antilock Brake System (ABS), this light comes on briefly when the engine is started.
If it does not, have the vehicle serviced by your dealer. If the system is working normall ...
Making a Call
To make a call:
1. Press 5 once or twice (depending on the radio).
2. Enter the phone number.
3. Select Call to start dialing the number. ...





