OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be used to interact with OnStar Hands-Free calling.
See Steering Wheel Controls for more information.
On some vehicles, the Talk button can be used to dial numbers into voice mail systems, or to dial phone extensions. See the OnStar Owner's Guide for more information.
See also:
Hill and Mountain Roads
Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips for driving in these conditions include:
► Keep the vehicle serviced and in good shape.
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Connecting and Controlling a USB Drive (Radio with CD and Radio with
CD/DVD/MEM)
The infotainment system can only
play back .mp3 and .wma files from
a USB drive.
Only the first 2,500 songs are
recognized on the device.
When a device is not supported, the
message “No su ...
Engine Heater
The engine coolant heater,
if available, can help in cold weather
conditions at or below −18°C (0°F)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coo ...