Automatic Headlamp System
When it is dark enough outside, the headlamps come on automatically.
Do not cover the light sensor on top of the instrument panel or the headlamps will come on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
See also:
Turning XM Album Art On or Off
1. From the Home Page press the Config screen button or the CONFIG button on
the faceplate.
2. Select Radio Settings from the Config Menu list.
3. Select XM Album Art to turn on or off. ...
Powertrain details
The GMC Sierra All Terrain HD concept is propelled by the new, production
6.6L Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission
powertrain combination offered in the 2011 ...
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and
displays the CHANGE ENGINE OIL SOON message when it is time to change the engine
oil and filter. The oil life system ...