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:
Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced.
If the wheel leaks air, replace it.
...
Engine Overheating
The vehicle has an indicator to warn of engine overheating. There is an engine
coolant temperature warning light on the vehicle's instrument panel. See Engine
Coolant Temperature Gauge on page ...
Battery
Refer to the replacement number on the original battery label when a new battery is needed.
WARNING
Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known ...