See also:

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. ...

Control of a Vehicle
Braking, steering, and accelerating are important factors in helping to control a vehicle while driving. ...

Power Steering Fluid
See Engine Compartment Overview on page 10‑6 for reservoir location. ...