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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. ...

Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck capability combined with greater off-road versatility. It is highlighted by a bold exterior design, enhanced all-terrain ...

Instrument Panel (Premium Version)
Instrument Panel (Premium Version) A. Air Vents on page 8‑11. B. Turn and Lane-Change Lever. See Turn and Lane-Change Signals on page 6‑6. Windshield Wiper/Washer on page 5‑5 ...