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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. ...

How to Check Lubricant
2500HD with 6.0 L All Other Series and Engines To get an accurate reading, the vehicle should be on a level surface. • For all 4.3 L, 4.8 L and 5.3 L 1500 Series applications, the proper leve ...

Easy Exit Driver Seat
This feature can move the seat rearward to allow extra room to exit the vehicle. : Press to recall the easy exit seat position. The vehicle must be in P (Park). See Memory Seats on page 3‑7 a ...