See also:

Voice Recognition
The voice recognition system uses commands to control the system and dial phone numbers. Noise: The system may not recognize voice commands if there is too much background noise. When to Speak: ...

Vehicle Overview
GM says the Sierra 1500 Hybrid's gasoline V-8 and electric motors team up for an overall mileage improvement compared with the regular Sierra. The Sierra Hybrid is only available as a rear- or fou ...

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...