OnStar Additional Information
See also:
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 ...
Manual Operation
(Power): Press to turn the climate
control system on or off.
(Fan Control): Turn to increase
or decrease the fan speed. Adjusting the fan speed while in automatic mode places
the fan under ma ...
Wiper Blades
Wiper blades need to be cleaned and kept in good condition to provide a clear view.
• Signs of wear include streaking, skipping across the windshield, and worn or split rubber.
• Trained dealer ...





