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Vehicle Overview
Though gas mileage ratings for GM's full-size SUVs are impressive among their competitive set, they aren't likely to bring smiles to anyone at the pump; their combined ratings still linger in the ...

Audio Output
Only one audio source can be heard through the speakers at one time. An audio source is defined as DVD slot, CD slot, XM, FM-AM, front auxiliary jack, USB port, or rear auxiliary jack. Press the O b ...

Using Voice Commands During a Planned Route
Cancel Route 1. Push . System responds: “OnStar ready,” then a tone. Say “Cancel route.” System responds: “Would you like to cancel route directions to your destination?” 2. Say “Yes.� ...