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Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push to try the call again or try again after driving a few miles into ...

Setting Preset Stations
Up to 30 stations (six FM1, six FM2, and six AM, six XM1 and six XM2 (if equipped), can be programed on the six numbered pushbuttons, by performing the following steps: 1. Turn the radio on. 2. ...

Engine Oil Additives
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all you will need for good performance and engine protection. ...