See also:

Battery Replacement
Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body could damage the transmitter. Replace the battery if the REPLACE BATTERY IN REMOT ...

OnStar Mobile App
With an iPhone® or Android™-based mobile device, an OnStar mobile app can be downloaded. The vehicle can be remote started, if equipped, or the doors can be unlocked from anywhere there is ...

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 ...