See also:

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 ...

Pairing
A Bluetooth enabled mobile phone must be paired to the UHP system first and then connected to the vehicle before it can be used. See the mobile phone manufacturer's user guide for Bluetooth ...

Bulb Replacement
For the proper type of replacement bulbs, see Replacement Bulbs. For any bulb changing procedure not listed in this section, contact your dealer/retailer. ...