OnStar Turn-By-Turn Not Downloading
If OnStar Turn-by-Turn directions are not downloading to your radio after an upgrade with our factory navigation, please follow these instructions below to fix this issue:
The turn by turn directions download issue is fixed by OnStar they have to send the directions in a different format.
(Non navigation vehicles have a different format/provisioning than a factory navigation vehicles)
OnStar can change the format, but you have to speak with the advanced tech support or upper level tech support.
It may take a few days, and they will call you to let you know they had changed the format being sent to the vehicle.
To contact OnStar: Push your blue button or call 1-888-4ONSTAR to speak with a representative.
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