The destination download lets an OnStar® subscriber ask an OnStar Advisor to download a destination to the navigation system. OnStar will send address information and location coordinates of the destination into the navigation system.
Using Destination Download
If the navigation radio screen is turned off before a download, the system automatically turns the screen on and displays a download confirmation message. The radio remains on after the download.
The navigation system displays “Please wait” as the address is searched within the map database.
If the address is not found within the map database, the system may use latitude and longitude coordinates to locate the destination.
If the system is unable to locate the address, the Destination Not Found screen displays.
Route Guidance Not Active
If an OnStar destination is downloaded while route guidance is not active, the navigation system displays a pop-up screen with the following screen functions:

Start Guidance:
Press to start route calculation to the destination(s) received.
Show on Map
: Press to display the Map Screen.
Call
: Press to initiate a call with Bluetooth Phone (if available) or OnStar Hands-Free Calling.
Save as Home:
Press to set an address as a home destination.
Save: Press to save the downloaded destination to the address book.
Route Guidance Active
If an OnStar destination is downloaded while route guidance is already active, the system displays a pop-up screen with the following screen function: • Press Start Guidance; the navigation system adds the downloaded destination before the next waypoint of the existing route (closest to the current vehicle position).
• All other buttons on the pop-up screen operate as described under “Route Guidance Not Active.”
Previous Destinations
Previously downloaded OnStar destinations are saved under Previous Destinations in the navigation system, where they can be accessed or saved to the Address Book.
Destination
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See your dealer or a hitch dealer for assistance.
• The rear bumper on the vehicle is not intended for hitches. Do not attach
rental hitches or other bumper-type hitches to it. Use only a frame-mounted hitch
that does not attach to the bumper.
• ...
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Remove the rear side door inner panel trim. Refer to Rear Side Door Trim
Replacement.
Rear Side Door Wiring Harness
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Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise, commonly referred
to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.
If hea ...