Uninstall Garmin Maps from the Computer
Garmin map products may be removed from a computer if they are no longer needed or to free up disk space. Each map product and version will be listed individually and can be uninstalled separately.
To remove maps:
Windows:
On the keyboard, press the Windows key + R key together
In the text box, type appwiz.cpl
Click OK
Right-click the map product to uninstall
Click Uninstall
Mac OS X:
Open Finder
Open Applications
Open Garmin MapManager
Click the map product to uninstall
In the lower left corner, click the gear icon
Click Delete map
In the pop-up window, click Delete
Enter your Mac User Name and Password if requested
Once these steps are completed, the product will be uninstalled from the computer.