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All of the Garmin nüvi GPS device require satellite signal. This includes the nüvi 66LMT and the nüvi 2689LMT. {CW}
Sorry, there was a problem. Please try again later.Garmin website stated: Does not rely on cellular signals; unaffected by cellular dead zones. https://buy.garmin.com/en-US/US/on-the-road/automotive/2014-line/nuvi-66lmt/prod147610.html
Sorry, there was a problem. Please try again later.This GPS relies upon GPS satellites.
Sorry, there was a problem. Please try again later.Turn On GPS UNIT Go into Settings Choose Device Press Restore / Reset --or-- Press Restore / Reset Factory Settings
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