I just purchased a 2015 Tahoe LTZ – my nav system / GPS is also on the fritz – but I dont see a water issue at this point similar to Marmajune’s
Onstar indicator on rear view mirror is Red (not green) – indicating a problem, and the GPs map shows me off by at least 50 miles from current position.
CAL shown on dash display (calibrate?) – but I have no restriction from satellite access overhead. When map is visible a GPS with an X through it is visible – meaning no GPS data. Xm works – I figure that runs through same antenna.
Onstar tech says – bad Onstar module, or Antenna. Dealership going to try putting in a new antenna.
Anyone else have this pop up yet? should I create a new thread for just this issue?
