Final update - Stouffville Line - Equipment issue Started Until Mon Dec 15 The equipment issue at Markham GO has been resolved. Regular train service will resume making all stops between Union Station and Mount Joy starting with the Mount Joy GO 14:25 - Union Station 15:20 southbound train. The first northbound train to continue through to Mount Joy GO is the Union Station 13:00 - Mount Joy GO 13:56 service. There may be delays as we return to regular service. Please see below for current train status: