Sub testing()
Dim ws As Worksheet, fndRng As Range
For Each ws In ThisWorkbook.Sheets
    With ws.Range("Y:Y")
        Set fndRng = .Find(What:="G", LookIn:=xlValues, LookAt:=xlWhole, _
            SearchOrder:=xlByRows, SearchDirection:=xlNext, MatchCase:=True)
        If Not fndRng Is Nothing Then
            fndRng.Offset(-1).Resize(, 2).Value = fndRng.Resize(, 2).Value
            fndRng.EntireRow.Delete
        End If
    End With
Next ws
End Sub