Hide series of Columns Ranges

I'm trying to hide a selection of several column ranges with a macro. When I run the following code, instead of hiding the ranges indicated, like it would if you did this manually, it instead hide all columns right from B to AG, which are not even the outside limits of my selections. I have panes frozen on this sheet. Could that be affecting this?
Thanks.

Sub HideSystem()




    Range("G:H,M:N,S:T,Y:Z,AE:AF").Select
    Selection.EntireColumn.Hidden = True
    Range("C8").Select
End Sub

Re: Hide series of Columns Ranges

nope, that was my code. But for some reason yours does the job. Don't know why, but thanks.