Thru firewall of 2004 Tahoe

I need to run a cable thru the firewall of my 2004 Tahoe, any suggestions on the easiest access point?

wat kind of cable r u trying to run?

There is a grommet where your cable for the e-brake goes.  It is on the driver's side by the rocker.  You can drill through the fire wall.  There is also a grommet on the fire wall (denpending on year) that you can cut open to draw a wire through.  It's for the cruise control.