'04 Sierra 1500 where's the hole?

The snowplow prep package specs on a 2004 Sierra 1500 lists a '...1.65" (42mm) access hole with grommet in front of dash panel for mounting snow
plow controls'. I've been looking but I can't find it. I need to route some wiring from inside the cab to the front bumper area. Any help? Thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.