CHEVROLET SILVERADO FUSE PANEL LOCATION

I Have An Electrical Connector On A Duramax Diesel. It Is A Large Connector Near The Fuse Box. It Has A Leverlock Arm To Lock It In Place....

I Have No Ignition Or Battery Power At The Radio, I Have Tested At The Fuse Box On The Left Side Of The Dash And Neither Fuse Has Power On...