CHEVROLET IMPALA REAR WINDOW DEFROSTER NOT WORKING

My Rear Window Defroster Is Not Working When I Push The Button The Light Comes On But Nothing Happens Any Ideas On The Problem? Where Is The...

The Heating Element On The Rear Windshield Doesn't Work! The Indicator Light Comes On When I Press It, But The Window Doesn't Heat...

Rear Defrost Won't Work. It Worked Yesterday And Just Stopped Working. Could It Be A Fuse Problem.

Defroster Worked Fine, Started Having A Problem With The Blower Motor Not Working, But If You Slapped The Lower Dash Between The Defroster...

How Many Terminal On The Relay Should Be Hot? And Is The Heated Mirror Fuse Have Anything To Do With It? Thanks