Buick Lesabre Radio Not Working

The Radio In My 2002 Buick Lesabre (78,000) Quit Working Today And The Display Froze. The Display Shows A Radio Frequency, "scan"...

My Radio Will Not Stop Playing, Even After I Turn It Off, Turn Off The Engine And Open The Door. What Should I Do? I Am Afraid Of What It...

I Suddenly Lost All Radio Reception. Even Had An Adaptor That Sent My Cell Phone Over The Radio...doesn't Work Either. Now When I Start...