I'm having tons of trouble removing the speaker covers/grills all around on a '91 Sedan DeVille, and can't seem to find any info on getting them out without breaking something. If anyone can help me out I'd appreciate it.

Here is a step by step process...

http://carstereohelp.com/strcadillac.htm

I used the Carstereohelp instructions recently and they work like a charm.

those directions are amazing i was having the same problems. I was playing the stock system too loud and blew all of the speakers except two. not good. never would have guessed it was that much work.