CHEVROLET RADIO REPLACE/REMOVE

1999 Chev. Corvette, 68,000 Mi, 5.7l V8 I Had The Battery Replaced And Now Have The Letters "loc" On My Radio Display. The Radio Will Not...

Had Lower Grill Replaced Afterwards Outside Temperture Reading Only Shows -40 Nothing Found In Owners Manual.

I Am Replacing Original Delphi Delco 10318438 Rds Cd/cassette/fm Stereo With Delphi Amp In Trunk With Pyle Pldn83bt.5 Stereo. Currently...

What Stereo Could I Replace With The Stock One?