Radio Volume Problem

On my 2000 Malibu, the radio volume only seems to come in at certain spots on the volume dial. It will sound fine, but when I adjust the volume dial only slightly, the reception goes out. I then have to crank my volume to get the sound to come back again. I checked my floor antenna connection and it seems fine. Could my problem be the radio dials? If so, how do I remove them? Also, could someone tell me how to check the antenna connections at the back of the radio and/or how to remove the radio? It is a stock AC Delco AM/FM radio. Thanks for any and all assistance!

You have the speed compensated volume (SCV) knob on the outside of the volume. Try turniing that up to MAX and see what happens.