2000 Chevy Monte Carlo No sound from stereo

Electrical problem
2000 Chevy Monte Carlo 6 cyl Front Wheel Drive Automatic

Hey guys, quick question about my car stereo. The radio works fine as far as functions. Radio, cd player, all of the skip buttons, and the car controls as far as tire pressure monitors, FOB functions and all work fine. The sound will come and go with no predictible pattern. It sounds normal at times, won't have any sound for most of the time, and is fuzzy like a radio station is going out of range at other times. I'm wondering what the possible cause could be. Any info you guys had would help a ton. Thanks.