Speaker problems on a '98
 

Hi, i just bought a used '98 3800 GP with the premium CD Player installed in the car. When i play the radio it works fine except for that the front left speaker vibrates as if it was loose. When i play a Cd however, the whole entire left side does not work, so all the sound comes out the right side. Is this a problem with the contacts on the back of the radio or the speakers? Any help would be appreciated.
Thanks,
Justin