GMC Jimmy Right Speakers Not working

I just bought this 1995 GMC Jimmy and for some reason the speakers on the left are not working at all. is there a commmon problem or easy fix for this??

I don't know if there is a common problem or not. What I can suggest is taking a known good speaker and hooking it up to the bad side. More than likely you have a blown channel(s) on your radio and would have to replace the radio. If the components are aftermarkets, then I would check to see if the speaker wires are hooked up correctly behind the radio. Or shorted or cut wires somewhere. If there is an factory or aftermarket amp installed in the truck, it could be that and not the radio.