So my 1988 C1500 Silverado interior is completely original and I'd like to keep it that way. The issue is the stereo has a mind of its own. Sometimes all the buttons work and other times very few of them work. Is there somewhere that I can send this stereo off and have it refurbished? Is there something I can try to do to make it more reliable? I'm not opposed to buying a different one but I'm mostly seeing units out of newer trucks, like 90-94. The stereo in my 88' Silverado looks a bit different. Is there a resource somewhere to know what OEM stereo's are compatible in my truck without modification?