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I've owned three Suburbans since 1993: 1984 (diesel), 1990 and 2002. I thought about my battle with the radio speakers in the 2002 after reading Tom C.'s post on the subject.
It started the day I bought the 2002 used in 2007. The RF main speaker had an open coil. Since then I have replaced all four of the speakers in the doors, all due to the same problem: open voice coils. I took a couple of then apart. It looks like the person winding the voice coil put a serious bend in the wire just as it comes off the coil form. After many vibrations back and forth, the wire fatigues and breaks. I have also replaced the foam surrounds. There is a company that makes replacements in FL and they are quire easy to replace. I even replaced the surround on the big sub-woofer in the very rear of the vehicle. Try finding a 2 ohm speaker that big!
I have finally started to replace the inferior GM speakers with some from Crutchfield. They are still going strong.
We'll leave the diesel for another post. It's a story unto itself.
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