Plastic visor-to-headliner clips (all GM?)

I know I have seen comments on this forum about broken visor clips, but does anyone know where I can get replacements? Is it a dealer item? I now have two cracked clips and can't find replacements...

It's for a 1998 Lumina LTZ beige interior

Thanks,
Mark

did you ever think of going to a wrecking yard and getting them there?