Reply mainly for Dave. Check your air bag cones. Early cones were plastic and not up to the task at hand. They will fail, only question is when and
where. With my luck, it would be in an extremely isolated place without cell service. You should have Al cones. Scratch them with a nail and see if
the scratch is shiny. Shiny means metal, nothing to worry about. If still black, without metallic shine, replace as soon as possible.
Tom, MS II
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1975 GMC Avion
KA4CSG