My 98 Z-71 has this annoying sound like washers on a bolt everytime I go over the railroad tracks or any bump of substance. Last weekend while changing the oil, I started looking at my suspension at the rear passenger side since that seems to be where the sound is coming from. I noticed that the front shackle for the leaf spring was slightly loose causing it to make that sound. None of the other shackles seem to be loose at all. Is there anything I can do to eliminate this sound and is this a problem that needs immediate attention. It has been going on for quite some time now and I wasn't ever sure of what it was until last weekend. Is this common in my vehicle? My dad has same year and make of truck and said he has that sound too, but always thought it was his running boards. I don't have running boards. I checked his truck afterwards and his all seem tight and do not appear to be loose at all. Perhaps his sound IS his running boards. Thanks in advance for any answers anyone may provide.
Dave