@jrsavoie out here in the dry prairie we dont seem to have a lick of trouble with the clearance lights, in fact IDK if I have ever changed one. We did get a hail storm back in september that may have cracked a couple, so I plan on getting a few.
Someone is selling genuine GM lenses on ebay for around 40 bucks for a set of 5.
As far as getting rid of the 194 bulbs and going with LEDs, If
@Don Rupanovic does not reply,
@88gmctruck has a few sets in the classifieds if you want OE grade goodness.
With both Don and 88gmc, I am still super curious how in the heck one gets ahold of that many bulbs.
Good luck!