This 2000 Silverado came in with a complaint of the turn signals cutting out, mostly when sitting at a red light with the turn signal on. The circuits to the turn signal flasher tested out ok, and it seemed to be a flasher problem. After I politely beat the #$%& out of the flasher, it would start working for a couple of clicks. A new flasher solved the problem. This should apply to all of the Silverados from the 99-02 era but don't quote me on that.
Replacement flasher:
https://www.amazon.com/gp/product/B00...
As of right now, 3/7/2017, the tools for the 15000 subscriber special are still up for grabs! If you came for the spider clue, todays clue is - the video that the spider is in involves electrical testing.