I'll also check out bulbs tomorrow as well. I know I have extra new ones. In hindsight I suppose I should have done that when I was doing the brake switch swap out earlier today.

Looks like there is a fuse in that slot already

George
https://cimg4.ibsrv.net/gimg/blazerf...6c83d4b60e.jpg

Yeah and I just swapped that one out.

As well, pulled the lower dash panel and made sure the brake switch is plugged in correctly.

Will swap out bulbs tomorrow and see what happens then.

So all the fuses are intact?

If so then pull the TR CHMSL fuse (10A) and measure the DC voltage at each fuse socket separately while pressing the brake pedal with meter negative (black) cable to battery ground.

George