2000 silverado brake light issue

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Recently my truck has been throwing the brake light on occasionally. Sometimes it will be on, other times it won't come on at all. It seems completely random. I'll go start the truck and the light will come on and stay on or it won't come on at all. It is the emergency brake light not the ABS light, however my abs light has been on for a while now due to a bad wire. I've looked all over the internet and cannot seem to find an answer. Its still pretty cold and snowy where i am so i have yet to jump into it. The reservoir is full of brake fluid and my brakes feel normal. I replaced my pads rotors and rear calipers about a year ago.

Thanks for the help!