brake light problem

ok need some help please, got a problem with the brake lights not working on my 94 k1500, blinkers work, running lights work but no Brakelights? I Dont know if it's the brake switch or what? I'm Confused, they dont even work on the cargo light! So any hints, if so i will be greatful

Start by checking the fuse to make sure it has not blown. It is more than likely that if it is not the fuse that your stop light switch has gone bad.