1999 Chevy Tahoe brakes light

If you have turn signals, and third brake light shines, try jiggling the emergency switch on top of the steering column while you apply brakes Listen for a click when you move the flasher switch lightly side to side. You might find that a short in your dimmer/multifunction switch is the problem. I put a small wedge along the e-switch and the brake lights worked. Though, six months later, I got a lot of "you got no brake lights". I now will replace the dimmer/multifunction switch to the tune of $197.00. I seen some auto stores (online) that sell the part for over $425.00. Shop carefully.