If your brakes lights are not working and all of your other lights are OK try replacing your "brake stop switch". You may have to have either your local auto shop or local dealer replace the switch because it's hard to do yourself. I had the same problem on my Tahoe and replacing the brake stop switch solved it right away.
Yes they indeed have brake lights...
No cruise control or fender mounted brake lights on a 2002 Tahoe could mean a short in the wiring or the ground wire has failed. No cruise control is also a result of a bad oxygen sensor. Most GM made vehicles have two oxygen sensors.
A 2002 Chevy Tahoe uses the standard brake fluid in passenger vehicles with power brakes. It is known as DOT3 brake fluid.
BEHIND THE BRAKE PEDAL
The fuse for the dash lights on a 2002 Chevy Tahoe is in the fuse box in the interior of the vehicle. There is also a fuse for this in the engine compartment on top of the battery. This fuse is for the speedometer and odometer lights.
the brake switch at the pedal is stuck or out of adjustment.
check the brake light switch
brake switch
If the fuses and bulbs are okay I would blame the signal switch assembly. They call it a multi-function switch these days.
I have a 97 Tahoe and the brake lights were not working and the problem was in the emergency flasher switch. I just jiggled it and the brake lights worked so am thinking you might have the same problem. It could also be the brake pedal switch located right on the pedal arm.
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
Check the bulbs they are double filamented with smaller being for brake lights