1999 Chevrolet Silverado lighting problems

1999 chevrolet silverado which I purchased on 01-06-2001, with 25,587 miles on the odometer reading. Brake lights have quit working on 3 different occasions. Third light (cab stop light) works. Blinkers work,and back up lights work. All fuses are good. Replaced break light bulbs. First occasion, I was pulled over by the police advising me my brake lights were not working. The dealer(huffines chevrolet stated that a switch in the steering column had to be replaced.

The fuel gauge sending unit failed (I go by mileage to know if I need fuel or not). Driver's side seat belt locks up when you go to look to change lanes (dealer couldn't reproduce the problem--so it's never been fixed). Passenger seat belt locks up if you just lean forward to roll down the window (was told this was a mechanism for a baby seat--didn't think car seats were supposed to be in the front seat). Right side daytime running lamp burned out a long time ago.