Brake Light On problems of the 2007 Chevrolet Trailblazer

Right brake light continues to go out and the connector is burned and corroded. Also, I am continuously replacing my headlights and brake lights. Once replacing, the light works for about 3-4 weeks. It appears there is a problem with the brake light connector circuit board. Please help!.

I leased a 2007 chevy Trailblazer on may 31st 2007 at wally edgar dealership. When the weather started turning below 50degrees the brakes started to fail. We took it into wally edgar dealership in January 2008. All they did was bleed the brakes. Within 2 months the brakes were back to failing. I took it in to lunghumer dealership in April 2008, this time they replaced the master cylinder. That worked for awhile. . Well within a month I was back at wally edgar dropping it off because the brake pedal had exceeded the last two times it was within 1/2 inch of the floor. This time they bleed the brakes and claimed the problem was an air bubble in a caliper. Well everything was going okay until the first real cold of the year. My brakes were down to the floor literally. I was unsure if they were going to stop me. This time they did their job at wally edgar and replaced a modular sensor. The brakes seemed to be working good. That was January 14, 2009. Within a week the 4wd service light came on. The transfercase switch was replaced. January 22, 2009. Then on January 30th my service brake light and stabilitrak light came on. Since they couldn't figure out what was wrong they decided to replace the calipers, master cylinder, and electric brake module. And I am suppose to feel safe in this heap of junk.