I bought the brake pressure switch and installed it. The problem was solved until I step on the brake pedal and shift gear from a park position.
Any suggestion? Thank you.
What happens? The brake idiot light comes when you push on the brakes and put it in park? I don't know if it ECM related, but did you try to reset it by disconnect the battery?
That means, it's time to switch to vacuum how's the motor? probably running if you havent experience stiff pedal. hmmm...crap I'm out of ideas. Do GM car's brake light come on if one of the tail lamp bulbs get shot? generalizing TRs. I remember you posting that it used to make a buzzing sound at one time or another. or, it might not be you. crap. I wish I paid attention.
I had a simlar situation, where it started to make a buzzing sound, and continuosly blew the fuse if I was on the brakes profusely...giving me the hard pedal. sometimes, it would go on right when I started the car, and I'd have to wait till the motor cycled and the light would go off. then, it finally crapped out on me...I believe the motor got shot, I never really looked into it. So that's when I converted.