so my brake light is on, constantly, my brakes arnt working like they useta
what could it be??? air in the line? i noticed i was a little low on fluid topped it off and still didnt work real good, i can stop but not like before...

 

The reason for the light is the proportioning valve has shut of either front or rear brakes. Check for blown wheel cylinders or a blown caliper. You should see brake fluid leaking. Or you have lost a shoe or a pad. My guess is a blown wheel cylinder though. After you fix it you will have to center the proportioning valve.

 

ok i might have lost a pad because my brakes were bad, but i didnt no they were that bad
my rear brakes btw =)

 

okay so i replaced the brakes, and i lost some fluid, but no leaks and the brakes still are not working right, im going to check the fluid,pump the brakes, etc see if i could get it working

 

Check for a fluid leak, especially on the ground where the fuel tank is. A high fail area for the brake line for Blazers in Northern states.

 

Okay it's a blown wheel cylinder it's leaking from behind the wheel can Someone explain his to change them please??

 

Well upon closer examintation it looks like it's comming from the line could it still be the wheel cylinder?? I don't have tools atm so I can't change the cylinder yet