1998 Pontiac Grand Am

Brakes problem
1998 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 120000 miles

the rear brakes seem to be working but the front brakes do not.
I have inspected the front brakes and all seems fine. Nothing is siezed up the pads are good and I can bleed the brakes just fine.
Is there A sensor that would cause this?
September 10, 2009.

If you are getting pressure to the caliper when bleeding, then I would have to say the caliper piston is frozen. Check that first. Also, if that is good, you may have a problem with the master cylender or proportioning valve.