95 Bonny, brake troubles

I have a 95 bonneville with ABS. When I come to a stop and maintain brake pressure on the pedal, it slowly continues to travel down...as if a small leak somewhere. I put it in the garage and followed just about every inch of lines with no leaks and I have no fluid loss. Whatcha think??

Sounds like a master cylinder or air but I'll go wth the master cylinder,I would also check all the wheel cylinders and calibers w/the wheels off and drums off just to be sure,good luck.

I agree with auto, a sinking pedal with no external leaks or fluid loss is a bad master cylinder.

Had exact same problem on my 95 and it was the Master Cylinder.

Thanks for the advice. Replaced the master cylinder and all is well! Thanks once again! :)