Brakes on 1999 Cadillac DeVille

Replaced front and rear brake pads and rotors. Now it seems to have air in lines. When I push on the brake pedal it seems to have no pressure on it until it gets about half way to floor. Not sure what's going on.

2 answers 1 comment
You may have air in the brake system, if so you'll need to bleed the brakes.
Have bleed the brakes 3 times and no change
USE A VACUUM PUMP TO BLEED BRAKES.