How would you get air out of a brake line when the brakes have been bled and theres still no pressure on a 1995 Chevy Astro Van?
The only way to remove air from the brake system is to bleed the system. What do you mean, "there's still no pressure"?
If there's still no pressure, either you didn't bleed it correctly, or you have a bad master cylinder.
If you still don't have pressure, check all your lines for leaks. You will still have some pressure if you have air in the line, it just won't be firm pressure. The pedal will feel mushy.