Have just put new brakes and master cylinder on 94 Astro. Bled the brakes and still have no pedal. Replaced master cylinder again to have same results.

Reason for the change: Went over a set of tracks and ABS light flickered then pedal dropped and has not came back up yet.

Any ideas?

Could the ABS pump cause this?

Do you have hydro-boost style brakes?

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