why is the brake pedal hard on 1997 Chevrolet 1500 Pickup

when i push the pedal after first starting its hard and weven when its driving the pedal still remains hard

by in Frost, TX on November 01, 2012
3 answers
ANSWER by on November 02, 2012
VACUUM PROBLEM (INCLU. CHECK VALVE) TO BRK. BOOSTER OR DEFECTIVE BOOSTER.
ANSWER by on November 02, 2012
agree with wetry
ANSWER by on November 04, 2012
bad brake booster