Why does your 95 GMC vandura brakes hard?

Hard brakes in a 1995 GMC Vandura can be caused by several issues, including a failing brake booster, air in the brake lines, or a malfunctioning master cylinder. A faulty brake booster can prevent proper brake assist, making the pedal feel hard when pressed. Additionally, brake line issues or leaks can lead to reduced hydraulic pressure, affecting braking performance. It's advisable to have a thorough inspection to identify and resolve the specific problem.