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Home >> GMC >> 1990 >> Forward Control 6.2 J, Automatic, 475/M40 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> DISC & DRUM (C, G, K, P, R & V Series) >> Adjustments >> Hydro-Boost >> Brake Pedal

Brake Pedal

  1. Make adjustment in linkage until pedal travel is correct. Pedal travel is the distance pedal moves toward floor from a fully released position.
  2. Pump pedal a minimum of 3 times with engine off before making measurement. Pedal travel should be 6" on all 4-wheel disc brake models, and 3 1/2" on all other models.