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Home >> GMC >> 1980 >> Rally G3500, Van Cargo >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Power Brake Units - BENDIX HYDROBOOST >> Hydro-Boost Diagnosis >> Condition >> Brake Pedal Pulls Down Slightly On Engine Start

Brake Pedal Pulls Down Slightly On Engine Start

POSSIBLE CAUSE CORRECTION
1) Restriction in gear or booster return lines. 1) Replace lines or reposition to eliminate restriction.