C 20 P/U 2WD V8-379 6.2L DSL (1985)
Brake Master Cylinder: Fundamentals and Basics
Master Cylinder / Brake Pedal Relationship
MASTER CYLINDER / BRAKE PEDAL RELATIONSHIP
WARNING: Master Cylinders can be easily misdiagnosed for problems related to excessive brake pedal travel.
Excessive brake pedal travel is often associated with a defective master-cylinder, however total pedal travel is affected by a wide variety of
components and issues.
Issues Affecting Pedal Travel
Brake Fluid