GM Service Manual Online
For 1990-2009 cars only

Clutch Pedal Travels to Floor - Fluid in Master Cylinder for GMC Truck GMC P42 Commercial Chassis 1999

Problem

Action

DEFINITION: Pedal Travels to the floor. No pressure or very little resistance

Faulty master cylinder or actuator cylinder.

Replace the hydraulic clutch control assembly.

Burst or leaking hydraulic line.

Replace the hydraulic clutch control assembly.

No fluid in the reservoir.

Replace the hydraulic clutch control assembly.