Vacuum Booster Diagnosis - Hard Pedal. GMC Truck Savana 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Vacuum Booster Diagnosis - Hard Pedal

Checks

Action

Inspect for the following conditions:

•	Broken or damaged hydraulic pipes or hoses

•	A damaged or loose vacuum hose

•	A collapsed vacuum hose

Replace any faulty pipes or hoses.

Inspect for a plugged or loose vacuum fitting.

Clean and correctly tighten the vacuum fitting.

Inspect for the following conditions:

•	A faulty vacuum check valve or grommet

•	Faulty air valve seal or support plate

•	Damaged floating control valve

•	Bad stud welds on the front or rear housing or power head

•	Faulty booster diaphragm

•	Worn or distorted reaction plate or levers

•	Cracked or broken power pistons or retainer

Replace the vacuum booster. Refer to Power Vacuum Brake Booster Replacement .