GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century 🢒 Steering 🢒 Power Steering System 🢒 Growl Noise in Steering Pump

Growl Noise in Steering Pump for Buick Century 1999

Problem

Action

There is excessive back pressure in the power steering hoses.
  1. Inspect the power steering hoses for restrictions. Refer to Power Steering System Test .
  2. Replace the power steering hoses as needed. Refer to Power Steering Pressure Pipe/Hose Replacement or Power Steering Return Hose Replacement .

There is excessive back pressure in the power steering gear.
  1. Inspect the power steering gear for restrictions. Refer to Power Steering System Test .
  2. Replace the power steering gear. Refer to Steering Gear Replacement .

The pressure plate is scored.
  1. Inspect the pressure plate for scores.
  2. Replace the power steering pump.Refer to Power Steering Pump Replacement .

The thrust plate is scored.
  1. Inspect the thrust plate for scores.
  2. Replace the power steering pump. Refer to Power Steering Pump Replacement .

The rotor is scored.
  1. Inspect the rotor for scores.
  2. Replace the power steering pump.Refer to Power Steering Pump Replacement .

The pump ring is worn.
  1. Inspect the pump ring.
  2. Replace the power steering pump.Refer to Power Steering Pump Replacement .