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

Rattle or Knock Noise in Steering Pump for Buick Century 1999

Problem

Action

The vanes are sticking in the rotor slots.
  1. Clean and inspect the vanes. Refer to Power Steering Pump Disassembled View .
  2. Replace the power steering pump. Refer to Power Steering Pump Replacement .