GM Service Manual Online
For 1990-2009 cars only

Growl Noise in Steering Pump for Pontiac Grand Prix 2000

Condition

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.

Replace the pressure plate. Refer to Power Steering Pump Replacement .

The thrust plate is scored.

Replace the thrust plate. Refer to Power Steering Pump Replacement .

The rotor is scored.

Replace the rotor. Refer to Power Steering Pump Replacement .

The pump ring is worn.

Replace the pump ring. Refer to Power Steering Pump Replacement .