GM Service Manual Online
For 1990-2009 cars only

Condition

Causes

Growl Noise in Steering Pump

    • The hoses have excessive back pressure caused by restriction.
    • The steering gear has excessive back pressure caused by restriction.
    • The pressure plates are scored.
    • The thrust plate is scored.
    • The rotor is scored.
    • A hose is grounding out.
    • A line is grounding out.
    • The cam ring is worn.
    • The fluid level is low.