GM Service Manual Online
For 1990-2009 cars only

Condition

Causes

Low pressure due to the steering pump

    • A seized or inoperative flow control valve
    • A worn pressure plate
    • A worn thrust plate
    • An improperly installed pressure plate
    • An improperly installed thrust plate
    • A cracked thrust plate
    • A cracked pressure plate
    • A broken thrust plate
    • A broken pressure plate
    • A worn cam ring
    • A worn rotor
    • Worn vanes
    • Vanes sticking in the rotor slots
    • High internal pump leakage