GM Service Manual Online
For 1990-2009 cars only

Hissing Noise

    • Under normal conditions some noise may be heard during stationary maneuvering.
    • Inspect for hydraulic leak.
    • Inspect for air in power steering system.

Momentary High Effort When Turning Wheel Quickly

    • Inspect for internal pressure leak.
    • Inspect for Insufficient pump pressure.
    • Inspect for low fluid level.