GM Service Manual Online
For 1990-2009 cars only
  1. Visually inspect all suspension components and wheels carefully for the following damage:
  2. • Check for cracks in component attachment areas
    • Check for corrosion
    • Check for large chips in casting surfaces
    • Check for large gouges in casting surfaces
  3. Visually inspect the suspension components for wear.
  4. Visually inspect the wheels for wear.
  5. Visually inspect suspension components for galvanic corrosion.
  6. Visually inspect fasteners for galvanic corrosion.
  7. Galvanic corrosion develops due to the use of the following dissimilar metals:

    • Forged aluminum
    • Cast aluminum
    • Steel
  8. Replace suspension components with new parts if the following is present:
  9. • Visually inspect for bent suspension components
    • Damaged suspension components
    • Worn suspension components
  10. If bent, damaged and/or worn suspension components or bent, damaged and/or worn wheels are present, carefully inspect the ball joint attachment to the knuckle boss for looseness or damage. Refer to Ball Stud and Knuckle Inspection .
  11. Do not heat, quench, straighten or weld aluminum suspension components.