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Home >> Chevrolet >> 2010 >> Cobalt LS, 4D Sedan, Automatic >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension General Diagnosis >> Diagnostic Information and Procedures >> Ball Joint Inspection >> Ball Joint Inspection

Ball Joint Inspection

    NOTE:
    • The vehicle must rest on a level surface.
    • The vehicle must be stable. Do not rock the vehicle on the floor stands.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Clean and inspect the ball joint seal for cuts or tears. If the ball joint seal is damaged, replace the lower control arm. Refer to Lower Control Arm Replacement .
  3. Support the lower control arm with a floor stand as far outboard as possible and raise the suspension to just below ride height.
    4. Fig 1: Measuring Vertical Lash In Ball Joint
    GM1855580Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not pry in such a way that the ball joint seal is contacted. Damage to the seal may result.
  4. Gently lift or pry the suspension to induce ball joint movement.
  5. If the J 8001:  Dial Indicator reading is more than 0.5 mm (0.020 in), replace the lower control arm. Refer to Lower Control Arm Replacement .
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