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Home >> GMC >> 1990 >> S15 Jimmy RWD, Automatic, 700R4/MD8 >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Suspension - Front (2WD)) >> Ball Joint Inspection >> Upper Ball Joint

Upper Ball Joint

WARNING: This page is about a different car, the 1990 GMC Safari and 1990 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support vehicle with jack stands under lower control arms, as close as possible to each lower ball joint. Ensure upper control arm bumper does not contact frame. Place dial indicator against lower part of wheel rim. Push in on bottom of tire while pulling outward at the top. Read dial indicator, then reverse push/pull procedure.
  2. Lateral (horizontal) deflection should not exceed .125" (3.18 mm). If deflection is excessive, replace ball joint.
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