Upper & Lower Ball Joints ("K" Series Blazer & Pickup, Sierra, Suburban & Yukon)
- Raise and support vehicle using jackstand under lower control arm, near lower ball joint. Place a dial indicator on spindle hub.
- Pry tire and wheel assembly between lower control arm and outer race to measure vertical movement. Note dial indicator reading. If reading exceeds .08" (2.0 mm), replace loose ball joint.