Inspect the
Control Arm balljoints for looseness whenever either is separated from the
Steering Knuckle by attempting to turn the ballstud in its socket with your fingers; if it is loose or can be turned, replace the balljoint. To check the upper balljoint and tension strut balljoint, loosen the front wheel lug nuts, raise the front of the vehicle securely on jackstands, and remove the wheel. Then, raise the lower control arm with a floor jack to simulate normal ride height. Use a large prybar inserted between the upper control arm or tension strut and the steering knuckle to pry the upper control arm or tension strut away from the knuckle, noting that up to 0.059-inch movement is allowed, which can be checked with a dial indicator. If accurate measurement is not possible, have the balljoint checked at an automotive repair shop. If replacement is necessary, replace the upper control arm or tension strut, as the balljoint cannot be replaced separately. For the lower balljoint, raise the vehicle and support it securely on jackstands, then place a floor jack under the lower control arm near the outer end and raise it until it supports the vehicle's weight. Insert the prybar against the lower control arm or tension strut and pry the steering knuckle up to check for wear, again noting that up to 0.059-inch movement is allowed. If replacement is indicated, remove the steering knuckle or tension strut, as the balljoint is press fit in the steering knuckle and tension strut, requiring a special press tool and receiver cup for removal and installation. These tools can often be rented from equipment rental yards or auto parts stores, or the vehicle can be taken to an automotive machine shop or qualified repair facility for balljoint replacement.