A: Loosen the wheel lug nuts, raise the vehicle and support it securely on jackstands. Remove the wheel. On 4WD models, unscrew the driveaxle/hub nut with a socket and large breaker bar. Brace a large prybar across two of the wheel studs or insert a large screwdriver through the center of the brake caliper and into the disc cooling vanes to prevent the hub from turning as the nut is loosened. Remove the disc brake caliper and disc. If equipped, disconnect the electrical connector from the wheel speed sensor and remove the sensor. Disconnect the tie-rod from the steering knuckle. Remove the driveaxle/hub nut. Support the lower Control Arm with a floor jack. Separate the lower control arm from the steering knuckle. Separate the upper control arm from the steering knuckle. Remove the knuckle. Carefully inspect the steering knuckle for cracks, especially around the steering arm and spindle mounting area. Also inspect the balljoint stud holes. if they're elongated, or if you find any cracks in the knuckle, replace the steering knuckle. Installation is the reverse of removal. Tighten all suspension fasteners. Loosen the wheel lug nuts, raise the vehicle and support it securely on jackstands. Remove the wheel. Remove the hub bearing and axle shaft. Disconnect the tie-rod end or drag link from the steering knuckle. Remove the wheel speed sensor. Loosen the steering knuckle upper ballstud nut a few turns, but don't remove it. Remove the lower balljoint nut. Use a balljoint separation tool to detach the balljoint from the knuckle. Remove the upper balljoint nut. Separate the steering knuckle. Use a brass hammer to knock it loose if necessary. Installation is the reverse of removal. Tighten all suspension fasteners.