Cadillac 15939599 Front Lower Control Arm Assembly

Take off the wheel lug nuts, raise your car by its front end, and firmly support it using jackstands. Set the parking brake, and block the rear wheels so the car won't move. First, take off the wheel. Then unlatch the steering knuckle balljoint stud nut. To separate the balljoint from the knuckle, use a special tool called a balljoint separator between the control arm and steering knuckle. If not available, hitting the steering knuckle boss with a hammer will do the job, but beware it can damage the balljoint boot. Pull the road sensing suspension position sensor off when available from the control arm. Take all fasteners off that connect the control arm to the frame, then detach the control arm. Check the control arm bushings for hardness changes, wearing out, and cracks. Go to a dealer service department or suspension repair shop if the bushings are broken down. Set the control arm in the suspension support and put the fasteners in place without making them tight yet. Push the balljoint tip into the steering knuckle hole, add the nut, tighten it according to specifications, and adjust symmetry between the pinhole and nut opening before putting in a fresh pin. When it has the road sensing suspension, plug in the position sensor to the control arm. First, use a floor jack to lift the outer end of the control arm until it reaches regular riding height, and then bolt it in place according to the correct torque ratings. Put the wheel in place, let the vehicle go down, and tighten all wheel bolts according to manufacturer guidelines.