REMOVAL & INSTALLATION
In order to perform this procedure, you will need a tool for forcing ball joint studs out of the control arms. It would also be helpful to have a tool that will permit you to press the tie rod end out of the steering knuckle. A special tool for seating the tie rod ends when installing them back into the knuckles, GM J-29193 or equivalent, will ensure proper seating.
- Raise the vehicle and support it securely under the frame. Do not support the lower control arm yet.
- Refer to Brakes and remove the brake caliper. Then, refer to the procedure for removing the brake disc in the sameand remove the disc and hub.
- Remove the three bolts attaching the water shield to the steering knuckle. Remove the shield and its gasket. Disconnect the tie rod ends from the steering knuckle as described later in the "Steering" section in this information.
- Pry the knuckle seal off the knuckle carefully in order to avoid damaging the knuckle sealing surfaces and discard the old seal.
- Remove the cotter pin and then loosen the ball joint stud retaining nut just a turn or two on both upper and lower ball joints. You want just enough clearance to break the ball joint studs loose in the control arms.
Use an appropriate special tool to press the upper and lower ball joint studs out of the control arms until the nuts bottom out against the arms.
- Securely support the lower control arm by the area directly under the spring. You can locate a floor jack directly under the control arm and raise it just until is contacts the control arm to do this. Then, remove the nuts from the ball studs.
- Remove the tie rod end cotter pin, nut and rod end using a tie rod puller tool J-6627-A. Refer to the "Steering" section in thisfor assistance.
- Raise the upper control arm for clearance and rock the knuckle outward so the ball stud clears the knuckle. Then, pull the knuckle upward and off the lower ball joint stud and remove it.
- Inspect the tapered holes in the steering knuckle, cleaning out dirt and checking for any out-of-roundness, cracking, deformation, or other damage. Replace the knuckle if there are any such indications or dangerous front end problems could result.
- Position the knuckle onto the lower ball joint stud and then raise the upper control arm, working the upper ball stud into the tapered hole in the top of the knuckle.
- Install the ball joint stud nuts, torque them, and install the cotter pins as described under "Ball Joint" removal and installation earlier in this information.