Rear Upper

Rear Axle Upper Control Arm Replacement

- Tools Required
- J 42188 Ball Joint Separator

Removal Procedure





1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the tire and wheel assembly.
3. Disconnect the wheel speed sensor electrical connector.





4. Disconnect the real time damping (RTD) position sensor link, if equipped.





5. Separate the suspension knuckle (1) from the upper control arm using J 42188.
6. Support the lower control arm with a jack stand.
7. Loosen the upper ball joint stud nut, but do not remove the nut.
8. Remove J 42188 and the ball joint stud nut (2) from the ball joint stud.





9. Remove the bolts (1) and (2) retaining the upper control arm (3) to the frame.
10. Remove the upper control arm (3) from the vehicle.

Installation Procedure





1. Install the upper control arm (3) to the vehicle.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the upper control arm mounting bolts (1) and (2) to the frame.
- Tighten the upper control arm mounting bolts to 110 Nm (81 ft. lbs.).





3. Install the suspension knuckle upper ball joint stud into the upper control arm.
It may be necessary to use an alien wrench to keep the ball joint stud from spinning while tightening the ball joint stud nut.
4. Install the upper ball joint stud nut.
4.1. Tighten the suspension knuckle ball joint stud nut to 20 Nm (15 ft. lbs.) to seat the ball joint stud.
4.2. Turn the ball joint stud nut an additional 250 degrees.
4.3. Check the ball joint nut for a minimum final torque of 55 Nm (41 ft. lbs.).





5. Connect the wheel speed sensor electrical connector.





6. Install the shock absorber solenoid electrical connector, if equipped.





7. Connect the real time damping position sensor link, if equipped.
8. Remove the jack stand from the lower control arm.
9. Install the tire and wheel assembly.
10. Lower the vehicle.
11. Perform a rear wheel alignment.