Bonneville, LeSabre, Park Avenue 2000-2005

Lower Control Arms


Removal & Installation

  1. Allow the control arms to hang free.
  3. Remove or disconnect the following:

    Front wheel
    Stabilizer shaft link assembly from the control arm
    Cotter pin from the lower ball joint and remove the nut
    Ball joint from the steering knuckle
    Lower control arm from the frame

    Click image to see an enlarged view

    Fig. Lower control arm assembly-except Park Avenue

    Click image to see an enlarged view

    Fig. Lower control arm mounting-Park Avenue



To install:

  1. Install or connect the following:
    Do not tighten the lower control arm nuts at this time. The weight of the vehicle must be supported by the control arms, since the vehicle design trim heights are obtained before tightening the lower control arm mounting nuts.

    Align the slot in the nut with the hole in the lower ball joint stud. Torque the ball joint nut up to one more flat. Never loosen the nut to align the slot.

    Lower control arm to the frame

    Ball joint stud to the steering knuckle. Torque the lower ball joint nut to 88 inch lbs. (10 Nm), then an additional 120 degree turn, during which a torque of 41 ft. lbs. (55 Nm) must be obtained.
    New cotter pin

    Control arm rear mounting bolts to 117 ft. lbs. (158 Nm), then the front mounting nut to 117 ft. lbs. (158 Nm)
    Stabilizer shaft link assembly. Torque the nuts to 13 ft. lbs. (17 Nm).
    Front wheel. Torque the lug nuts to 100 ft. lbs. (140 Nm).

  3. On models where applicable, torque the front lower control arm mounting nut to 140 ft. lbs. (190 Nm) and the rear lower control arm nut to 93 ft. lbs. (126 Nm).
  5. Check and adjust the wheel alignment.