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Home › Cadillac › 2009 › XLR Base › Repair and Diagnosis › Suspension › Front Suspension › Front Suspension System › Repair Instructions › Lower Control Arm Replacement › Installation Procedure

Installation Procedure

    Fig 1: View Of Lower Control Arm, Crossmember & Parts
    GM922461Courtesy of GENERAL MOTORS CORP.
  1. Install the lower control arm to the vehicle.
  2. Install the cam bolts, washers, and nuts retaining control arm to the crossmember.
    1. Place the cam bolts at the position marked during disassembly.
    2. Due to a required wheel alignment, tighten the cam bolts but do not set to final torque specifications at this time.
  3. Support the lower control arm with a jackstand.
    4. Fig 2: View Of Ball Joint Stud & Nut
    GM922462Courtesy of GENERAL MOTORS CORP.
  4. Install the lower ball joint stud to the steering knuckle.
    5. CAUTION: Refer to Fastener Caution .
  5. Install the lower control arm ball joint stud nut.

    It may be necessary to use an Allen wrench to keep the ball joint stud from spinning while tightening the ball joint stud nut. Tighten the lower control arm ball joint stud nut to 30 N.m (20 lb ft) plus 180 degrees.

    6. Fig 3: View Of Stabilizer Shaft Link & Lower Control Arm
    GM172678Courtesy of GENERAL MOTORS CORP.
  6. Install the stabilizer shaft link to the lower control arm and tighten to 72 N.m (53 lb ft).
    7. Fig 4: Compressing Transverse Spring
    GM65337Courtesy of GENERAL MOTORS CORP.
  7. Install the front transverse spring. Refer to Front Transverse Spring Replacement .
  8. Install the front transverse spring. Refer to Front Transverse Spring Replacement .
    9. Fig 5: View Of Shock Absorber Lower Mounting Bolts & Nuts
    GM906229Courtesy of GENERAL MOTORS CORP.
  9. Connect the shock absorber to the lower control arm and tighten to 28 N.m (21 lb ft).
    10. Fig 6: View Of Wheel Speed Sensor Electrical Connector
    GM919156Courtesy of GENERAL MOTORS CORP.
  10. Connect the wheel speed sensor harness connector.
  11. Remove the jack stands.
  12. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  13. Lower the vehicle.
  14. Perform a front wheel alignment. Tighten the lower control arm cam bolt nuts to 170 N.m (125 lb ft). Refer to Wheel Alignment Measurement .
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