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Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> External Pages >> Different car >> Section 372 (Front Suspension System) >> Repair Instructions >> Lower Control Arm Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the lower control arm.
  2. Install the control arm bolts and nuts. DO NOT tighten at this time.
    NOTE: Align the ball stud cotter pin hole parallel to the knuckle in order to ease the cotter pin installation.
  3. Install the ball stud to the knuckle.
  4. Install the ball stud castle nut.

    Tighten: 

    Tighten the ball stud castle nut to 20 N.m + 120 degrees (15 lb ft + 120 degrees) 

    Fig 1: Lower Control Arm Assembly
    G01720541Courtesy of GENERAL MOTORS CORP.
    NOTE: DO NOT loosen the ball stud nut in order to align the ball stud nut slots to the ball stud cotter pin hole.
  5. If necessary, tighten the ball stud castle nut in order to align the ball stud castle nut slot (1) to the ball stud cotter pin hole (2) as shown.
    Fig 2: Aligning The Ball Stud Castle Nut
    G01720542Courtesy of GENERAL MOTORS CORP.
    NOTE: Ensure that the cotter pin ends DO NOT contact the ABS wheel speed sensor, the ABS sensor connector or the drive axle.
  6. Install a NEW cotter pin and bend the ends as shown in either example.
    Fig 3: Bending Cotter Pin
    G01720543Courtesy of GENERAL MOTORS CORP.
  7. Install the stabilizer shaft link. Refer to Stabilizer Shaft Link Replacement .
  8. Install the ABS wheel speed sensor jumper harness to the harness retainer clips.
  9. Install the ABS wheel speed sensor connector (2).
    Fig 4: ABS Wheel Speed Sensor Connector
    G01720544Courtesy of GENERAL MOTORS CORP.
    NOTE: This is a prevailing torque type fastener. This fastener may be reused ONLY if:
    • The fastener and its counterpart are clean and free from rust.
    • The fastener develops 3 N.m (27 lb in) of torque against its counterpart prior to the fastener seating.

    If the fastener does not meet these criteria, REPLACE the fastener.

  10. Install the lower control arm nuts.

    Tighten: 

    Tighten the lower control arm nuts to 113 N.m (83 lb ft) 

  11. Install the tire and wheel.
  12. Lower the vehicle.