GM Service Manual Online
For 1990-2009 cars only

Lower Control Arm Ball Joint Replacement Torsion Bar Suspension - 1999

Removal Procedure

  1. Raiseand support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the lower control arm. Refer to Lower Control Arm Replacement .
  4. Place the lower control arm in a bench vice.
  5. Using a chisel, remove the 4 securing crimps from the ball joint body (15 series only).
  6. Using a press, remove the ball joint from the lower control arm.

Installation Procedure

    Important: Use the outer flange of the ball joint in order to press the ball joint into place.

  1. Install the new ball joint using a press.
  2. Place the lower control arm in a bench vice.
  3. Using a punch, install 4 crimps to the ball joint. Use the replaced ball joint as a reference (15 series only).
  4. Install the lower control arm. Refer to Lower Control Arm Replacement .
  5. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Remove the safety stands.
  7. Lower the vehicle.
  8. Verify the wheel alignment. Refer to Wheel Alignment Specifications in Wheel Alignment.

Lower Control Arm Ball Joint Replacement Coil Spring Suspension - 1999

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the front coil spring. Refer to Front Coil Springs Replacement .
  4. Remove the lower control arm. Refer to Lower Control Arm Replacement .
  5. Secure the lower control arm in a bench vice or equivalent.
  6. Center punch the rivet heads.
  7. Drill out the rivets.

Installation Procedure

  1. Install the ball joint to the lower control arm.
  2. Install the replacement bolts to the lower control arm.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the nuts to the bolts.
  5. Tighten
    Tighten the nuts to 70 N·m (52 lb ft).

  6. Remove the lower control arm from the bench vice.
  7. Install the lower control arm. Refer to Lower Control Arm Replacement .
  8. Install the coil spring. Refer to Front Coil Springs Replacement .
  9. Install the tire and wheel tire assembly. Refer to Tire and Wheel Removal and Installation .
  10. Remove the safety stands.
  11. Lower the vehicle.
  12. Verify the wheel alignment. Refer to Wheel Alignment Specifications in Wheel Alignment.