GrandPrix, Impala 2006-2008, Monte Carlo 2006-2007

Lower Control Arms

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Bushing Replacement



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Front wheel
     
    Lower control arm
     

  4.  
  5. Mark the lower control arm along the flat edge of the bushing flange.
  6.  
  7. Coat the threads of tool J 21474-27 with a high pressure lubricant.

    Click image to see an enlarged view

    Fig. Removing the control arm bushing

  8.  
  9. Assemble the following bushing removal tools as illustrated:

    J 21474-27
     
    J 21474-13
     
    J 34126
     
    J 35379
     
    J21474-2
     
    J 21474-4
     

  10.  
  11. Tighten J 21474-4 to remove the bushing.
  12.  

To install:

Click image to see an enlarged view

Fig. Positioning the control arm bushing



Click image to see an enlarged view

Fig. Installing the control arm bushing


NOTE
You MUST install the lower control arm vertical bushing in the same position in order to maintain the original vehicle ride, handling, and road feel.

  1. Align the flat edge of the bushing flange to the mark in the control arm (1). Ensure that the flat edge of the bushing flange is 30 degrees (2) from the centerline of the lower control arm. Ensure that the thin slot in the bushing is facing outboard. Insert the bushing into the control arm. Refer to the accompanying illustration for clarification of positions (1) and (2).
  2.  
  3. Coat the threads of tool J 21474-27 with a high pressure lubricant.
  4.  
  5. Assemble the following bushing installation tools as illustrated:

    J 21474-27
     
    J 21474-13
     
    J 21474-5
     
    J 21474-4
     

  6.  
  7. Tighten J 21474-4 to remove the bushing.
  8.  
  9. Install the lower control arm.

    Front wheel
     

  10.  

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Front wheel
     
    Antilock Brake System (ABS) wheel speed sensor connector and jumper harness from the retainer
     
    Stabilizer shaft link
     
    Cotter pin from the ball stud and loosen the nut
     

  4.  
  5. Install a ball joint removal tool over the ball joint and lower control arm. Rotate the ball stud nut counterclockwise to separate the ball stud from the steering knuckle.
  6.  
  7. Remove the lower control arm.
  8.  

To install:

  1. Install the lower control arm and bolts. Do not tighten the nuts at this time.
    NOTE
    Align the ball stud cotter pin hole parallel to the knuckle to ease the cotter pin installation.

  2.  
  3. Install the ball stud to the steering knuckle. Tighten to 22 ft. lbs. (30 Nm) plus an additional 120 degrees.
  4.  
  5. Install or connect the following:

    New cotter pin and bend the ends. Make certain the ends do not make contact with the ABS wheel speed sensor
     
    Stabilizer shaft link
     
    ABS wheel speed sensor wire harness to the retainer clips
     
    ABS wheel speed sensor connector
     

  6.  
  7. Install the lower control arm nuts and torque them to 83 ft. lbs. (113 Nm) on all models except Lumina. On Lumina models tighten the control arm-to-frame nuts to 52 ft. lbs. (70 Nm).

    Front wheel
     

  8.  

 
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