CTS 2006-2007, CTS-V 2005-2007, DTS 2006-2007

Coil Springs

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Removal & Installation



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

    Front wheel
     
    Upper control arm-to-steering knuckle pinch bolt
     
    Upper ball joint from steering knuckle
     
    Lower shock mounting bolts
     
    A/C line bracket from shock tower and position aside
     
    Upper shock mounting bolts
     
    Shock module assembly
     

  4.  
  5. Install the shock assembly into a spring compressor.
  6.  
  7. Matchmark the locations of the upper control arm bracket and insulator to the coil spring.
  8.  
  9. Compress the coil spring and remove the shock absorber upper retaining nut.
  10.  
  11. Remove the shock absorber from the coil spring assembly.
  12.  
  13. Remove the upper control arm bracket assembly, insulator and coil spring from the spring compressor.
  14.  

To install:

  1. Install the coil spring, insulator, upper control arm bracket assembly, and shock absorber to the spring compressor aligning all marks made during disassembly.
  2.  
  3. Compress the coil spring and install the shock absorber retaining nut. Tighten to 18 ft. lbs. (25 Nm).
  4.  
  5. Remove the coil spring compressor from the shock module assembly.
  6.  
  7. Install or connect the following:

    Shock module assembly into the vehicle. Tighten the upper mounting bolts to 83 ft. lbs. (112 Nm).
     
    A/C line bracket. Tighten to 80 inch lbs. (9 Nm).
     
    Lower shock mounting bolts. Tighten to 18 ft. lbs. (25 Nm).
     
    Upper ball joint to the steering knuckle
     
    Upper control arm-to-steering knuckle pinch bolt. Tighten to 44 ft. lbs. (60 Nm).
     
    Front wheel
     

  8.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the strut from the vehicle.
  4.  
  5. Install the strut in the J 45400 strut spring compressor.
  6.  
  7. Turn the spring compressor forcing screw (1) until the coil spring (2) is compressed.

    Click image to see an enlarged view

    Fig. Strut and strut spring compressor J 45400

  8.  
  9. Use a 45 TORX® socket to hold the strut shaft. Use the J-35669 socket to remove the upper strut mount nut.

    Click image to see an enlarged view

    Fig. Upper strut mount nut removal

  10.  
  11. Remove the strut from the strut spring compressor.
  12.  
  13. Loosen the compressor forcing screw (1) until the upper strut mount and coil spring (2) may be removed.
  14.  
  15. Remove the upper strut mount and the coil spring from the strut spring compressor.
  16.  

To install:

  1. Install the coil spring and upper strut mount to the J 45400 strut spring compressor.
  2.  
  3. Turn the spring compressor forcing screw until the coil spring is compressed.
  4.  
  5. Install the strut to the coil spring and upper strut mount.
  6.  
  7. Loosely install the strut retaining nut.
  8.  
  9. Use a 45 TORX® socket to hold the strut shaft. Use the J-35669 socket to install the upper strut mount nut. Tighten the strut mount nut to 63 ft. lbs. (85 Nm)
  10.  
  11. Remove the strut from the J 45400.
  12.  
  13. Install the strut to the vehicle.
  14.  

 
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