CTS 2003-2005

Steering Knuckle

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The steering knuckle is a machined aluminum casting. Do not use a hammer to loosen suspension components from the knuckle.

Removal & Installation



  1. Raise and support the vehicle.
  2.  
  3. Remove the tire and wheel.
  4.  
  5. Remove the wheel bearing/hub.
  6.  
  7. Remove the outer tie rod to steering knuckle retaining nut.
  8.  
  9. Use a steering puller and disconnect the tie rod from the steering knuckle.
  10.  
  11. Remove the lower stabilizer shaft link retaining nut.
  12.  
  13. Remove the stabilizer shaft link from the lower control arm.
  14.  
  15. Remove the upper control arm to steering knuckle pinch bolt.
  16.  
  17. Separate the upper control arm from steering knuckle .
  18.  
  19. Remove the lower ball joint retaining nut and discard.
  20.  
  21. Use a ball joint remover and disconnect the lower ball joint from the steering knuckle.
  22.  
  23. Remove the steering knuckle from the lower ball joint stud.
  24.  

To install:

  1. Install the steering knuckle to the lower ball joint stud.
  2.  
  3. Install a new lower ball joint retaining nut.
  4.  
  5. Tighten the nut in the following order: Tighten the nut to 15 ft. lbs. (20 Nm), tighten the nut to an additional 210 degree turn.
  6.  
  7. Install the upper control arm to steering knuckle.
  8.  
  9. Install the upper control arm to steering knuckle pinch bolt and nut.
  10.  
  11. Tighten the nut to 44 ft. lbs. (60 Nm).
  12.  
  13. Apply threadlocker 242 or equivalent to the threads of the stabilizer shaft link.
  14.  
  15. Connect the stabilizer shaft link to the lower control arm.
  16.  
  17. Install the stabilizer shaft link retaining nut and tighten to 37 ft. lbs. (50 Nm).
  18.  
  19. Connect the outer tie rod to the steering knuckle.
  20.  
  21. Install the outer tie rod retaining nut and tighten to 55 ft. lbs. (75 Nm).
  22.  
  23. Install the wheel bearing/hub.
  24.  
  25. Install the tire and wheel.
  26.  
  27. Lower the vehicle.
  28.  


WARNING
Special tools are recommended for removing both the front hub spindle, the tie rod end and the ball joint. Use only the recommended tools for separating the ball joint from the knuckle. Do NOT hammer or pry the ball joint from the knuckle. Remember that the steering knuckle is cast aluminum and can be damaged if care is not used. Failure to use the recommended tools or their functional equivalent may cause damage to the ball joint and seal.

  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. Remove the front hub and bearing assembly using the procedures found in this section.
  6.  
  7. Disconnect the lower ball joint using the procedures found in this section.
  8.  
  9. Remove the outer tie rod end using the procedures found in this section.
  10.  
  11. If the knuckle is to be reused, scribe a mark around the strut bracket to the knuckle. This will help align the strut at assembly.
  12.  
  13. Remove the bolts connecting the strut to the knuckle and remove the knuckle from the vehicle.
  14.  



Click image to see an enlarged view

Fig. Remove the cotter pin, then loosen the ball joint stud's slotted nut



Click image to see an enlarged view

Fig. Separating the ball joint from the steering knuckle using a special ball joint press tool



Click image to see an enlarged view

Fig. Use a suitable puller to separate the tie rod ends from the steering knuckle

To install:

  1. Install the knuckle to the vehicle. If the original knuckle is being reused, align the scribe marks made at removal to help get the strut-to-knuckle alignment as close as possible to the original location.
  2.  
  3. Install the strut-to-knuckle bolts and tighten to 90 ft. lbs. (123 Nm).
  4.  
  5. Install the outer tie rod end to the steering knuckle. Use a new torque prevailing nut and tighten to 22 ft. lbs. (30 Nm).
  6.  
  7. Connect the lower control arm ball joint stud to the knuckle, install the slotted nut and torque to 40 ft. lbs. (55 Nm). Align the slots in the nut to the hole in the ball joint stud by tightening the nut. DO NOT loosen the nut to align the holes for the cotter pin. Install a new cotter pin. The bent ends of the cotter pin MUST NOT face the ABS wheel speed sensor or the drive axle.
  8.  
  9. Install the front hub and bearing assembly using the procedures found in this section.
  10.  
  11. Install the front wheel and tire assemblies. Torque the wheel nuts to 100 ft. lbs. (140 Nm).
  12.  
  13. Lower the vehicle.
  14.  

 
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