CTS 2003-2005

Transmission Removal & Installation

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  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the shift linkage from the transmission.
  4.  
  5. Place the transmission in neutral by rotating the shift shaft clockwise 2 clicks.
  6.  
  7. Remove or disconnect the following:
    NOTE
    Matchmark the torque converter to flywheel orientation to ensure proper realignment.



    Exhaust system
     
    Driveshaft and secure to the shift control level with mechanics wire or equivalent
     
    Catalytic converter hanger bracket
     
    Transmission wiring harness and harness clips
     
    Transmission close out plug
     



    Torque converter bolt close out plug
     
    Front air deflector
     
    Torque converter bolts
     
    Transmission cooler pipes
     

  8.  
  9. Support the transmission with a suitable transmission jack.
  10.  
  11. Remove the transmission mount.
  12.  
  13. Remove the 3 lower transmission mounting bolts.
  14.  
  15. Lower the rear of the transmission enough to gain access to the upper mounting bolts.
  16.  
  17. Disconnect the engine wiring harness clips from the transmission mounting bolts.
  18.  
  19. Remove the 3 upper transmission mounting bolts.
  20.  
  21. Slide the transmission free from the engine dowels and lower the transmission from the vehicle.
  22.  

To install:

  1. Raise the transmission into the vehicle and align the transmission on the engine dowels.
  2.  
  3. Install the 3 lower transmission mounting bolts. Tighten as follows:
    1. Transmission bolts (2) to 55 ft. lbs. (75 Nm)
    2.  
    3. Transmission bolts (1) to 37 ft. lbs. (50 Nm)

      Click image to see an enlarged view

      Fig. Location of automatic transmission lower mounting bolts.



      Click image to see an enlarged view

      Fig. Location of automatic transmission upper mounting bolts.

    4.  

  4.  
  5. Install the 3 upper transmission mounting bolts to 55 ft. lbs. (75 Nm).
  6.  
  7. Install or connect the following:

    Engine wiring harness clips to the transmission mounting bolts
     
    Transmission mount. Tighten the mounting bolts to 44 ft. lbs. (60 Nm).
     
    Transmission cooler pipes
     
    Torque converter bolts. Tighten to 46 ft. lbs. (63 Nm).
     
    Torque converter bolt plug
     
    Transmission close out plug
     
    Front air deflector
     
    Transmission wiring harness clips and wiring harnesses
     
    Catalytic converter hanger bracket
     
    Driveshaft. Tighten the shaft coupler-to-transmission flange bolts to 63 ft. lbs. (85 Nm).
     

  8.  
  9. Place the transmission in park by rotating the shift shaft fully counter clockwise.
  10.  
  11. Connect the shift linkage to the transmission. Tighten the shift shaft nut to 11 ft. lbs. (15 Nm).
  12.  
  13. Install the exhaust system.
  14.  
  15. Check the transmission fluid level.
  16.  
  17. Start the engine and check for leaks.
  18.  
  19. Road test the vehicle for proper operation.
  20.  

 
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