GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 42640 Steering Column Anti-Rotation Pin

Removal Procedure


    Object Number: 333146  Size: SH

    Caution: The front wheels of the vehicle must be maintained in the straight ahead position and the steering column must be in the LOCK position before disconnecting the steering column or intermediate shaft. Failure to follow these procedures will cause improper alignment of some components during installation and result in damage to the SIR coil assembly.

  1. Turn the steering wheel so that the front wheels are pointing straight ahead.
  2. Turn the ignition lock cylinder to the lock position and remove the key.
  3. Lock the steering column through the access hole in the lower steering column trim cover using J 42640 .
  4. Remove the transmission control lever knob. Refer to Transmission Control Lever Knob Replacement.
  5. Remove the manual transmission control mount plate assembly. Refer to Transmission Control Mount Plate Replacement.
  6. Remove the exhaust system. Refer to Exhaust System Replacement.
  7. Remove the catalytic converters. Refer to Catalytic Converter Replacement - Left Side and Catalytic Converter Replacement - Right Side.
  8. Remove the propeller shaft. Refer to Rear Propeller Shaft Replacement.

  9. Object Number: 1979751  Size: SH
  10. Disconnect the electrical connector (5) from the vehicle speed sensor.
  11. Disconnect the electrical connector (4) from the backup lamp switch.
  12. Remove the electrical harness retainers (1) from the transmission.
  13. Position the electrical harness (2) out of the way.

  14. Object Number: 1979752  Size: SH
  15. Remove the electrical harness retainers (2) from the transmission.
  16. Position the electrical harness (1) out of the way.
  17. Support and secure the transmission with a suitable transmission jack.
  18. Remove the transmission support. Refer to Transmission Support Replacement.
  19. Remove the transmission control. Refer to Transmission Control Replacement.

  20. Object Number: 802767  Size: SH
  21. Remove the clutch hydraulic hose retaining clip (1) from the clutch slave cylinder.
  22. Disconnect the clutch hydraulic hose (2) from the clutch slave cylinder. It is not necessary to plug the lower hose end or slave cylinder fitting as they are equipped with check valves. Only minimal fluid loss may be experienced.

  23. Object Number: 1979746  Size: SH
  24. Remove the transmission bolts (1-6).
  25. Pull the transmission free from the engine dowels.
  26. Note: Ensure clearance is maintained between the transmission and the following:

       • The clutch assembly
       • The input shaft
       • The catalytic converters
       • The wiring harnesses
       • The propeller shaft

  27. Using the transmission jack, carefully lower the transmission from the vehicle.

Installation Procedure

    Note: Ensure clearance is maintained between the transmission and the following:

       • The clutch assembly
       • The input shaft
       • The catalytic converters
       • The wiring harnesses
       • The propeller shaft

  1. Using the transmission jack, carefully raise the transmission to the vehicle.

  2. Object Number: 1979746  Size: SH
  3. Align the transmission with the engine dowels.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the transmission bolts (1-6).
  6. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 802767  Size: SH
  7. Install the clutch hydraulic hose retaining clip (1) to the clutch slave cylinder.
  8. Note: Ensure the clutch hydraulic hose is routed in an upward direction above the clutch slave cylinder with no sharp bends, kinks, or downward loops. Ensure the clutch hydraulic hose does not come in contact with any sharp or potentially hot surfaces.

  9. Install the clutch hydraulic hose to the vehicle.
  10. Align the clutch hydraulic hose locating tab with the notch in the slave cylinder hose fitting.
  11. Push the clutch hydraulic hose (2) into the clutch slave cylinder until a "click" is heard.
  12. Tug gently on the clutch hydraulic hose (2) to ensure proper retention to the clutch slave cylinder.
  13. Install the transmission control. Refer to Transmission Control Replacement.
  14. Remove the transmission jack.
  15. Install the transmission support. Refer to Transmission Support Replacement.

  16. Object Number: 1979752  Size: SH
  17. Install the electrical harness retainers (2) to the transmission.

  18. Object Number: 1979751  Size: SH
  19. Install the electrical harness retainers (1) to the transmission.
  20. Connect the electrical connector (4) to the backup lamp switch.
  21. Connect the electrical connector (5) to the vehicle speed sensor.
  22. Install the propeller shaft. Refer to Rear Propeller Shaft Replacement.
  23. Install the catalytic converters. Refer to Catalytic Converter Replacement - Left Side and Catalytic Converter Replacement - Right Side.
  24. Install the exhaust system. Refer to Exhaust System Replacement.
  25. Inspect the transmission fluid level. Refer to Transmission Fluid Level Inspection.
  26. Lower the vehicle.
  27. Install the manual transmission control mount plate assembly. Refer to Transmission Control Mount Plate Replacement.
  28. Install the transmission control lever knob. Refer to Transmission Control Lever Knob Replacement.

  29. Object Number: 333146  Size: SH
  30. Unlock the steering column by removing the J 42640 from the steering column lower trim cover access hole.
  31. Bleed the clutch hydraulic system. Refer to Hydraulic Clutch Bleeding.

Transmission Final Test and Inspection

Complete the following procedure after the transmission is installed in the vehicle:

  1. With the ignition OFF or disconnected and clutch pedal depressed, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
  2. Place transmission in neutral, start the engine and listen for any unusual noises or evidence that any parts are binding.
  3. While the engine continues to idle raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  4. Perform a final inspection for the proper fluid level. Refer to Transmission Fluid Level Inspection.
  5. Lower the vehicle.
  6. Road test the vehicle.