GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 41352 Modular Column Holding Fixture
    • J 42640 Steering Column Anti Rotation Pin

    Important: Before any repair can take place, the column must be fully extended. After the soft stop, press the tilt lever button forward 8 more times, the column will override the soft stop and extend 3 mm more.

  1. Remove the tilt lever assembly. Refer to Tilt Lever Replacement - On Vehicle .

  2. Object Number: 312274  Size: SH
  3. Remove the steering column closeout trim cover (1).

  4. Object Number: 312284  Size: SH
  5. Remove the 2 wire harness straps (2) from the wire harness assembly (1).

  6. Object Number: 312287  Size: SH
  7. Remove the wire harness strap (2) from the upper wire shield (3).
  8. Remove the wire harness strap (2) from the lower wire shield (4).
  9. Remove the wire harness strap (2) from the upper tilt head assembly (1).

  10. Object Number: 312291  Size: SH
  11. Remove the 3 connectors (2) from the entertainment and comfort interface module assembly (1).

  12. Object Number: 312298  Size: SH
  13. Remove the entertainment and comfort interface module assembly (2) from the lower wire shield (1).

  14. Object Number: 312302  Size: SH
  15. Pop open the lower wire shield (1) and remove the wire harness assembly (2). Notice the direction (3) the wire harness assembly is routed.

  16. Object Number: 312312  Size: SH
  17. Remove the 2 pan head tapping screws (2) from the lower trim cover (1).
  18. Remove the lower trim cover (2).

  19. Object Number: 312321  Size: SH
  20. Remove the power tnt toggle switch assembly (2) from the lower trim cover (1).

  21. Object Number: 312325  Size: SH
  22. Remove the TORX® head screw (2) from the upper trim cover (1).
  23. Remove the upper trim cover (1).

Tools Required

    • J 41352 Modular Column Holding Fixture
    • J 42640 Steering Column Anti Rotation Pin

    Object Number: 312325  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the upper trim cover (1) and secure by using the TORX® head screw (2).
  2. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).


    Object Number: 312321  Size: SH
  3. Install the power tnt toggle switch assembly (2) into the lower trim cover (1).

  4. Object Number: 312312  Size: SH
  5. Install the lower trim cover (1).
  6. Install the 2 pan head tapping screws (2) to the lower trim cover (1).
  7. Tighten
    Tighten the screws to 3.5  N·m (31 lb in).


    Object Number: 312302  Size: SH
  8. Route the wire harness assembly (2). Notice the direction (3) the wire harness assembly (2) goes into the lower wire shield (1).

  9. Object Number: 312298  Size: SH
  10. Install the entertainment and comfort interface module assembly (2) into the lower wire shield (1).

  11. Object Number: 312291  Size: SH
  12. Install the 3 connectors (2) into the entertainment and comfort interface module assembly (1).

  13. Object Number: 312287  Size: SH
  14. Install the wire harness strap (2) to the upper wire shield (3).
  15. Install the wire harness strap (2) to the lower wire shield (4).
  16. Install one wire harness strap (2) to the upper tilt head assembly (1).

  17. Object Number: 312284  Size: SH
  18. Install the 2 wire harness straps (2) to the wire harness assembly (1).

  19. Object Number: 312274  Size: SH
  20. Install the steering column closeout trim cover (1).
  21. Install the tilt lever assembly. Refer to Tilt Lever Replacement - On Vehicle .