GM Service Manual Online
For 1990-2009 cars only

Tools Required

    •  J 24319-B Universal Steering Linkage Puller
    •  J 29193 Steering Linkage Installer (12 mm)
    •  J 29194 Steering Linkage Installer (14 mm)

Removal Procedure

Notice: Do not attempt to free the ball stud by using a pickle fork or wedge type tool, because seal or bushing damage could result. Use the proper tool to separate all ball joints.

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 340481  Size: SH
  3. Remove the engine protection shield, if equipped. Refer to Engine Protection Shield Replacement .
  4. Remove the idler arm ball stud nut (10).
  5. Do not reuse the idler arm ball stud nut.


    Object Number: 643351  Size: SH
  6. Remove the idler arm from the relay rod using the J 24319-B .

  7. Object Number: 340442  Size: SH
  8. Remove the idler arm frame bolts (3) and the nuts (1).
  9. Remove the idler arm (2) from the vehicle.

Installation Procedure


    Object Number: 340442  Size: SH
  1. Position the idler arm (2) on the frame.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the frame bolts (3) and the nuts (1) to the idler arm.
  4. Tighten
    Tighten the frame bolts or nuts to 99 N·m (73 lb ft).


    Object Number: 340481  Size: SH
  5. Install the relay rod (9) to the idler arm ball stud (1).
  6. Ensure the seal is on the stud.


    Object Number: 689037  Size: SH
  7. Use the J 29193 in order to seat the tapers.
  8. Tighten
    Tighten the J 29193 or the J 29194 to 54 N·m (40 lb ft) in order to seat the tapers.

  9. Install the new idler arm ball stud prevailing torque nut to the idler arm ball stud.
  10. Tighten
    Tighten the nut to 62 N·m (46 lb ft).

  11. Install the engine protection shield, if equipped. Refer to Engine Protection Shield Replacement .
  12. Lower the vehicle.
  13. Check the wheel alignment. Refer to Wheel Alignment Measurement .