Special Tools

J 45725 Frame Bushing Installer

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




Note: Whenever the frame is moved in relation to the body, disconnect the intermediate shaft from the steering gear stub shaft.

2. Disconnect the intermediate shaft from the steering gear stub shaft. Refer to Intermediate Steering Shaft Replacement.
3. Install a jackstand under the center of the frame, between the rear frame insulators.

Note: In order to remove any frame insulator, loosen the adjacent frame insulator to permit the frame to separate from the body. Use caution when lowering or tilting the frame to prevent damage to other components.




4. Remove the reinforcement bolts (2).
5. Remove the reinforcement studs (3).

Note: When the frame insulator bolts are removed, always discard the bolts and replace with new bolts.

6. Remove the frame to body bolts (4).
7. Remove the reinforcements (1).



8. Lower the rear of the frame only enough to service the insulator, approximately 38 mm (1.5 in).
9. Remove the upper insulator.



10. Remove the lower insulator using a flat chisel. Begin extracting the insulator by guiding the wedge of the chisel tip between the insulator flange lip and the vehicle frame.



11. Continue extracting the insulator until it is fully removed from the frame.

1. Clean the frame insulator opening.
2. Apply a thin coat of rubber lubricant GM P/N 1051717 (Canadian P/N 5728223), or equivalent to the inside of the frame insulator opening.
3. Apply a thin coat of rubber lubricant GM P/N 1051717 (Canadian P/N 5728223), or equivalent to the frame insulator.



4. Install clamp J 45725 Installer onto the insulator about 1/8 inch from the top of the insulator.



5. Align the split of the insulator to the front of the frame.
6. Install J 45725 Installer to the insulator and the frame.



7. Using J 45725 Installer install the insulator until the insulator is halfway recessed in the frame.
8. Remove only the clamp J 45725 Installer .



9. Using J 45725 Installer continue installing the insulator until the flange lip of the insulator is fully seated to the bottom of the frame.
10. Remove J 45725 Installer from the insulator and the frame.



11. Install the upper insulator.
12. Raise the rear of the frame.



13. Install the reinforcements (1).

Caution: Refer to Fastener Caution in the Preface section.

Note: If the frame insulator bolt does not screw in smoothly, run a tap through the frame nut in the body in order to remove foreign material. Ensure the tap does not punch through the underbody.

Do not over tighten the insulator. Over tightening may collapse a spacer or strip a bolt.
14. Install the rear frame to body bolts (4).

Tighten
Tighten the bolts to 110 N·m (81 lb ft) plus 90 degrees.

15. Install the reinforcement bolts (2).

Tighten
Tighten the bolt to 60 N·m (44 lb ft).

16. Install the reinforcement studs (3).

Tighten
Tighten the stud to 60 N·m (44 lb ft).

17. Remove the jackstand.



18. Connect the intermediate shaft to the steering gear stub shaft. Refer to Intermediate Steering Shaft Replacement.
19. Lower the vehicle.