Rear Suspension Support Lower Mount Replacement - Rear
Rear Suspension Support Lower Mount Replacement - Rear (Front Wheel Drive)
Special Tools
J 45725 - Frame Bushing Installer
Removal Procedure
1. Remove the spare tire.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).
3. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation (Service and Repair).
4. Remove the rear brake caliper bracket bolts.
Note: Support the rear brake calipers from the vehicle body not the suspension to prevent stressing of the brake hoses.
5. Support the rear brake caliper.
6. Support the exhaust system on a suitable stand and disconnect the rubber insulator hangers from the exhaust system.
7. Lower the exhaust only enough to allow lowering of the suspension crossmember 38 mm (1.5 in).
8. Install jackstands under the front and rear of the suspension crossmember.
Note: Both the front and rear of the suspension crossmember must be lowered equally to prevent over stressing the mounts.
9. Remove the suspension crossmember to body bolts.
10. Lower the suspension crossmember only enough to service the mount, approximately 38 mm (1.5 in).
11. Remove the upper mount.
12. Remove the lower mount using a flat chisel. Begin extracting the mount by guiding the wedge of the chisel tip between the mount flange lip and the suspension crossmember.
13. Continue extracting the mount until it is fully removed from the suspension crossmember.
Installation Procedure
1. Clean the frame mount opening.
2. Apply a thin coat of rubber lubricant GM P/N 1051717 (Canadian P/N 5728223), or equivalent to the inside of the suspension crossmember mount opening.
3. Apply a thin coat of rubber lubricant GM P/N 1051717 (Canadian P/N 5728223), or equivalent to the suspension crossmember mount.
4. Install clamp J 45725 - Installer onto the mount about 1/8 inch from the top of the mount.
5. Align the split of the mount to the front of the suspension crossmember.
6. Install J 45725 - Installer to the mount and the suspension crossmember.
7. Using J 45725 - Installer install the mount until the mount is halfway recessed in the suspension crossmember.
8. Remove only the clamp J 45725 - Installer.
9. Using J 45725 - Installer continue installing the mount until the flange lip of the mount is fully seated to the bottom of the suspension crossmember.
10. Remove J 45725 - Installer from the mount and the suspension crossmember.
11. Install the upper mount.
12. Raise the suspension crossmember.
Caution: Refer to Fastener Caution (Fastener Caution).
Note: If the suspension crossmember mount bolt does not screw in smoothly, run a tap through the frame crossmember nut in the body in order to remove foreign material. Ensure the tap does not punch through the underbody.
Do not over tighten the body mount. Over tightening may collapse a spacer or strip a bolt.
13. Install the suspension crossmember to body bolts.
Tighten the bolts to 110 Nm (81 lb ft) plus 90 degrees.
14. Remove the jackstands.
15. Install the rear brake caliper bracket and bolts. Refer to Rear Brake Caliper Bracket Replacement (Rear Brake Caliper Bracket Replacement).
16. Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation (Service and Repair).
17. Lower the vehicle.
18. Install the spare tire.