Tools you'll likely need:
* Jack and jack stands: Essential for safely lifting the vehicle. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the wheels that remain on the ground.
* Wrench(es): Likely a combination of metric and SAE sizes. Check your repair manual for the correct sizes for your shock mounting bolts and nuts. Ratcheting wrenches are highly recommended.
* Socket set: A complete set will be helpful, with extensions and possibly a universal joint for better access.
* Torque wrench: Crucial for tightening bolts to the manufacturer's specified torque, preventing damage.
* Penetrating oil (like PB Blaster): Apply liberally to bolts several hours before starting to loosen them, especially if they're rusty.
* Shop rags or paper towels: For cleaning and catching fluids.
* New rear shocks: Ensure you purchase the correct shocks for your Jeep's model and configuration (e.g., 4x4, suspension type).
* Optional but recommended: Air compressor with an impact wrench for easier removal of stubborn bolts.
Procedure (General Steps):
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Wear safety glasses.
2. Lift and Support: Securely lift the rear of the Jeep using the jack and place it on jack stands under the frame near the rear axle. Make sure the vehicle is stable before proceeding.
3. Remove the Wheel: Remove the wheel from the side you're working on.
4. Locate the Shock: The rear shocks are usually located near the axle, connected at the top to the chassis and at the bottom to the axle.
5. Disconnect the Shock:
* Top Mount: There will likely be one or more bolts securing the top of the shock to the chassis. Use the appropriate wrench(es) to carefully remove these bolts. Sometimes there's a nut on a stud, sometimes it's bolts through a bracket.
* Bottom Mount: Similarly, remove the bolts or nuts securing the bottom of the shock to the axle. These can be stubborn due to rust and corrosion. Penetrating oil is your friend here.
6. Remove the Shock: Once both top and bottom connections are loose, carefully remove the shock absorber from its mounting points. It may be slightly compressed, so be prepared for it to spring back somewhat.
7. Install the New Shock: Install the new shock absorber in the reverse order of removal. Make sure it's seated correctly in all mounting points.
8. Tighten Bolts: Tighten all bolts to the manufacturer's specified torque using a torque wrench. Over-tightening can damage threads or components.
9. Repeat: Repeat steps 5-8 for the other rear shock.
10. Lower the Vehicle: Carefully lower the vehicle using the jack.
11. Replace Wheels: Replace the wheels and tighten the lug nuts securely.
12. Test: Test the shocks by bouncing on each rear corner of the vehicle. They should rebound smoothly and not bounce excessively.
Important Considerations:
* Rust: Older Jeeps are prone to rust, making bolt removal difficult. Patience and penetrating oil are key. If a bolt breaks, you might need to drill it out.
* Spring Tension: Be careful when removing and installing the shocks; the springs can store significant energy. If you are uncomfortable with this procedure, seek professional help.
* Torque Specifications: Adhering to the correct torque specifications is crucial to prevent damage and ensure safe operation. Consult your repair manual for these values.
This is a simplified overview. Always refer to a repair manual specific to your 1997 Jeep Grand Cherokee for detailed instructions, diagrams, and torque specifications. If you're not comfortable performing this repair yourself, take your Jeep to a qualified mechanic. Improperly installed shocks can lead to dangerous driving conditions.
