Tools you'll likely need:
* Jack and jack stands: Absolutely essential for safety.
* Wheel chocks: For added safety.
* Socket wrench set (metric): Various sizes.
* Wrench set (metric): Various sizes.
* Ball joint separator: To separate the ball joint from the control arm.
* Tie rod separator: May be needed depending on access.
* Hammer and punch: Possibly needed for stubborn components.
* CV joint removal tool: Highly recommended to avoid damaging the axle boot.
* New CV joint: Make sure you get the correct one for your vehicle.
* Grease: For the new CV joint.
* New CV axle boot (if damaged): Replacing the boot is highly recommended even if it doesn't seem damaged.
* Penetrating oil (PB Blaster or similar): To help loosen rusted or seized bolts.
* Torque wrench: To tighten bolts to the proper specification.
General Steps (Simplified):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle securely with the jack and support it with jack stands.
2. Remove the Wheel: Remove the wheel on the side of the axle needing repair.
3. Disconnect Components: This is where the complexity begins. You'll likely need to disconnect the brake caliper, possibly the ABS sensor, and definitely the lower ball joint and tie rod end. Consult your repair manual for the exact procedure and order of operations. These components may require specialized tools for separation.
4. Remove the Axle: Once the components are disconnected, you should be able to remove the axle shaft from the transmission or differential. This often involves removing a retaining clip or nut. Again, your repair manual is crucial here.
5. Separate the CV Joint: Use the CV joint removal tool to separate the damaged CV joint from the axle shaft. This tool prevents damage to the axle shaft.
6. Install the New CV Joint: Pack the new CV joint with grease and carefully install it onto the axle shaft, ensuring it's seated properly. The new CV joint may have a retaining ring that needs to be installed.
7. Reassemble: Carefully reverse the disassembly process, ensuring all components are properly aligned and tightened to the correct torque specifications.
8. Check for Leaks: Before lowering the vehicle, check for any leaks or loose components.
9. Lower and Test: Lower the vehicle and test-drive it carefully to ensure everything functions correctly.
Important Considerations:
* Repair Manual: This is absolutely critical. Don't attempt this repair without a detailed manual specific to your 2002 Chevy Trailblazer.
* Safety: Working under a vehicle is dangerous. Always use jack stands and take the necessary precautions.
* Tools: Having the correct tools makes the job significantly easier and less likely to damage components.
* Difficulty: This is not a beginner-level repair. If you're not comfortable with automotive repair, it's best to take it to a qualified mechanic.
This is a general overview. Always refer to a repair manual for your specific vehicle before attempting this repair. Improper repair can lead to serious damage and injury. If you're unsure, it's always best to consult a professional mechanic.
