Here's a general outline of the process. Specific steps and tool requirements may vary slightly depending on your exact Malibu model (base, LS, etc.):
Tools You'll Likely Need:
* Jack and jack stands: Absolutely essential for safety. Never work under a car supported only by a jack.
* Lug wrench: To remove the wheel.
* Wheel chocks: To secure the other wheels.
* Socket set and wrenches: Various sizes will be needed, likely metric. Consult a repair manual for specifics.
* Ball joint separator: To separate the ball joint from the control arm.
* Tie rod separator: To separate the tie rod end from the steering knuckle.
* Hammer and punch (or pickle fork - use with caution): Potentially needed for separating ball joint and tie rod.
* Bearing press or puller: Essential for removing and installing the bearing. A press is ideal; improvising can damage the hub.
* Torque wrench: Crucial for tightening bolts to the manufacturer's specifications. Incorrect torque can damage components or lead to failure.
* Penetrating oil (like PB Blaster): Helps loosen rusted or seized bolts.
* Shop rags: For cleaning.
* Repair manual: A Haynes or Chilton manual for your specific year and model Malibu is highly recommended. This will provide detailed instructions and torque specifications.
General Steps (Consult your repair manual for precise details):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks on the wheels that are not being worked on.
2. Remove the Wheel: Loosen the lug nuts before jacking up the car. Jack up the vehicle securely and place it on jack stands. Remove the wheel.
3. Disconnect Brake Caliper: Remove the caliper bolts and carefully support the caliper with a wire or bungee cord to prevent it from hanging by the brake line.
4. Disconnect ABS Sensor (if applicable): Carefully disconnect the ABS sensor wire from the hub assembly.
5. Disconnect Tie Rod End: Use a tie rod separator to separate the tie rod end from the steering knuckle.
6. Disconnect Ball Joint: Use a ball joint separator to separate the ball joint from the control arm.
7. Remove the Hub Assembly: This may involve removing several bolts securing the hub to the steering knuckle.
8. Remove the Old Bearing: This is where a bearing press or puller is essential. Attempting to remove it with brute force will almost certainly damage the hub and bearing.
9. Install the New Bearing: Use the bearing press to install the new bearing into the hub assembly. Ensure it's seated correctly and flush.
10. Reassemble Everything: Reinstall the hub assembly, making sure everything is properly aligned. Reconnect the ball joint, tie rod end, brake caliper, and ABS sensor.
11. Torque Everything to Spec: This is crucial. Use your torque wrench and consult your repair manual for the correct torque values for all bolts and nuts. Improper torque can lead to failure.
12. Install the Wheel and Lower the Vehicle: Tighten lug nuts, lower the car, and then tighten the lug nuts to the correct torque specification.
13. Test Drive: After reassembly, test drive the vehicle carefully to ensure everything is working correctly and there are no unusual noises.
Important Considerations:
* Repair Manual: A repair manual specific to your 1999 Chevy Malibu is absolutely vital. This guide provides a general overview; the specific steps and torque specifications will be in your manual.
* Press/Puller: Investing in or borrowing a bearing press or puller is necessary for this job. Trying to remove or install the bearing without one will likely result in damage.
* Safety: Always prioritize safety. Never work under a car supported only by a jack. Use jack stands and wheel chocks.
This is a complex repair. If you are not comfortable performing these steps, take your car to a qualified mechanic. Improperly installed wheel bearings can be extremely dangerous.
