Tools you'll likely need:
* Jack and jack stands: Essential for safely lifting the car. Never work under a car supported only by a jack.
* Wheel chocks: To prevent the car from rolling.
* Lug wrench: To remove the wheels.
* Sockets and wrenches: Various sizes, likely including metric sizes.
* C-clamp or brake caliper compressor tool: To compress the caliper piston.
* Pliers: For removing brake lines and clips.
* Brake cleaner: To clean brake components.
* Wrench for caliper mounting bolts.
* Screwdriver(s): Possibly needed for caliper bracket bolts.
* New brake pads and rotors (if needed): Get the correct parts for your Impala model.
* Gloves: To protect your hands.
* Safety glasses: To protect your eyes.
* Torque wrench: Crucial for tightening bolts to the correct specification.
Steps (General Outline - Consult your repair manual for specifics):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks.
2. Lift and Secure: Jack up the car and securely place it on jack stands.
3. Remove Wheel: Remove the lug nuts and take off the wheel.
4. Inspect Rotors: Examine the rotors for wear, scoring, or excessive rust. Replace if necessary. Often, rotors are only changed if scored or significantly worn below the minimum thickness.
5. Remove Caliper: Locate the caliper mounting bolts. Use the appropriate wrench to remove them. Carefully support the caliper as you remove it; it's still connected by the brake line. You might need to use a wire or zip tie to hang the caliper to prevent putting stress on the brake line.
6. Compress Caliper Piston: Use a C-clamp or caliper compressor tool to push the piston back into the caliper. This creates space for the new, thicker brake pads. Be careful not to damage the piston seal. You may need to gently turn the piston while compressing it.
7. Remove Brake Pads: The old brake pads should now be easily removable. Note their orientation for proper installation of the new pads.
8. Install New Brake Pads: Carefully install the new brake pads, making sure they slide smoothly in their guides.
9. Install Caliper: Reinstall the caliper onto the bracket, ensuring the caliper slides freely. Tighten the mounting bolts to the manufacturer's specified torque.
10. Install Wheel: Reinstall the wheel and tighten the lug nuts. Don't overtighten; use a torque wrench.
11. Lower Vehicle: Lower the vehicle and remove the jack stands.
12. Repeat: Repeat steps 3-11 for the other wheels.
13. Bleed Brakes (Optional but Recommended): After changing brake pads and potentially rotors, bleeding the brakes is highly recommended. This removes air from the brake lines. Look up how to bleed your car's brakes properly, as this usually involves two people and a wrench to operate the bleed valve on each caliper.
Important Considerations:
* Brake Fluid: Brake fluid is hygroscopic (absorbs moisture), which can degrade brake performance. If you have to open the brake system (e.g., during bleeding), consider flushing and replacing the brake fluid. Brake fluid is corrosive, so be careful when handling it.
* Rotor Thickness: Check the minimum thickness of your rotors. If they are below the minimum, replace them.
* Caliper Slides: Make sure the caliper slides smoothly in its brackets. If they are sticky or seized, you may need to clean and lubricate them.
* Wear Indicators: Check the wear indicators on your brake pads to determine when they need to be replaced. These usually make a squeaking noise when it's time to change them.
This is a simplified overview. Always consult a repair manual specific to your 2000 Chevrolet Impala before attempting this repair. Improper brake repair can be extremely dangerous. If you're unsure about any step, it's best to seek professional help.
