This guide provides a general overview. Always refer to a repair manual specific to your 2001 Grand Prix GT for detailed instructions, torque specifications, and diagrams. These specifications are crucial for safety and proper brake function.
Tools You'll Need:
* Jack and jack stands (SAFETY FIRST: Secure the vehicle properly)
* Wheel chocks
* Lug wrench
* Socket wrench set (metric)
* Brake caliper wrench or C-clamp
* Pliers
* Wire brush
* Brake cleaner
* New rear brake pads
* New rear brake rotors (if needed; inspect for wear)
* Possibly a caliper rebuild kit (if calipers are leaking or sticking; inspect for leaks and smooth operation)
* Torque wrench (crucial for proper tightening)
* Gloves
* Safety glasses
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the rear of the vehicle using the jack and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Inspect the Brakes: Carefully inspect the brake pads, rotors, and calipers. Measure the pad thickness – replace if they're worn below the minimum thickness specified in your repair manual. Check the rotors for scoring, wear, or excessive rust. If the rotors are damaged, they need replacement. Inspect the calipers for leaks or sticking pistons.
4. Remove the Caliper: Depending on your Grand Prix's specific caliper design (some use a single bolt, others may have a bracket), you'll need to either unbolt the caliper from its bracket or use a caliper piston compressor tool to compress the caliper piston. This allows you to remove the caliper without damaging the brake hose. Be careful not to let the brake hose hang; support it to prevent damage.
5. Remove the Brake Pads: Once the caliper is removed, the old brake pads should slide right out.
6. Replace Rotors (if necessary): If the rotors are being replaced, carefully remove them. Clean the hub mating surface thoroughly.
7. Install New Rotors (if necessary): Install the new rotors, ensuring they are properly seated.
8. Install New Brake Pads: Install the new brake pads into the caliper bracket.
9. Reinstall the Caliper: Reinstall the caliper. If you used a piston compressor, carefully depress the piston and fully seat the pads. If the piston is difficult to push, you likely need a caliper rebuild kit to replace the seals and boot.
10. Bleed the Brakes (IMPORTANT): After reinstalling the caliper, you'll need to bleed the brakes to remove any air that may have entered the system. This is crucial for proper braking function. Consult your repair manual for the correct bleeding procedure. Bleeding usually involves opening the bleeder valve on the caliper while an assistant pumps the brake pedal.
11. Reinstall the Wheel: Tighten the lug nuts in a star pattern. Lower the vehicle and torque the lug nuts to the manufacturer's specified torque.
12. Test the Brakes: After reinstalling the wheel, carefully test the brakes several times from a low speed to ensure they're working correctly.
Important Considerations:
* Repair Manual: A repair manual specific to your 2001 Grand Prix GT is invaluable. It will provide detailed diagrams, torque specifications, and other critical information.
* Caliper Rebuild: If your calipers are leaking or pistons are sticking, you'll likely need to rebuild them using a caliper rebuild kit. This is a more complex repair.
* Brake Fluid: Always use the correct type and DOT rating of brake fluid specified for your vehicle.
* Safety: Always prioritize safety. Use jack stands, work in a well-lit area, and wear appropriate safety gear.
This is a general guide. Improper brake repair can be dangerous. If you are unsure about any step, consult a professional mechanic.
