This is a general guide; always consult a repair manual specific to your vehicle year and model for detailed instructions and torque specifications. These specifications are crucial for safety.
Tools You'll Need:
* Jack and jack stands (crucial for safety!)
* Lug wrench
* Wheel chocks
* Socket wrench set (metric)
* Wrenches (metric)
* Brake caliper piston compression tool (essential)
* C-clamp (may be needed as an alternative to a compression tool)
* Wire brush
* Brake cleaner
* New brake pads
* New rotors (likely necessary; check their condition carefully)
* Penetrating oil (like PB Blaster)
* Gloves
* Safety glasses
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Use jack stands to securely lift the rear of the car after jacking it up. Never work under a car supported only by a jack.
2. Remove the Wheel: Remove the lug nuts and carefully take off the wheel.
3. Inspect the Brakes: Carefully inspect the brake pads, rotors, and caliper for wear and damage. Measure the pad thickness; replace them if they're worn below the minimum thickness specified in your repair manual. Rotors should be inspected for scoring, grooves, or excessive wear. Often, rotors need replacement along with pads.
4. Remove the Caliper: Depending on your specific model, there might be a single bolt or two bolts holding the caliper to the caliper bracket. Use the appropriate wrench to loosen and remove these bolts. The caliper will likely be heavy; carefully support it with a bungee cord or wire to prevent it from hanging by the brake line.
5. Compress the Caliper Piston: This is critical. Use a caliper piston compression tool to push the piston back into the caliper bore. This creates space for the new, thicker brake pads. A C-clamp can work in a pinch, but a specialized tool is safer and easier. Be careful not to damage the piston seal or the caliper.
6. Remove the Old Brake Pads: The old brake pads should now be easily removable. If they're stuck, gently pry them out. Clean the caliper bracket and caliper thoroughly with a wire brush and brake cleaner.
7. Install the New Brake Pads: Insert the new brake pads into their respective locations in the caliper bracket.
8. Reinstall the Caliper: Carefully mount the caliper back onto the caliper bracket, ensuring it's properly seated. Tighten the caliper bolts to the manufacturer's specified torque.
9. Reinstall the Wheel: Replace the wheel and tighten the lug nuts in a star pattern to ensure even pressure.
10. Repeat for the Other Side: Follow the same procedure for the other rear wheel.
11. Lower the Vehicle: Carefully lower the vehicle using the jack.
12. Test the Brakes: Before driving, pump the brake pedal several times to ensure the brakes are working correctly. Test drive the vehicle carefully, paying close attention to the braking performance. If anything feels off, have the brakes inspected by a professional immediately.
Important Considerations:
* Bleeding the Brakes: In most cases, you won't need to bleed the brakes after replacing rear pads and rotors, but it's always a good idea to check your repair manual. If you do need to bleed them, it's a separate procedure requiring a helper.
* Parking Brake Adjustment: The parking brake may need adjustment after replacing the rear brakes. Your repair manual will outline the procedure.
* Torque Specifications: Always consult your repair manual for the proper torque specifications for all bolts. Over-tightening can damage components, while under-tightening can lead to looseness and failure.
This information is for guidance only. Always refer to a repair manual specific to your 1996 Pontiac Grand Prix SE for detailed instructions and safety precautions. Improper brake work is dangerous; if you're not sure about any step, seek professional help.
