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What causes the clunk noise when releasing the brake pedal?

My 2006 Pontiac GTO is making a clunk noise when releasing the brake pedal after a stop. The brake pads and rotors are all in good condition, and so far, the car seems to be braking fine. What would cause a clunk noise when releasing the brake pedal?

avatar
Lynell Spencer · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Any weird noises with your brakes are definitely cause for concern, as your car’s braking system is made up of several moving parts.
If you have ruled out brake fluid, pads, and rotors, something is likely too loose or tight in your braking system. Here are your most likely culprits:
  • Calipers: Your calipers clamp onto the rotor when you press the brake pedal. If any of your calipers fail to release when you step off the brake, you will hear a clunk and will start to experience drag from that wheel. Replacement cost: $100 per caliper.
  • CV axle or CV joints: If any of the parts of your CV system are loose, they can clunk or thump when they re-engage as you release the brake. Replacement cost: $1000 per axle.
  • Worn suspension bushings: Worn bushings create more movement in the suspension system. This will cause your clunking noise but is generally accompanied by a shimmy in your front end. Replacement cost: around $300.
However, in instances, parts may need to be tightened or lubricated without needing a replacement.
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