Question about 1999 Pontiac Grand Am GT

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Brakes make metal grinding sound when applied. Changed out the brakes and the rotors. On the back of the brake pads were signs of metal grinding. Replaced rotors and Brakes. First 10 minutes of driving with limited brake usage on the freeway, everything was fine. Get to work about 10 miles away and as I am pulling into the parking lot I noticed the sound had intesified. I also notice that when i press the brakes in the brakes do not release completely. So they tend to make a metal grinding noise as I drive. It makes a lot of grinding noise as I apply the break and as I depress it completely, it makes a loud squeal. What could it be

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Check caliper for correct operation. The sliders, did you grease them?

Posted on Apr 09, 2017


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Posted on Jan 02, 2017

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SOURCE: Left brake making loud noise when braking

It's possible the caliper is frozen and has worn one pad down completely. Get it checked, soon

Posted on Mar 27, 2009

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SOURCE: grinding noise in front end when coming to a stop,

could be a stone stuck in one of the calipers , sometimes driving in reverse can clear the stone.

Posted on Jun 26, 2009

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SOURCE: 2002 Grand Prix GT - When applied the breaks work

sounds like ABS. try pulling the ABS fuse under hood and see what happens.

Posted on Aug 20, 2009

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SOURCE: 1990 Pontiac Bonneville brakes

You'll have to replace the pads and rotors....super simple!

They come off easy and the whole job is less than $100.....will cost WAAAAYYY more at a garage.

Removal & Installation

  1. Disconnect the negative battery cable.
  2. Remove 2/3 of the brake fluid from the brake reservoir using a clean syringe or equivalent.
  3. Raise and safely support the vehicle with jackstands.
  4. Mark the relationship of the wheel to the hub and bearing assembly.
  5. Remove the tire and wheel assembly.
  6. Remove the caliper and suspend it from the strut with a wire hook or suitable piece of wire. Do NOT disconnect the brake hose or allow the caliper to hang from the brake line!
If the original rotor is still on the vehicle, it may be retained with star washers, so you must remove and discard these retaining washers.
  1. Remove the rotor assembly by sliding it off the hub. If it is stuck on, use penetrating oil and tap lightly until free.

The rotor can be removed by sliding it straight off the lug studs

To install:
  1. Install the brake rotor over the hub assembly.
  2. Install the brake caliper as outlined in this section.
  3. Install the wheel and tire assembly.
  4. Carefully lower the vehicle. Tighten the wheel lug nuts to 100 ft. lbs. (136 Nm). If the lug nuts aren't tightened properly, the rotor will warp from heat, causing premature wear and noise.
  5. Fill the master cylinder reservoir to the FULL level with the correct type of DOT 3 brake fluid from a clean, unsealed container.
  6. Firmly depress the brake pedal three times before moving the vehicle.

Posted on Jan 12, 2010

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SOURCE: We have changed the rotors

have you checked the rear brakes condition ? grinding noise could be coming from there.

Posted on Sep 10, 2010

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Brakes make a whistle noise when applied and sometimes a low grown or grinding when coming to a slow stop or start.

A grinding or rumbling noise can also be symptoms of a wheel bearing or constant velocity joint in a driveshaft. A worn wheel bearing can also cause a 'whistling' sound (as can a worn CV joint).

A grinding noise with brakes is either worn pads causing metal to metal contact on the brake disk/rotor, or the brake backing plate catching on a spinning rotor ... or a loose/missing anti squeal brake shim (they stop the pads from rattling and vibrating).

However, as you say a mechanic has looked at the brakes and can't find anything wrong .. I think I would begin to suspect a wheel bearing or constant velocity joint on the driveshaft (front wheel drive cars).

May 05, 2016 | 2007 Honda Accord Sedan

1 Answer

Rear brakes make a grinding sound when the brake pedal is being released. The noise is gone after the pedal is fully released but then comes back again after the brakes are applied again and then being...

I would say that the grinding you hear is metal to metal, pads to rotors. You need a brake job NOW before this gets worse and more costly. Good Luck Friend.

Dec 30, 2017 | 2011 Ford Explorer

1 Answer

Grinding or rubbing noise in left front wheel, mostly when braking . What do i look for?

Grinding is a sign on brakes in need of replacement. Your pads are worn through and now the metal backing plate of the pad is grinding up against the rotor. Replace the pads and rotors asap to prevent further damage.

Mar 30, 2012 | Cars & Trucks

2 Answers

Grinding and rubbin when breaking, seems to be getting worse. Only happens when breaking.

Get your brake pads replaced. Sounds like the brake linings have worn down to nothing, and you are now metal to metal on your brakes.

Sep 05, 2011 | 2000 GMC Jimmy

1 Answer

Grinding in front brakes

Most common cause is the brake pads have worn and you have a metal to metal situation where there is no life left in the pads and they are scraping the rotors. Another cause could be a hung up caliper (you would notice the truck pull to one side or another when you apply the brakes if this is the case). One last possibility is worn out brake bearings that will grind when faulty. Either way, it sounds like you need a brake job that will include pads and rotors.

Aug 30, 2011 | 2001 Nissan Pathfinder

2 Answers

My escape is making a grinding sound, along with pulsating when braking. My husband has replaced the abs sensor, and it is still doing te same thing. Any suggestions what to do next?

The grinding sound when braking is almost surely worn brake pads. If an abs sensor is bad it will set the abs light on. Heres an easy way to figure whether to look at the front or rear brakes first. When braking, take notice as to whether the vibration is felt more in the steering wheel or the seat. If it is more in the steering wheel take a look at your front brakes first, and obviously if it is felt in the seat look at the back brakes first. Both front and rear need to be checked out because the pulsating you are feeling is due to rotors or drums that have been heated up and warped. In order to fix both problems, you most likely will need brake pads and rotors/drums. If you just replace the pads, not only will the pads wear away faster due to the damage to the rotors/drums, but your vibration issue will not go away and infact may intensify.

Dec 10, 2009 | 2003 Ford Escape

1 Answer

Squealing or clicking sound and then next day grinding sound louder when you take foot off accelerator clicking sounds from right side grinding underneath 2002 grand cherokee

Squealing usually indicates that the brakes are in need of replacement. There is a small piece of metal that as the brake pads wear comes in contact with the metal rotor. When the pads get close to being worn away the tab touches the rotor and it squeals. The tab can also click.
When the pads are worn away completely the metal backing comes in contact with the rotor and it grinds. Grinding is bad. It means the car's brakes are metal to metal. This will cause damage to the rotors resulting in an even more costly brake job.
You should have it taken care of ASAP.
I hope this helps.

Oct 16, 2009 | 2002 Jeep Grand Cherokee

3 Answers

Screeching in right rear wheel ,sound stops when breaks applied

its the brake pad wear indicator telling you your pads are in need of replacing

Sep 09, 2009 | 2006 Kia Sedona

2 Answers

Brakes are starting to grind really bad and car vibrates when im coming to a stop. any idea what may be going on with my brakes?

Its most likely time to change those break pads, and shoes, also wouldnt hurt to get an alignment while your at it... hope this helps!

Jul 31, 2009 | Mitsubishi Galant Cars & Trucks

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