Question about 1998 Pontiac Grand Am

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Grinding noise when I pull off and clunking noise on bumps

My anti lock brake light is on as well as my brake lights. I changed the pads, but I have a grinding noise sometimes when i oull off and i hear a clunking noise from the drivers side brake caliper area when i turn or hit a bump or hole. what couls the problem be. Bearings, struts, what???

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  • Pontiac Master
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Front hub bearing. If you were the one who replaced the pads you should have turned the hub while the caliper was off and checked for roughness or wobble. Imagine the rotor wandering from side to side and rubbing the pads; thats what a worn hub will do.

Posted on Apr 23, 2009

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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).

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Loud grinding/clunking noise when driving, lessens when I press the brake


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driving home, i noticed some metal clunking sounds coming from the front driversside. at ... hmmmm....if it's grinding, then probably a bearing.

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Dec 26, 2015 | Cars & Trucks

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Thought back brake pads etc needchanging as could feel grinding and was squealing when brakes applied.tyrns out was worn tyre on rim had that changed but can still hear the noise. Its annoying


Hi, your problem is your brake caliper it could be its not coming on properly to lock on to the disc . When they don't lock on like they should you will get a squealing also on some disc brakes you get anti squeal shims fitted. With some lower quality brake pads you may get squealing. I don't know what kind is fitted on your motor brake pads but its worth another look . The worst outlook is the brake pads are worn right down and you are grinding metal to metal ie disc to pad without anything in between.Should get it looked at.

Dec 23, 2015 | 2006 Mitsubishi Colt

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Noise front right hub when i hit a bump


Jack the front wheels and check for looseness wheel bearings ,ball joints etc.if they are ok dismantle and check.

Dec 09, 2015 | 2001 Ford Excursion

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When appling brakes i sometimes hear grinding and ticking noise and abs light is on


A grinding noise is usually an indication that the brake pads are worn out. You may also have a defective wheel bearing causing this noise and in turn can cause the ABS light to come on due to poor sensor contact. Have the brakes and bearings inspected soon to avoid unnecessary costly repairs.

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Why do I hear grinding noises while driving?


Hit in the rear axle may have damaged bearings or brake parts. Jack up the side you hear noise from, put on stand, then have helper rotate wheel while you look underneath and listen to see where noise is coming from. Use length of old fuel or heater hose, one end in ear, to locate exactly where noise comes from.

May 27, 2015 | 1996 Jeep Cherokee Country

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Front end clunking noise


Take the brakes apart & clean up all rust,check everything out
& lube things when putting back together
Have to do that at least once a year

Don't need machining every year or new pads, but have to knock
down the edge on the rotors & get rid of rust & lube (anti-seize on
everything but inside the caliper slide bolts, there you use the synthetic caliper lube

The clunk could be worn drive axle joints or drive shaft joints
or shocks
When your on the brakes or hit bumps your loading things differently & the clunk goes away


Mar 19, 2014 | Dodge Ram 1500 Cars & Trucks

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On my 2005 pontiac bonneville se v6 i change the rotor and brake pads on my car annd i still hear noise on the right side of my car the anti lock light is still on to what that mean?


The abs light means the system is disabled. You would need to have it checked for trouble codes to proceed. The noise could be the speed sensor on one of the front wheels.

Jan 26, 2014 | Cars & Trucks

1 Answer

2003 Chevy Silverado is making a clunking noise, on and off sometime over bumps. Also a deep grinding type noise in the same location while driving not constant


Hello Karla,

It sounds like you may have a bearing or CV joint going out. Your vehicle will need to be jacked up and inspected. It may be more than one problem too. Its possible the dragging noise could be something between brake pads and rotor, but the grinding that comes and goes in reference to direction sounds like a bearing or joint. I would take it to a professional right away and ask for an estimate only, and then get other estimates from other shops as well. Good luck to you.

Nov 25, 2013 | 2003 Chevrolet Silverado 1500

1 Answer

Why are my brakes locking up and grinding whenever i hit a bump or uneven surface while braking?


Sounds like you have a speed sensor signal dropping out. This would cause the ABS system to falsely think one of the wheels has locked up and would turn on the abs to unlock the wheel.

You can visually check the wiring harnesses to the speed sensors to see if there are any corroded connections, corroded wires or broken wires. If everything looks good than the next step would be to drive it with a scan tool and watch ABS data. You should be able to spot the speed sensors that drops out on the scan tool when the problem occurs. Than you can focus on that wheel to see what the problem is.

Aug 13, 2012 | 2005 Chevrolet Equinox

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