GMC grinding sound in front

PaulW_NJ · Nov 9, 2009

My 2002 Yukon (135 K mikes) has been making a grinding sound in the front. It's most noticeable when you're slowing to a stop, at 10-20 mph. It was suggested that I should check the front wheel bearings. I didn't realize it, but you don't repack wheel bearings any more, but have to replace the hub and bearings all together, for about $150-200 each. Has anyone experienced this noise,and replaced their bearings?

rustred · Nov 9, 2009

ever thought you might need brakes, and that your on steel to steel and the damage is done already.

Anonymous-0 · Nov 9, 2009

135,000 miles. I'm with Red, time to replace the brake pads and rotors..

PaulW_NJ · Nov 9, 2009

Nah, come on, that's too easy. I just replaced the rotors and pads a couple weeks ago, which is the second or third time on that truck. I should have said that.

bob featherstone · Nov 9, 2009

my son has a 2000 gmc 2 wd pickup
both hubs have been done like you say, changed complete hub assebly
bob

rustred · Nov 9, 2009

well better get your brgs. checked then. jack it up or get it on a hoist and giver the inspection.

howeduin · Nov 9, 2009

sounds like unwanted abs activation to me

JK-NY · Nov 9, 2009

It sounds like it could be wheel bearings. I had one go bad on my 2004 GMC 1/2 ton 4wd at about 20-22,000 mi. They are a 1 piece sealed unit (bearing,hub w/abs sensor)that bolts into the steering knuckle - and when they go bad you can get the false ABS activation mentioned below.

Brian Jasper co. Ia · Nov 9, 2009

If it's only unwanted ABS, you can fix it by pulling the sensors out of the hubs and removing the rust from under the sensors.
The nub and bearing assemblies are kind of pricey. Usually they will have excessive play in them. If you swerve from side to side, the bearing causing the noise will be louder when it is on the outside of the swerve.

cjd12000 · Nov 10, 2009

Have a 03 serria and the wheel bearings went at 85000 miles approx on both sides. Makes and awfull grinding. To check just jack up and grab top and bottom of tire. if it is bad it will move back and forth. To change you will need heat and will have to trash a rotor. Take tire off and rotor and caliper. take out the bolts holding the wheel bearing and the nut holding axle if 4 wheel. Put rotor back on and put lugs on. Then heat and hit rotor with sledge. it will pop out with enough heat and force, I kive in ny so mine was pretty rusted in there from road salt

PaulW_NJ · Nov 10, 2009

Thanks for the replies! I don't think it's the ABS because when I hear the sound I don't necessarily have the brakes applied. I'll jack it up and see if I get any motion in the hub. I never heard about using a rotor to help get the hub off: sounds like a good idea! Now I'm glad I threw the old hubs into the scrap pile when I changed them last month. From the sounds of it, I guess I should be glad I've gotten 135K miles on the original hubs.

DJM75 · Nov 11, 2009

it it is your wheel bearing it will get worse or better when you turn left or right. if it gets worse when you turn left its the right bearing and vice versa. And you dont have to ruin a rotor to change them I have done several and never ruined a rotor.

GMC grinding sound in front

PaulW_NJ

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rustred

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Anonymous-0

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PaulW_NJ

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bob featherstone

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rustred

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howeduin

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JK-NY

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Brian Jasper co. Ia

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