Question about Chevrolet Impala

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I HAVE A 2001 IMPALA LS V6 3800. IT IS MAKING A GRINDING NOISE WHEN I DRIVE IT. THE GRINDING NOISE SEEMS TO GO AWAY WHEN I TURN TO THE LEFT. WHAT COULD IT BE ?

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  • DAN DUPREE Oct 17, 2010

    I HAVE A 2001 IMPALA LS. IT IS MAKING A GRINDING/HUMMING NOISE WHEN I DRIVE IT. ALL THE BRAKE PADS ARE NEW ON ALL 4 WHEELS. WHEN I DRIVE IT, IT SEEMS WHEN I TURN THE WHEEL SLIGHTLY TO THE LEFT, THE NOISE SOMEWHAT SUBSIDES. I AM AWARE THAT I CAN NOT JUST REPLACE THE BEARINGS--I HAVE TO REPLACE THE WHOLE HUB ASSEMBLY IF THAT IS THE PROBLEM. HOW CAN I TELL IF THE PROBLEM IS THE HUB ASSEMBLIES OR THE CV JOINTS, AND IN EITHER CASE--WHICH WHEEL WOULD IT BE ?

  • DAN DUPREE Oct 17, 2010

    YES, I KNOW IT IS EITHER THE CV'S OR THE HUB BEARINGS---BUT HOW DO I TELL WHICH ONE IT IS, AND WHICH WHEEL ? --YES, I CAN FEEL IT IN THE STEERING WHEEL--WHEN I TURN THE WHEEL SLIGHTLY TO THE LEFT--THE NOISE GETS QUITER--I AM PRETTY SURE IT IS IN THE FRONT END--I CAN FEEL IT IN THE WHEEL--BUT I'M NOT SURE WHICH SIDE. I DONT HEAR ANY CLUNKING WHEN I PUT IT IN GEAR--OR GO FROM DRIVE TO REVERSE----THE ABS LIGHT WAS ON CONSTANTLY--SO I WIGGLED THE WIRES ON BOTH SIDES--NOW THE ABS LIGHT IS OFF---BUT THE NOISE IS STILL THERE

  • DAN DUPREE Oct 17, 2010

    I HAVE A 2001 IMPALA LS. IT IS MAKING A GRINDING/HUMMING NOISE WHEN I DRIVE IT. I CAN FEEL IT IN THE STEERING WHEEL, SO IM PRETTY SUR IT IS IN THE FRONT END. WHEN IM DRIVING, AND TURN THE WHEEL SLIGHTLY TO THE LEFT, THE NOISE GETS QUITE. I AM NOT SURE IF IT IS THE CV JOINT, OR THE BEARING HUB. CAN YOU TELL ME HOW TO FIGURE OUT WHICH ONE IT IS, AND POSSIBLY WHICH SIDE IT MIGHT BE ?

  • DAN DUPREE Oct 17, 2010

    ARE YOU SURE IT IS THE LEFT-----BECAUSE SOMEONE TOLD ME IT WAS THE RIGHT--AND WHEN I PUT A LOAD ON THE RIGHT--IT QUIETS DOWN---HOW SURE ARE YOU ?

  • DAN DUPREE Oct 17, 2010

    IS IT POSSIBLE YOU COULD RUN ME THRU THE PROCEDURE FOR REMOVING AND REPLACING--AND IF SO, DO YOU HAVE ANY SPECIAL TIPS---I DON'T HAVE A WHEEL PULLER--WILL THAT MAKE IT UN-DO ABLE ? OR ARE THERE WAYS AROUND IT ?

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4 Answers

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  • Master
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When turning left and it quiets down usually indicates that it is the left side wheel bearing. If turning right and it gets louder would indicate the left as well. One way that I use as an indiactor would be getting the front of the vehicle off the ground and supporting it on jackstands on the engine cradle?frame unless you have a hoist available. Unplug one of the abs sensors just to deactivate traction control unless you have a traction control button you can turn off. Start the vehicle and put it in drive then with a stethoscope or long scredriver crawl underneath the vehicle and place the screwdriver or stethoscope on the hub bearing assembly avoiding the moving parts. You will definitely be able to tell which one is making the grinding noise.From your description would probably say LF but acassionally I have the sound travel across the front end. While its on the jackstand before crawling underneath or starting you can shake the tire up and down and check for movement in the wheel bearings .

Posted on Oct 17, 2010

  • Jonathan S
    Jonathan S Oct 17, 2010

    Once you determine which wheel bearing remove that side tire. You wheel need to remove the axle nut which should be a 34 or 36 mm socket. Do this first if you are not using an impact gun to remove the axle nut that way someone can apply the brakes and hold it in place while you break it loose. Next remove the caliper cradle which is held in place by 2 15mm bolts.Once that is off remove the brake rotor. Now at this point unplug the abs wire running to the wheel bearing. Next make sure the axle is free of the hub bearing by pushing on it to see if it will push in some. If it is stuck use an air hammer and punch in the center of the axle if an air hammer is not available to you use a dead blow hammer or a block of wood and and hammer to jar the axle loose.The back side of the hub bearing has 3 13mm bolts holding it in place.Once these are removed the bearing should slide right out unless corrosiosion has built up.In that case you will pssibly need a slide hammer or just hammer the hub.You can use penetrating oil and let that work in ti see if it will help loosen the bearing. Just reverse the process to reinstall.If corrosion is a factor take some sandpaper and clean out the the the hole where the bearing installs to the steering knucle this should ease installation.

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  • Master
  • 2,841 Answers

You have a defective left wheel bearing. When you turn to the left you take the load off that bearing causing it to quieten down. You need to have this repaired immediately as the bearing can seize and cause you to loose control of your car causing an accident.

Posted on Oct 17, 2010

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  • Chevrolet Master
  • 1,420 Answers

Welcome to FIxYa.com

Sounds like you have a bad outer cv joint have them checked out. also check hub bearings

Question -do you feel it in the steering wheel ?

Where is the noise coming from ?



Regards, Lee Davidian


A Four Thumbs up ^^^^ is appreciated for answering your question. And please take the time to rate me by leaving a testimony. Thank you, Lee Davidian

Posted on Oct 17, 2010

  • Auto Repair Help
    Auto Repair Help Oct 17, 2010

    jack up the entire front end have some one get in and start car and put into drive while you go under neath and scope out the problem

  • Auto Repair Help
    Auto Repair Help Oct 18, 2010

    Let me know what you find and shake the wheels ae they are off the ground for Play

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  • Master
  • 11,896 Answers

That could be a dry wheel bearing that is lacking grease. Or it could be brakes rubbing if the havent' been changed and are not worn evently

Posted on Oct 16, 2010

  • Nate Stansfield
    Nate Stansfield Oct 17, 2010

    Hub bearings would be heard all the time even driving straight. Axles click or clunk when turning.

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