Question about 2005 Chevrolet TrailBlazer

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Our 2005 Trailblazer has started to make a strange noise somewhere in the right front wheel area. I jacked the car up and checked the C/V joints, the wheel is tight, the brakes seem fine. When I was jacking the car, the spring/shock squeaked some when loaded and unloaded. For a day after, the noise went away but has returned. I thought maybe it was the shock, but the noise doesn't only happen on bumps, it sounds like it might be coming from a rotating area. It sounds almost like something is rubbing, but I couldn't find anything. Any thoughts?

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Most likely the wheel bearing, outer tie rod or ball joint

when the noise returns, slightly steer left and right quickly to see if the noise changes

if this works then the wheel bearing that needs replacement is opposite the direction you steer

Posted on May 11, 2010

  • 3 more comments 
  • christoph325 May 11, 2010

    I thought about the wheel bearings and tie rods. When I had the car on the jack I checked the suspension parts and everything seemed tight. I grabbed the wheel with it tight on the studs and it seemed tight too. I went out and drove the car normal and then I drove it hard. I rocked the car back and forth pretty aggressively and got nothing. I noticed that the noise sounds like something rubbing, but I didn't see any wear marks anywhere. Mostly the noise comes when accelerating and slowing down, somewhere between stopped and 20-25 mph, though it sometimes happens when we hit a bump. Also, when I had the wheel off, I noticed that the holes in the brake rotor has a little gapping around the wheel studs. I didn't check the other wheels, but it looked like it was manufactured that way, but maybe that will help some. I will go out and drive the car again and try the idea for the bearings, but maybe this will give you more info to help me out. Thanks for your help.

  • Sean Reisdorf
    Sean Reisdorf May 11, 2010

    have also replaced a few control arms because of bushing issues

    "holes" in rotor are "performance" aftermarket rotors
    assuming there is more than just one hole and assuming the hols are in the friction surface area

  • christoph325 May 11, 2010

    Sorry, that wasn't a very good description. They aren't aftermarket or performance rotors. The holes I was talking about were the holes that the studs go through to mount the rotor on the hub. The holes don't seem to be elongated, so I'm thinking that they are supposed to be that way, but there is a little play around the studs. When I have the wheel off, I can move the rotor a small amount before the studs move. I am guessing that this just keeps from putting too much stress on the studs, but it wasn't something I've noticed before, so I'm just trying to give any info that could possibly be helpful.

    I am going out now to drive the car and see if I can get any more information to give. When I get back, I will come back and check this site again. Thanks again.

  • Sean Reisdorf
    Sean Reisdorf May 11, 2010

    no, no, no.... I have never seen the lug holes in a rotor elongated
    I can only assume that somewhere down the line the lug nuts were loose

    Check the other side ASAP
    I bet you will find no elongated holes there

    keep the updates coming

  • christoph325 May 11, 2010

    They don't seem elongated, just bigger than the studs themselves. It adds up to maybe 1/8 of an inch play or so. I'll check the other side and see what it looks like.

    I went and drove the car and it was making the noise more than it has. I tried the turning the wheel idea and there was no change either way. I stopped and was looking at it. When I leaned on the fender, I put some weight on it and heard the noise, so I started to push the car up and down on that side and the squeaking noise happened more. I definetly sounds like it is in the suspension, probably in the shock. I did notice that today is cooler than it has been and I was thinking that when the noise happens more it is cooler than when it doesn't. It seems like the strut is causing the squeak. Like I said, all the tie rods and other suspension parts seem tight and the noise comes when I'm loading/unloading that side of the car.

    If it is the shock, how hard is that to replace? I worked in a repair shop for a while, but I never messed with shocks and I think I remember the techs needing special tools to do it. Is that something I can do at home, or do I need to take it to a shop to get this done?



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