2003 Chevy Trailblazer noise

Tiny
BRUISEDKNUCKLES
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 90,673 MILES
This vehicle makes a noise at the right front. I thought it was tires, I bought new ones. Still makes noise. I jacked the car up and set on jack stands, and then drove. The right front tire did not turn, no noise. So I thought it was the wheel bearing, I put new wheel bearing on. Still makes noise. What can this be?
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Sunday, April 12th, 2009 AT 1:36 PM

9 Replies

Tiny
JAMES W.
  • MEMBER
Have you checked the outboard axle joints?
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Sunday, April 12th, 2009 AT 6:28 PM
Tiny
BRUISEDKNUCKLES
  • MEMBER
The only thing I've done to check the axle was to try to shake it to see if the was any movement
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Sunday, April 12th, 2009 AT 7:55 PM
Tiny
JAMES W.
  • MEMBER
Shaking these joints can be decieving. What you're looking for is rotational movement. If there any slop at all between the 2 halves of the joint as you turn the wheel, the joint is probably bad.


http://www.2carpros.com/forum/automotive_pictures/248092_03_trailblazer_axle_1.jpg



http://www.2carpros.com/forum/automotive_pictures/248092_03_trailblazer_axle_1_1.jpg

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Sunday, April 12th, 2009 AT 8:43 PM
Tiny
BRUISEDKNUCKLES
  • MEMBER
I have removed the axle and the inner bearing seems to be a little loose. Should this bearing be tight?
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Sunday, April 19th, 2009 AT 10:50 AM
Tiny
JAMES W.
  • MEMBER
Obviously, I'm not sure what you mean by "a little loose", but as a rule, an inner (inboard) joint won't make any noise unless it's "really" shot. Inner's don't flex as much as the outboard units. You may want to check "slop" in the front differential. The input shaft should have only 2 or 3 drgrees of freeplay before making contact with the ring gear. Turning the axle shafts, they should have have almost no slack.
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Sunday, April 19th, 2009 AT 1:05 PM
Tiny
BRUISEDKNUCKLES
  • MEMBER
I'm sorry for not being more clear about what I was talking about, I was saying the inner bearing with the splines that the axle shaft is slid into being a little loose. I don't know if this is normal or not. I suspect not.
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Sunday, April 19th, 2009 AT 1:35 PM
Tiny
JAMES W.
  • MEMBER
The picture I attached previously is of the "inner" joint. They are basically the same except the outer is a male spline, the inner is female. For the inner "female" part of the shaft to move up and down a little is not uncommon, as long as it moves so much that the seal is leaking.
Question; Do you, perchance, have a lift kit in this truck? Is the truck used quite a bit "off road"?
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Sunday, April 19th, 2009 AT 5:19 PM
Tiny
BRUISEDKNUCKLES
  • MEMBER
Again I guess I didn't explain it right. I have removed the axle. I have a new axle to install on the truck, but the axle bearings that remain near thye differential are the ones I have concern about. The inner one seems to move what seems like a little to much and seems a little rough. Makes a slight noise when I move it with my finger. I just don't know how much movement this inner bearing should have.
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Sunday, April 19th, 2009 AT 7:57 PM
Tiny
JAMES W.
  • MEMBER
Ok, I think we're on the same page. There were 2 different front differentials used in you truck. One had a "slip clutch" system, the had a mechanical lock controlled by a vacuum actuator. Which front end do you have and which bearing are you looking at. Just give me the #, and we can go from there. I'm being cautious here 'cause I don't want to give you the wrong info.


http://www.2carpros.com/forum/automotive_pictures/248092_blazer_1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/248092_blazer_2_1.jpg



http://www.2carpros.com/forum/automotive_pictures/248092_blazer_3_1.jpg



http://www.2carpros.com/forum/automotive_pictures/248092_blazer_4_1.jpg

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Sunday, April 19th, 2009 AT 11:30 PM

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