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I have a 4WD trialblazer that makes a scraping sound from the front end.

Tiny
WEEDMAN
  • MEMBER
  • 2002 CHEVROLET TRAILBLAZER
  • 129,000 MILES
General service has been done [shocks, struts, brakes, tires]recently. Noises started about 6 months ago with a farting sound [changed struts&shocks]no help. This noise went away now a new one, grinding. Thought it was sealed hub [had one go bad on my 1500]not this. Now a new noise scraping. No apparent play in axle shafts. Put in 4 low walked next to to maybe determine noise location, sounds like could be coming from front diff. Rengaged 2 high
scraping went away.I know something is going out any ideas?


Thanks, Mike
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Wednesday, November 9th, 2011 AT 9:00 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
From your description, either the transfer case has an issue or the drive shaft may be rubbing up against something. Take a good look underneath and make sure nothing is hitting anything that rotates.

A common issue is the backing plates rubbing on the rotors. Easy to push away.

Roy
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Wednesday, November 9th, 2011 AT 10:23 PM

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