i have a 4wd trialblazer that makes a scraping sound from the front end.

2002 CHEVROLET TRAILBLAZER
129,000 MILES
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WEEDMAN
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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
Nov 9, 2011 at 9:00 PM
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ASEMASTER6371
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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
Nov 9, 2011 at 10:23 PM