4WD scraping when straightening from turn - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > 4x4 Drivetrain

4x4 Drivetrain 4x4 Repairs & Problems

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  #1  
Old 01-12-2019, 08:58 PM
dscrawford14 dscrawford14 is offline
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2006 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 4X4
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Location: Truckee, CA
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4WD scraping when straightening from turn

Hey guys,

Doing my best to keep my 2006 4.6L V6 2006 Trailblazer alive, she's got 232.5k on her. Most recently I've found that there seems to be a metal on metal sounding scraping/grinding noise when I'm in 4WD. It does not happen in 2WD, and in 4WD only seems to occur when the wheel straightens out from a turn.

Any suggestions on how to troubleshoot, what to look for, or any further information I can provide to help get to the bottom of this repair?

Thanks in advance!
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  #2  
Old 01-13-2019, 12:03 PM
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Lynch Lynch is offline
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Check front diff fluid. Glitter is bad
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  #3  
Old 01-13-2019, 12:04 PM
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Lynch Lynch is offline
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Is there something stuck under the car rubbing front driveshaft?
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  #4  
Old 01-13-2019, 12:17 PM
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Lynch Lynch is offline
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Could be cv axle
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  #5  
Old 01-17-2019, 04:45 PM
dscrawford14 dscrawford14 is offline
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2006 Chevy TrailBlazer LS
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Join Date: Feb 2018
Location: Truckee, CA
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Quote:
Originally Posted by Lynch View Post
Check front diff fluid. Glitter is bad

Turns out it's the front differential. Was dry and had some glitter. Damn...

Looking at procedures and kits to repair now, seems like a do-able at home repair with the right tools.

Casing should be good, just the innards that would need replacing, right?

-DC
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Old 01-17-2019, 04:52 PM
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Lynch Lynch is offline
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Quote:
Originally Posted by dscrawford14 View Post
Quote:
Originally Posted by Lynch View Post
Check front diff fluid. Glitter is bad

Turns out it's the front differential. Was dry and had some glitter. Damn...

Looking at procedures and kits to repair now, seems like a do-able at home repair with the right tools.

Casing should be good, just the innards that would need replacing, right?

-DC
I would hit a salvage or buy refurbished differential. You will most likely have to completely remove it either way. And enless you have proper tools and experience with differentials you may cause more damage.
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  #7  
Old 01-23-2019, 11:36 PM
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Cuvkiller Cuvkiller is offline
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2004 GMC Envoy SLT
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When was the last time your transfer case fluid was changed? I remember when I had problems with my 4x4, as soon as I changed the fluid, everything worked beautifully.
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  #8  
Old 01-24-2019, 01:30 AM
dscrawford14 dscrawford14 is offline
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2006 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 4X4
Join Date: Feb 2018
Location: Truckee, CA
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Quote:
Originally Posted by Cuvkiller View Post
When was the last time your transfer case fluid was changed? I remember when I had problems with my 4x4, as soon as I changed the fluid, everything worked beautifully.
I got it looked at by some with more knowledge than me, it was differential fluid that was the culprit. Nothing broken they said, but probably need to get it looked at. Going to try and do the work myself soon, until then I have a 2WD vehicle...
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