2005 Trailblazer transfer case leaking fluid - 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 07-14-2010, 07:50 AM
edogwv edogwv is offline
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2005 Trailblazer transfer case leaking fluid

Hi there, just noticed the 2005 Trailblazer I6 w/ around 82k miles is leaking fluid from the transfer case. Still trying to determine exactly where it's leaking, but appears to be forming around the middle of the case (where the seal is) or possibly from the front output shaft and just flowing back.

Fluid was changed around 50k miles, what are your thoughts?
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  #2  
Old 07-14-2010, 10:09 AM
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First emergency thing to do is check the level - see how much you've lost. It's almost cheaper to install a junkyard TC than remove and break the case apart to reseal the one you have, if that's it.
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  #3  
Old 07-14-2010, 12:59 PM
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Could you please private message me with your contact information and the VIN of your vehicle so I can look into this further for you?

Angie GM Customer Service
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  #4  
Old 07-15-2010, 02:18 PM
edogwv edogwv is offline
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Thanks Angie, I sent along the VIN number. Let me know if you can conclude anything.

The machine actually has 85k instead of 82k, still seems awful early for a seal to be wearing out.
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  #5  
Old 07-20-2010, 12:07 AM
russell russell is offline
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having same problem with 05 tb

just noticed tonight leaking from transfer case area.
Only have 70k on this, just cant imangine having seal problems allready!!
Any ideas on this??
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Old 07-21-2010, 02:20 AM
TBSTB TBSTB is offline
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On my 04 Trailblazer, my driver side axle seal started leaking at 100,000 miles. It wasn't an expensive fix fortunately. You better hope it doesn't happen on the passenger side seal, the entire axle has to be removed to get to it. The extra labor involved will easily double the cost. Maybe you can do it yourself?
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Old 07-21-2010, 08:38 AM
edogwv edogwv is offline
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TBSTB: what does that have to do with this thread?

To follow up on my experience: I contacted the local dealer and explained that I was seeing fluid leaking from the middle of the trans case... He mentioned this was fairly common and should run in the neighborhood of $300 - $400 to drop the transfer Case, crack it, and replace the seal.

After dropping it off with the dealer, I got a call from them that what I was seeing was actually fluid leaking from a vent tube from the transmission (I believe above the transfer case). It was diagnosed as the transmission building internal pressure, quoted $3000 for a rebuild, or $3500 for a new transmission with warranty. (After some reading about the fluid types, red for Transmission, blue for T-case may have helped identify this (but not solve) quicker)

I told him I woiuld think things over and stopped down to pick up the vehicle, they charged me $80 for an hours worth of labor.

Has anyone been in this situation with the transmission and what are your thoughts on the transmissions building internal pressure in these models?

2005 Trailblazer I6 with 85k miles
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  #8  
Old 07-21-2010, 09:25 AM
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Quote:
Originally Posted by edogwv View Post
TBSTB: what does that have to do with this thread?

To follow up on my experience: I contacted the local dealer and explained that I was seeing fluid leaking from the middle of the trans case... He mentioned this was fairly common and should run in the neighborhood of $300 - $400 to drop the transfer Case, crack it, and replace the seal.

After dropping it off with the dealer, I got a call from them that what I was seeing was actually fluid leaking from a vent tube from the transmission (I believe above the transfer case). It was diagnosed as the transmission building internal pressure, quoted $3000 for a rebuild, or $3500 for a new transmission with warranty. (After some reading about the fluid types, red for Transmission, blue for T-case may have helped identify this (but not solve) quicker)

I told him I woiuld think things over and stopped down to pick up the vehicle, they charged me $80 for an hours worth of labor.

Has anyone been in this situation with the transmission and what are your thoughts on the transmissions building internal pressure in these models?

2005 Trailblazer I6 with 85k miles
My first task would be a new filter, fluid exchange with Dex-VI (lower viscosity) and a cooler.
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  #9  
Old 07-21-2010, 11:10 AM
edogwv edogwv is offline
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Thanks for your help.. Do you have any suggestions for the transmission cooling unit? what type, where to find, etc


I'm not sure yet if this fluid is leaking from the vent tube but I did find this for issue / possible repair on the Transmission

"Symptom: Fluid pumped out through the vent tube Issue: Plugged cooler line. Possible Fix: Flush the Transmissionmission cooler and cooler lines. Also could be overfiled Transmission. "


Also one transmission cooler line does look fairly rusty-
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Old 07-21-2010, 11:39 AM
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Quote:
Originally Posted by edogwv View Post
Do you have any suggestions for the transmission cooling unit?
Many of us use Haydens. Run a search here for that brand name.

Quote:
Originally Posted by TBSTB View Post
On my 04 Trailblazer, my driver side axle seal started leaking at 100,000 miles.
Not part of the transfer case or transmission.
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