I took my truck to the dealer today to see where some oil was leaking from under the hood. They said it was leaking from the turbo vent tube. The truck just hit 36k miles. They are going to fix it no problems, but was wondering what could of caused it or if anyone else had this same issue.

Thanks

never heard of a "turbo vent tube"..... how about a picture

Got me. That is what they said. They need to replace the gasket because oil was leaking out the turbo vent tube. I would take a pic, but its dumping down the rain and I would have to actually find the leak myself. I have no idea, just noticed oil under the truck. Make you say, HUMMMM! thanks.

Got me. That is what they said. They need to replace the gasket because oil was leaking out the turbo vent tube. I would take a pic, but its dumping down the rain and I would have to actually find the leak myself. I have no idea, just noticed oil under the truck. Make you say, HUMMMM! thanks.

Sounds like the egr pipe. major problem with the egr duramax's

if they mean the "oil drain" then that is the only place on the turbo that has oil running through it and has a gasket.

I have never heard of a turbo vent tube either.
How much oil was there on the ground ?
Do you have much oil seeping out and dirt collecting on the blue hoses from turbo to intercooler where the clamps are ??
Mine was getting pretty messy with only 12K on the engine, but not to where it was leaking oil.

If so, it could possibily be caused from the Possitive Crank case Ventilation re-circulating oil vapors back thru the turbo intake.
The burnt oil vapors mixes with the fresh air and fuel, which eventually the oil vapors gums up everything in its path including the turbo.

Some people do the PCV re-route, which eliminates that, then the engine has only fresh air mixing with the fuel.
This makes for a all around much cleaner burning engine, egr and exhaust.

Is the PCV mod "covered" by warrenty?

umm i would say no seeing as it is a tampering with emissions equipment which is a federal crime.

you mean we could all go to jail, just those who remove the "Do not remove tag" from matresses? lol

No it's not covered, but you can easily return the system back to the way it was without doing much. My setup would take me about 5 min. max to switch back to the stock PCV setup, if I had issues. Chris

#09-06-93-001: Engine Oil Leaks from Charge Air Cooler and Turbocharger Air Inlet Ada

--------------------------------------------------------------------------------


Service Information




2007 Chevrolet Silverado - 4WD | Sierra, Silverado (VIN C/K) Service Manual | Bulletins By Category | Technical | Document ID: 2272600
--------------------------------------------------------------------------------

#09-06-93-001: Engine Oil Leaks from Charge Air Cooler and Turbocharger Air Inlet Adapter (Replace Clamp and/or Turbo Inlet Duct/Pipe) - (May 5, 2009)



Subject: Engine Oil Leaks from Charge Air Cooler and Turbocharger Air Inlet Adapter (Replace Clamp and/or Turbo Inlet Duct/Pipe)


Models: 2004-2010 Light and Medium Duty Trucks Equipped with Diesel Engines

2010 and Prior Chevrolet Kodiak, Silverado Equipped with Engine RPO - LLY, LBZ or LMM Diesel

2010 and Prior GMC Sierra, TopKick Equipped with Engine RPO - LLY, LBZ or LMM Diesel

Please Refer to GMVIS




--------------------------------------------------------------------------------
Condition

Some customers may comment on an engine oil leak from the rear of the engine near the flywheel housing. Upon further investation, a technician may find oil in the charge air cooler or turbocharger air inlet adapter.
Cause

Note: Oil found in this system is very rarely an indication of a turbocharger failure.
This condition may be caused by a loose clamp at the inlet duct/pipe located on the turbocharger. Oil may carry over from the PCV system and leak out the turbo inlet duct/pipe.
Correction

Note: Do not replace the turbocharger if oil is found in the charge air cooler pipes.
Important: When replacing the clamp, tighten the clamp to 5 N·m (41 lb in), then loosen and re-tighten to 5 N·m (41 lb in).
OIL LEAK FOUND AT CHARGE AIR COOLER OUTLET (HOT SIDE)

Clean the rubber duct hose with soapy water and allow to dry. Apply a thin bead of high temperature RTV silicone sealant to the turbocharger compressor outlet port and CAC duct connections. Tighten the clamps to 8 N·m (70 lb in).
OIL LEAK FOUND (Full-Size Pickup Trucks - Silverado and Sierra)

Replace the turbo inlet duct/pipe and clamp with P/N 98011738.
OIL LEAK FOUND (Vans and Medium Duty Trucks)

Replace the air intake clamp with P/N 97376379. Refer to Air Intake Pipe Replacement in SI.
Parts Information

Note: Do not replace the inlet adapter/duct on vans and medium duty trucks - only replace the clamp.
Part Number
Description

98011738
Duct, Turbo Inlet (Silverado and Sierra Only)

97376379
Clamp, Turbo Exhaust Pipe

Warranty Information

For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time

J5793
Pipe, Charge Air Cooler Inlet - Replace
Use Published Labor Operation Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION


© 2009 General Motors Corporation. All rights reserved.

I had that done and it still didn't fix the leak. Had it at the dealer twice. Only thing that worked was the PCV reroute and haven't had the problem since. My dealer knows about it and doesn't care as long as it isn't throwing any codes.

So you can do a PCV reroute and the truck won't throw any codes?

So you can do a PCV reroute and the truck won't throw any codes?


No codes at all.;)