[Canyon08Z71]

Douche here, reporting in for internet trouble shooting, sir. :gheyw:

Do this check:

Disconnect that mushroom filter, leave the stub off the valve cover exposed. Start the truck and place your finger over the valve cover stub. Is it sucking in or blowing out? Repeat this test with the engine rev'd to 2k (be safe.. don't get caught in any moving parts and torn up). What did you find?

 

[reaching.nulowz]

here to report findings sir :lmao:

it blows, but i already knew that

 

[Canyon08Z71]

here to report findings sir :lmao:

it blows, but i already knew that

:lmao: ... Seriously, you have a problem with your truck. There should not be pressure there... There should be vacuum at all times.

* Test for vacuum at the positive crankcase ventilation (PCV) dirty air hose (2) where it connects to the vacuum orifice tube (5) in the camshaft cover. There should be manifold vacuum present at the hose (2). If there is no vacuum, inspect for a plugged hose, leaking hose or a plugged intake manifold passage.
* If oil has accumulated in the air cleaner resonator (1), inspect for the following conditions:
o Plugged vacuum orifice tube (5) in the camshaft cover
o Plugged, restricted, or leaking PCV dirty air hose (2)
o Plugged or restricted intake manifold passage (3)
o Excessive crankcase pressure or blow-by, refer to Engine Compression Test
* Additional items to inspect:
o Plugged or restricted vacuum tube (4) in the camshaft cover
o Plugged or restricted PCV fresh air hose (6)
o Plugged or restricted passage in the air cleaner resonator (1)
o Inspect the cam cover, the oil pan, engine front cover, and other sealing areas for leaks

Results of Incorrect Operation

A plugged crankcase ventilation system may contribute to the following conditions:

* A rough idle
* Stalling or a slow idle speed
* Oil leaks
* Oil accumulation in the air cleaner resonator (1)
* Sludge in the engine

A leaking hose may contribute to the following conditions:

* A rough idle
* Stalling
* Unstable idle speed

The crankcase ventilation system has no serviceable components so no maintenance of the system is required.

 

[reaching.nulowz]

why did it not throw the code until i put the intake on? i thought the intake pulled the air out of the valve cover stub. the truck runs fine just has a CEL

 

[reaching.nulowz]

my truck doesn't have #2 on that diagram i think that pic and info is for an older model i have an 08

 

[reaching.nulowz]

should i just put my stock shit back on? how can i clear my code without a code scanner?

 

[Canyon08Z71]

why did it not throw the code until i put the intake on? i thought the intake pulled the air out of the valve cover stub. the truck runs fine just has a CEL

The OEM resonator must have been holding that vent line on? Is there any oil accumulation on the OEM resonator (where the line connects up to)? The intake supplies fresh air to that nipple.

my truck doesn't have #2 on that diagram i think that pic and info is for an older model i have an 08

You should have the same system as shown in the diagram... This is showing you the OEM system, not your new intake.

should i just put my stock shit back on? how can i clear my code without a code scanner?

Yes, put the stock system back on for now. The truck is running too lean because it is not accounting for the excess air entering the engine... You need to find the problem with your PCV system. There must be an obstruction in the intake manifold side (guess since I am not there to inspect it).. Have GM look at it since you are under warranty.

You can clear the code by pulling the negative battery cable for a minute.

 

[NWZQ8]

why did it not throw the code until i put the intake on? i thought the intake pulled the air out of the valve cover stub. the truck runs fine just has a CEL

sorry i didn't read much of this but did you disconect the battery when you put the intake on? im going out to look at one right now brb

 

[NWZQ8]

:lmao: ... Seriously, you have a problem with your truck. There should not be pressure there... There should be vacuum at all times.

The crankcase ventilation system has no serviceable components so no maintenance of the system is required.

just curious but where did you get that from

 

[reaching.nulowz]

The OEM resonator must have been holding that vent line on? Is there any oil accumulation on the OEM resonator (where the line connects up to)? The intake supplies fresh air to that nipple.



You should have the same system as shown in the diagram... This is showing you the OEM system, not your new intake.



Yes, put the stock system back on for now. The truck is running too lean because it is not accounting for the excess air entering the engine... You need to find the problem with your PCV system. There must be an obstruction in the intake manifold side (guess since I am not there to inspect it).. Have GM look at it since you are under warranty.

You can clear the code by pulling the negative battery cable for a minute.

no

it's a little different looking

i think maybe its because there was no bottleneck on the intake where the MAF is?

thanx on the code clearing.

 

[NWZQ8]

I must be thinking of a driffrent hose or you have something really wrong because the hose im thinking of shouldn't have any pressure in it at all.

 

[reaching.nulowz]

WOOT! i think i figured it out, i put the stock bottleneck in and the problem went away.