2006 Yukon, 5.3L - OIL CONSUMPTION

[JochenWoern]

Nope, nothing wrong with the engine itself at all. Just continue getting regular oil changes and check it every so often and you'll be fine.

Now that's a relief.

 

[ScottyBoy]

I was burning at least a quart every 4500-5k miles. GM claims this is still in the "normal" range. WTF? I did some research online and found out about the PCV valve issue on the 99-02 trucks, so I bought a new style valve from the dealer for 7 bucks. Its a fixed orifice style, the old style has a moving valve in it. If you shake it you can hear it rattle. ALL the PCV valves I saw at the parts store were the rattle style. Anyways, the fixed orifice valve solved my oil consumption issues. Now I go 10k miles (with Amsoil) and barely use a half a quart.
I would double check you PCV valve, if its the rattle style replace it with the fixed orifice style from a GM dealer. Just pop if off and shake it. If it rattles, then replace it.

 

[Rivieraracing]

I was burning at least a quart every 4500-5k miles. GM claims this is still in the "normal" range. WTF? I did some research online and found out about the PCV valve issue on the 99-02 trucks, so I bought a new style valve from the dealer for 7 bucks. Its a fixed orifice style, the old style has a moving valve in it. If you shake it you can hear it rattle. ALL the PCV valves I saw at the parts store were the rattle style. Anyways, the fixed orifice valve solved my oil consumption issues. Now I go 10k miles (with Amsoil) and barely use a half a quart.
I would double check you PCV valve, if its the rattle style replace it with the fixed orifice style from a GM dealer. Just pop if off and shake it. If it rattles, then replace it.

Didn't know there was a different PCV valve you could get, I'm gonna have to go to the stealership tomorrow and see what they can provide for me! Thanks Scotty!!

 

[JochenWoern]

Didn't know there was a different PCV valve you could get, I'm gonna have to go to the stealership tomorrow and see what they can provide for me! Thanks Scotty!!

And now the dumb question: Where is the PCV Valve located at and what does it look like? What does PCV stand for?

When at the Stealership, you think you can get the part number of that for me on my '06?

Thanks.

 

[ATL]

the pcv is on back of motor on drivers side. theres a big vacuum line coming off drivers side of intake and running back to the rear of drivers side cylinder head. it stands for positive crankcase ventilation

 

[01Konvict]

Ive run mobil 1 synthetic since 3500 miles and now over 180,000 it has burned a quart per 5k from new til present. Ive switched to shell rotella t6 and i will monitor it during this 5k.

 

[ScottyBoy]

Yeah its just popped into a breather hose on the rear drivers side. Takes a minute to pop it off and shake it to see if it rattles. At most you might need a flathead screwdriver to pry it out if the hose is stubborn.

 

[Rivieraracing]

Scotty, that revised PCV valve, is it a updated valve for our trucks or is it actually for a different vehicle but has a better design? I'm going up to the dealership after I work out this morning but wanted to have a bit more info in case I get the deer caught in the headlight look!

 

[Rivieraracing]

Just got back from the stealership and they show a PCV valve that also includes a built on hose as apart of the PCV valve, was yours like that Scotty? Also figures, they are out of stock on them and they want $16.11 for theirs!!

 

[JochenWoern]

Just got back from the stealership and they show a PCV valve that also includes a built on hose as apart of the PCV valve, was yours like that Scotty? Also figures, they are out of stock on them and they want $16.11 for theirs!!

Chris,
When you purchase, would you please be so kind and and provide the part number?

Thanks in advance.