[racer37]

2006 Sierra with 5.3L.150,000 miles. Buring about 1.5 qts of oil every 4k miles. Running Mobil I. Should I be worried? Anything I can do? Thanks!

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[Graystone]

That is about normal.

Do you have the updated valve cover?

 

[2005_Silverado]

"normal" per GM

 

[racer37]

That is about normal.

Do you have the updated valve cover?

Updated valve cover? I knew 08 and up have updated valve cover.

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[Mr. 960]

Sounds about right. Maybe a wee bit on the higher side, but still not alarming for the miles you have.

Mr. 960

 

[Graystone]

Updated valve cover? I knew 08 and up have updated valve cover.

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06 pcv valve is integrated in the valve cover and is usually the main cause of the consumption. My l33 went through about 1.5 qts every 6k miles.

 

[06GMC5.3L]

Any fix to the 06 PCV issue?