Question about 2004 GMC Envoy

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Exessive oil concumption on 2001 6 liter chev

I have 60,000 miles on this engine. it started using oil at 55,000 up until then I did not have to add oil in between oil changes. There is a lot of talk that GM has problems with these motors. I checked the spark plugs and there is no oil foling they are very clean. There is no visable external leaks. Is it possible to have a intake manafold leak? There is a lot of talk on this problem, any ideas on this problem any help on this is greatly apreaceated

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The intake manifold will cause oil to disappear,but the compression will not be even on all the cylinders if that is the case.have a compression test done,and a vacuum leak test.

Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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