2007 Avalanche has high oil consumption fixed by TSB

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Jul 4, 2018 | 12:40 PM

toomuchjunk

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2007 Avalanche has high oil consumption fixed by TSB

I have a 2007 Avalanche that has drivers side valve cover vent/pcv hole blocked. Was able to clear with oven cleaner (best degreaser). Due to poor design I am sure it will plug up again. Here is the jest of this post --original valve cover has the vent opening right on top of spring/lifter and sucks oil up into baffle. New design has vent opening at end of valve cover and not on top of an oil squirting lifter. I can not stomach over $100 for a new valve cover and would like to modify cover I have to act like replacement. Take my cover cut vent opening at end and cover factory vent with thin metal and 2 pop rivets. To me the calibration specification is already determined by hole size in nipple where hose from intake manifold hooks to valve cover. GM 12570427 Valve Rocker Arm Cover https://gm.oemdtc.com/683/engine-oil-consumption-engine-oil-consumption-on-aluminum-blockiron-block-engines-with-active-fuel-management-afm-2007-2015-cadillac-chevrolet-gmc-pontiac