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October 1, 2010 Service bulletin

Cadillac/chevrolet/gmc/pontiac: engine oil consumption on aluminum block engines with active fuel...

Chevrolet technical service bulletin SB-10-06-01-008 for 2007-2008 Chevrolet Silverado 1500, 2007-2008 Chevrolet Tahoe and 2007-2008 GMC Sierra 1500 and others.

Bulletin number
SB-10-06-01-008
Component
Engine and engine cooling: engine
Summary
Cadillac/chevrolet/gmc/pontiac: engine oil consumption on aluminum block engines with active fuel management (afm) (install afm oil deflector and clean carbon from cylinder). Caused by an uncovered afm valve that sprays oil on the bottom of the cylinders when the vehicle is in four cylinder mode.

Owners of these vehicles have filed 548 complaints in the engine category.

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