GMC Sierra owners have reported 4 problems related to engine burning oil (under the engine and engine cooling category). The most recently reported issues are listed below.
5. 3 vortec with afm is now burning oil at the rate of 1 qt every 800-1200 miles. The more highway driving the more oil it burns. Gm is very aware of the issue and just refuses to make the proper repairs volunteerly, but is more than happy to put the customer through all kinds of bs. Will start the oil consumption test, tomorrow. If that fails the dealer told me they will try the oil shield fix and if that fails, they will replace pistons and rings. Seems like a huge waste of time when they know there is a major problem.
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all problems of the 2007 GMC Sierra
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Every 2000 miles the vehicle burned a quart of oil, the dealer stated it was normal.
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all problems of the 2002 GMC Sierra
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Engine burns 3quarts of oil between changes has 21750 miles.
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all problems of the 2000 GMC Sierra
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Internal engine noise, excessive oil consumption.