Engine Burning Oil problems of the 2011 Chevrolet Avalanche

At 40000 we noticed we were having issues with my Avalanche burning oil, when we asked the tech at chevy he told me that was normal for the newer engines to burn oil, at 130,000 mile we started having problem with a spark plug fouling out, I read that this was directly related to the oil consumption problem. At 181,000 mile and only four years old we had to replace the engine after replacing the spark plug and wire 3 times this cost us $6847. I have read this is a constant problem with the 5. 3 engines and could cause4 major accidents if the end up on a highway when they finally go out.