Update from one of my previous posts.
My brothers 2010 5.3L CC Silverado just had a bunch of engine parts replaced due to oil consumption. His truck has almost 40,000 miles now and is his daily driver. Funny thing is, my two trucks are both tuned with AFM tuned out with no issues. His truck was not tuned and used a shit load of oil in 3,000 miles. Dealership was great about the issue with no questions asked.
Don't hesitate to take your trucks in if you suspect there is an oil consumption issue. GM is taking care of people, warranty or not.
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