I had a 2007 Tahoe with the AFM. At about 70,000 miles it started going a quart low anywhere from 1500 - 3000 miles after a change. I traded it this summer and it had 122,000 miles on it. I now have a 2017 Silverado and I asked the question about oil consumption and the AFM on the newer vehicles. The response was that no nothing had been fixed, but they had increased the oil capacity so that it shouldn't be a problem between changes.
