After purchasing a used 2102 GMC 1500 Extended cab SLT with the 5.3L, with 47K miles. I came across this sight and have been concerned about oil consumption. I have had many GM products over the years and that was one area I never worried about. So far after (2) 5,000 mile oil changes I have not had any oil consumption to date. I average about 1500 miles a month. Mostly highway miles to work and various other road trips. No towing at this time. As in some of the other posts, 5,000 miles for an oil change is enough for this engine. I appreciate the posted info and will update my engine experience as well.