FWIW
My truck started burning oil at about a yr old, 25-30,000 mi. And yes it was about what the ridiculous GM spec says, 1 quart / 1000 mi.
Was always using cheap oil and filter. After reading you guys argue oil and then talking to my mechanic friend, started on M1 oil and filter, and reduced down to 4000 interval. Never burned oil again. 65,000 mi now.