That 1 qt per 1000 miles was played on myself on the last vehicle before the KL TH I have now. Had a 2011 GMC Terrain with 2.4L 4 cyl and it was burning oil like a diesel, after an oil consumption test and using 2 qts in 1200 miles, got a new engine at 33K miles. The new engine didn't burn oil at all. So, in conclusion, burning a quart of oil in 1000 miles is bull pockey.
Glad that the KL had a V6 option. GM just went to all 4 cyls, except for full size trucks and SUV's and, I foresee more oil issues for them in the near future along with the rest of the industry both foreign and domestic.
2016 TH, V6, C&C, Tow group, 8.4AN, leather, Cold Weather, Command Sunroof, Black wheels, & Black. Maxcare Unlimited Miles and Years $100 Deductible.