2008 Hummer H3 Owner's Manual - Page 345

7. Remove all the wheel nuts and take off the flat tire. 8. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. {CAUTION: Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When you change a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See Changing a Flat Tire on page 5-79. {CAUTION: Never use oil or grease on studs or nuts. Because the nuts might come loose. The vehicle's wheel could fall off, causing a crash. 9. Put the spare tire on the mounting surface. 10. Put the wheel nuts back on with the rounded end of the nuts toward the wheel after mounting the spare. 5-87