1998 Chevrolet Astro Owner's Manual - Page 254

9. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. II A CAUTION: Never use oil or grease on studs nuts. If you or do, the nuts might come loose. Your wheel could fall off, causing a serious accident. 10. Put on the spare tire. Put the nuts on by hand. Make sure the cone-shaped end is toward the wheel. Tighten each nut by hand until the wheel is held against the hub. If a nut can't be turned by hand, use the extension and see your dealer as soon as possible. Rust or dirton the wheel, o r on the parts to which it is fastened, can make the wheel nuts become loose after a time. The wheel could come off and cause an accident. When you change a wheel, remove any rust dirt from the places or where thewheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to to do this; but be sure use a scraper or wire brush later, if you need to, to get all the rust or dirt off. L 5-32