1998 GMC Sonoma Owner's Manual - Page 240

6. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. r Never use oil or grease on studs or nuts.you If do, the nuts might come loose. Your wheel could fall off, causing a serious accident. 7. Place the spare on the wheel mounting surface. 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 wheel wrench and see your dealer as soon as possible. A CAUTl IN: L Rust or dirt on the wheel, or on the partsto which it is fastened, can make the wheel nuts become loose after a time. The wheel could come off and cause an accident. When change a you wheel, remove any rust or dirt from the places where the wheel attaches to thevehicle. In an emergency, you can use a cloth or a paper towel to do this; but sure to usea scraper orwire be brush later, if you need to, to get all the rust or dirt off. L 5-28