2003 GMC Sonoma Owner's Manual - Page 343

Never use oil or grease on studs or nuts. If you do, the nuts might come loose. Your wheel could fall off, causing a serious accident. 1 10. Lower the vehicle by turning the jack handle counterclockwise. Lower the jack completely. 7. Place the spare on the wheel mounting surface. 8. Put the nuts on by hand. Make sure the cone-shaped end is toward the wheel. 9. 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. 5-80