2004 GMC Yukon Owner's Manual - Page 474

When you reinstall the regular wheel and tire, you must also reinstall the wheel cover with attached plastic nuts, the plastic nut caps or the smooth center cap. Storing a Flat or Spare Tire, Jack and Tools • If you are reinstalling a wheel cover with attached plastic nuts, place it on the wheel and tighten the nuts by hand to get them started. Then tighten the nut caps with the wheel wrench until they are snug. Do not overtighten the nut caps or they may break. {CAUTION: Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. Notice: Storing an aluminum wheel with a flat tire under your vehicle for an extended period of time or with the valve stem pointing up may damage the wheel. Always stow the wheel with the valve stem pointing down and have the wheel/tire repaired as soon as possible. • If you are reinstalling plastic nut caps, tighten the nuts by hand to get them started. Then tighten the nut caps with the wheel wrench until they are snug. Do not overtighten the nut caps or they may break. • If you are reinstalling the smooth center cap, place it on the wheel and tap it into place until it seats flush with the wheel. 5-96