2002 GMC Envoy Owner's Manual - Page 312

NOTICE: Improperly tightened wheel nuts can lead to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque specification. CAUTION: The underbody-mounted spare tire or flat road tire needs to be stored with the valve stem pointing up. If the tire is stored with its valve stem pointing downward, its secondary latch won't work properly, and the spare tire or flat road tire could loosen and suddenly fall from your vehicle. If this happened when your vehicle was being driven, the tire might contact a person or another vehicle, causing injury and, of course, damage to itself as well. Be sure the underbody-mounted spare or flat road tire is stored with its valve stem pointing up. Storing a Flat or Spare Tire and Tools 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. 5-28