2010 GMC Savana 2500 Cargo Owner's Manual - Page 354

Secondary Latch System Your vehicle has an underbody-mounted tire hoist assembly equipped with a secondary latch system. It is designed to stop the spare tire from suddenly falling off the vehicle if the cable holding the spare tire is damaged. For the secondary latch to work, the tire must be stowed with the valve stem pointing down. See Storing a Flat or Spare Tire and Tools on page 6-94 for instructions on storing the spare tire correctly. To release the spare tire from the secondary latch: { WARNING: Someone standing too close during the procedure could be injured by the jack. If the spare tire does not slide off the jack completely, make sure no one is behind you or on either side of you as you pull the jack out from under the spare. 1. Check under the vehicle to see if the cable end is visible. If the cable is not visible, start this procedure at Step 6. { WARNING: Before beginning this procedure read all the instructions. Failure to read and follow the instructions could damage the hoist assembly and you and others could get hurt. Read and follow the instructions listed next. 2. Turn the hoist extension counterclockwise until approximately 6 inches (15 cm) of cable is exposed. 6-92