How do you put an orifice tube in a 99 gmc 1500 savanna van?

To replace the orifice tube in a 1999 GMC 1500 Savanna van, first ensure the AC system is fully discharged to avoid refrigerant exposure. Locate the orifice tube, which is typically found in the liquid line between the condenser and the evaporator. Remove the necessary components to access the tube, then use a pair of pliers or a special tool to pull the old orifice tube out. Insert the new orifice tube into the same location, reassemble the components, and recharge the AC system with refrigerant.