Where is the orifice tube located on 2002 envoy?

On a 2002 GMC Envoy, the orifice tube is located in the air conditioning system, specifically within the liquid line. To access it, you'll need to trace the line from the condenser to the evaporator. The orifice tube is typically situated near the evaporator, often inside the vehicle's firewall area. It's best to consult a repair manual or guide for detailed instructions on locating and replacing it.