Where is the Air conditioner drain line located on a 2002 Chevrolet Impala?

The A/C drain line on a 2002 Chevrolet Impala is located inside the passenger compartment, behind the glove box. You'll likely need to remove or partially remove the glove box to access it. It's a small hose that drains condensation from the evaporator coil. Be aware that it might be difficult to locate and access without some disassembly.