Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
The inlet heater hose does connect to the pipe that runs in the front of the engine area (left side of the engine), goes to the throttle body and to the heater core. below is a diagram of the hose, its the top hose going in to the heater core.
The inlet hose is labeled number 3 below.
Heater Inlet Hose Replacement