Where do you look for rear heater return hose on radiator in Chevy astrovan?

In a Chevy Astrovan, the rear heater return hose connects to the radiator near the lower portion of the tank. Typically, you can find it on the passenger side of the radiator, where the hose runs from the rear heater core back to the cooling system. Ensure the engine is cool before inspecting to avoid burns, and you may need to remove any underbody shields or covers for better access.