First, is this a PCV (positive crankcase ventilation) valve tube on the 2002 Chevrolet Impala?
It is hard, non-flexible plastic with hard rubbery grommet-like inserts on the ends, with one side going into the air intake just before the throttle body, and the other inserting into a metal casing on the back of the engine.
Ours broke in the middle while removing to change the coolant thermostat, which is below the throttle body.
Below are some pictures found on the internet, in which I indicate the relevant tube in red:
It appears similar to GM part #24508188 :
For now the car has been running without the tube, but I imagine that isn't great for fuel economy, emissions, etc.
How could this be repaired cheaply?
Would duct tape be ok? I'm not sure what temperatures and pressures this part has to endure, but given that it's plastic, and the ends are just pressure-fitted with no securing mechanism, I'm guessing neither gets very high.
Or what about squeezing a piece of fuel line hose over both broken ends of the tube and possibly securing with clamps if necessary?
Or other ideas?
Short of searching for a replacement in a junk yard, I'm not sure it's worth buying another one. The shipping on a replacement ends up being (far) more expensive than the part itself.