Which heater hose that comes from the firewall goes to the water pump.The top outlet or the bottom outlet?

Asked by Oct 15, 2015 at 12:43 AM about the 2006 Chevrolet Impala

Question type: Maintenance & Repair

There R 2 outlets for the heater hoses coming out of the firewall.
1 outlet on top & 1 outlet below the top one.
Which one goes to the block?

Thanks for your answer

4 Answers

815

If they are not labeled INFLOW / OUTFLOW. It doesn't matter. You have a pass thru core.

2 of 2 people found this helpful.

AgeeKustoms is correct. One hose is supply and the other is return. If you can see a valve on one of the hoses, that is supply to heater core.

2 of 2 people found this helpful.

https://www.youtube.com/watch?v=fvsqbHP0DbY

3 of 3 people found this helpful.

https://www.youtube.com/watch?v=fvsqbHP0DbY This has nothing to do with heater hoses!? R U OK?

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