So recently my truck has been sucking down coolant. I have been noticing a decent sized puddle under the passenger side of the truck at night after it has been parked. Tonight I found where it is coming from. What is the tube that I marked with a red dot? It was coming out at a pretty decent rate from it. My carpet inside is also dry. Thanks for the help.

is the tube that I marked with a red dot? It was coming out at a pretty decent rate from it. My carpet inside is also dry. Thanks for the help.

What you are seeing is water that has condensed off your A/C. That tube drips water down the inner fender onto the ground. Turn your A/C or defrost off and it will stop dripping. It's just moisture pulled from the atmosphere. If it is coolant dripping onto the ground it isn't coming out of that... it would be leaking out of the Surge Tank overflow.

I would also look at the drivers side front area (might have to remove the splash shield) right beside the lower radiator hose and hope the coolant loss is coming from there... Otherwise it might be something alot more expensive...?

Ya, you're right, I think it is the AC dripping there. I guess I was looking for a quick fix for the coolant loss. Back to the drawing board.