I have a 95 Buick with a 3800. I replace the water pump 6 months ago. Today
it is leaking coolant. At first I thought it was the water pump again but
the leak is coming above the WP. I did a quick look as it is getting dark
and it appears to be a short tube that has a 90 degree bend in it. This
looks like the old by pass hose for the t stat but it appears to be steel
not a hose. Any ideas what could be leaking?

TIA