The `99 Suburban has a leak at the right rear area. I could see coolant at the last bolt of the lower intake manifold. I swapped the gasket yesterday and was pretty sure that I nailed the issue after seeing the condition of the gasket. It has 200k on the clock. Not sure if it was done before.

After getting it all back together, it still leaks. Same area same amount ... it really pours out back there. I can't see exactly where but tracing it up, it seems to be right above and behind the starter solenoid. Does this sound like a head gasket, possible freeze plug?

 

It would appear that whatever I was seeing yesterday is probably from the slight leak that the intake manifold had before . It is pouring out at the rear where the block meets the bell housing.

I vote freeze plug(s) at the very rear of the block.