I have a 99 DII and the center climate control squeaks every so often, and I have also been noticing that coolant leaks a tiny bit. I believe it seems to be coming from the back passenger side area perhaps. I just had to replace my ypipe because it corroded so I am not sure if that ever had anything to do with it, but after spending a little bit of cash I would like to try and stop this leak pretty cheap.

My oil doesn't look like milkshake, I don't have oil in my coolant, and i'm not getting any misfires or engine codes.

Any ideas?

 

rent/borrow a coolant pressure tester from parts store. Pump up to 15 PSI and let truck sit, say 30 minutes, and look for leak.

 

I see some leakage at the intake manifold where the tubes plug in from the coolant tank..

 

Actually I guess it's the Throttle Body Heater Plate?