"transmission fluid leaking from fitting below radiator cap after replacing radiator on 99 surburban
Probably your radiator fluid leaking out.
It is probably Radiator fluid that's leaking. if you have red radiator fluid. it looks purple when it heats up. I had this from my Toyota Sequoia when the leak went over the hot engine.
if you have an automatic transmission there should be cooling lines going to the radiator to cool the transmission fluid the lines could be leaking or the tank could be leaking
Antifreeze is green in color and is leaking from your radiator .
put radiator sealer in it or crack an egg in it
Green fluid leaking from a car is radiator fluid. "A professional certified mechanic can handle the repair or maintenance needed to fix this issue."
You will notice two lines going to your radiator from the transmission. One is a service line and one is a return line. The radiator has a transmission cooler built into it. If you have trans fluid in the radiator chances are the trans cooler is leaking. A little trans fluid in the radiator will not affect engine cooling BUT as soon as the pressure drops in that transmission you may very well have radiator coolant sucked into the tranmission and that will ruin a transmission in a hurry. You need to get this checked out as soon as possible.
loose/cracked radiatior hoses
You have a leaking transmission cooler, usually part of the radiator. The transmission fluid is mixing with the antifreeze turning it pink.
bad radiator cap
Find where the fluid is coming out and repair/replace it.
looks like a sensor or thermostat going into engine block
It is an engine cooling fan that cools the fluid as it passes through the radiator.
the trans fluid on a auto trans goes through a tube in the radiator to cool the fluid if the tube has holes in it, it will leak trans fluid in to radiator. you need to replace radiator or have rebuilt.or you could put on a aux trans cooler and put plugs where the trans lines used to go.
The transmission cooler is built into the radiator, and the tubes on the cooler are leaking Trans. fluid into the engine coolant. Need to replace radiator.
leaking head gasket or improper fluid in cooling system
check your radiator hoses and change gaskets
your heater core is probably gone
It could be the radiator, hoses, fuel pump or an engine gasket. All of those components just "give out" with time.
If it is leaking trans fluid into the coolant it can cause overheating.
You have transmission fluid lines that go to the radiator/front for cooling you must have a leak there
Heater core would be the likely culprit here.
easiest way is to fill radiator and look and see where fluid is coming out, but Im sure you thought of that. The best way is to plug the ends of the radiator up with some type of rubber stopper then insert blow air through the drainport while holding it under water. Wherever the bubbles are coming from is where its leaking.
no the red clay like stuff is transmission fluid in your radiator probably leaking from your transcooler