My 00 80,000 mile, V6 LS is exhibiting the symptoms and EC's 171/174. I'm preparing to complete the replacement of the elbow which is likely to be the cause; and I'm looking for some related input/advice.
#1. Has anyone paid for this repair to be completed; and what did it cost?
#2. When performing this repair; what other 'maintenance' actions should be performed while the engine is exposed?
#3. Beside having a new part for the elbow, and intake gaskets; what other parts am I likely to need to have on hand at the time of the repair.
#4. One step in the process is to drain the coolant; what is the best way to do this? Is there a drain tap on the bottom of the radiator? If the objective of this step is to remove the coolant from the top half of the engine; do I need to ensure that the thermostat is open so the engine will drain too?
Thanks everyone.