IWE stands for Integrated Wheel End. Basically it's the system that locks and unlocks the front hubs on all 4x4's, it consists of vacumm operated hubs and a control solenoid with check valves inline. When the vac is weak, the hubs try to self engage and you get the clicking sound. The most common cause of failure is a bad solenoid valve, the o-rings inside start to leak creating a weak vac signal.

They could have messed it up, but I doubt it, it's more likely a coincidence.

 

Dealer called... It was the passenger side exhaust flange where the Y-Pipe meets the manifold. And the trans fluid I saw on the under body was just blow back from the problem! NO LEAKS!! No more trans issues!! For now....

Thanks everyone for your help! And I hope in the mean time this was helpful to the rest of you...

HAPPY WEEKEND!!