Where is the crank shaft sensor located exactly on an 02 Dodge Grand caravan 3.8

Directly answering your question: The crankshaft sensor is located on the rear of the transmission housing, above the differential housing. I would advise, however, that time and effort is spent to determine what the actual cause of failure is, because it is not likely to be due to a failure of this component.

I agree - evidently this is a very reliable sensor as I have never had to replace one on any of these vehicles over the years .. Some other configurations / models are more susceptible to failure due to physical location and are subjected to a more extreme engine bay atmosphere. *Hands-on* testing - diagnosis is highly recommended!