I did find the one in the TIPM and swapped it last night with another of the same part number with no change.
The high speed must be the one that I am not finding. The replacement part I purchased is fairly large and has what appear to be cooling pins on it. http://www.autozone.com/autozone/par...er=419969_0_0_
It should be easy to find (unless I was sold the incorrect part--though a couple of sites came up with same part). I can't seem to locate it near the fan assembly on the driver's side. There is a relay in that area (56007078) but none of the parts sites appear to indicate that as related to the fan.