231D or 231HD?  I had my transfer case go to pot and I'm trying to figure
out what to do.  The manual and the dealership say it needs a 231HD.  All
the shops I've talked to and all the websites (that aren't Dodge-sponsored)
say 231D.  Are they the same or what?
It's for a 2000 Dodge 1500 with the 5.2L engine.