Hey all, this summer my transmission went out and no longer moves in drive, reverse, or anything (not sure what went out in it). Now, I need to get it running so I am looking for a replacement but it doesn't seem to be very easy to find for the 2004. I am told by a local salvage yard that the 2004 was a 'one year transmission'. Does anyone know why the 2005, 2006 and such transmissions won't work on my 2004? They seem to be much more available and also much cheaper than the 2004's. I'd appreciate any input or explanation which would help to get my truck back up and running!!