I just bought a 2002 Ram and am wondering what Jeep TCMs will work to change from 45re to a 545re programming. I have researched for a few weeks and have found conflicting information on which TCMs can be used. 2001 TCM with "AG" as the last digits of the code was said to be the only one that will work. Then I was told that ANY 2001 or 2002 Jeep GC with a 4.7l engine TCM will work and that the 2002 already came with the 545re program and that the 2001 Jeep GC has to be flashed at the dealer. Any help would be appreciated, I don't want to throw money at "maybe" parts. Thanks.

Here's the only link I have for the swap, the guys at a local speed shop told me that any of the TCMs will work. But I don't know these guys all that well, at least not well enough to drop $100 on a chance they might be right or to let them work on my truck.

http://www.*********.com/forums/showthread.php?t=208132

 

As far as I know, 02 4.7 Rams were strictly the 45RFE programming. From what I have read, it has to be a specific part number TCM. Not sure what site your link is, but I seem to remember a pretty good write up about it on here.