JeepJeepster
Full Access Member
45RFE KJs are the only ones with a separate TCM and ECM.
42RLE (03+) all have a PCM (powertrain control module)
For a short period the 2003 libertys with the 42rle had separate computers for the ****** and engine. Someone posted pics of their engine bay and ******. They were confused since they had two computers but also had the 42rle ******.