I just replaced a TCM on my Liberty with a part from the junk yard. No issues whatsoever, no programming required, and works like a charm.
I assume you're asking about a Grand Cherokee? I just know that in a Jeep Liberty it has two diﬀerent PCMs (Powertrain Control Modules) that have been coupled with the PowerTech. The JTEC was the older controller and the NGC is the newer controller. The JTEC PCM had three connectors on it and used a separate TCM(Transmission Control Module), while the NGC has four because it integrates the TCM. 2006-2007 Libertys use a hybrid bus system in which the PCM, gas TCM, and ABM (ABS and ESP) use the CAN Bus and everything else uses the PCI Bus. The BCM (Body Control Module) then acts as a bridge between the PCI Bus and CAN Bus.Can anyone confirm the uk 2008 3.0 crd wk/wh version has a tcm or is it build into pcm.