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New member, TCM issues Please HELP

13976 Views 11 Replies 7 Participants Last post by  Benibiker
About a month ago my wife's 2006 Grand Cherokee Laredo v6, 3.7L, RWD decided to go haywire. It will not shift out of 1st gear (limp mode) even after several restarts. Check engine light, ESP/BAS, and Traction Control lights are all on. Dealership checked it out and said that it needed a new TCM. I was told that the TCM was part of the PCM in my model and year. Bought new PCM (programmed and updated) and installed it, still same exact problems as above. The two codes it is spitting out are p0605 and u0101. Guess my first question would be is the TCM and PCM the same part for my make and model (I've heard yes and no) and does anybody have any other suggestions? Any help is greatly appreciated. Thanks
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Not familiar with the WK, but some googling learned that your model has a separate TCM.
The codes you have mean: P0605 = internal control module ROM and U0101 = lost communication with TCM.
So it seems that indeed the TCM is toast.
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