2002 LM7/4L65E Swap limp mode

[Ole Greenie]

Originally Posted by BR3W CITY

When you had the original setup done, was the computer programmed knowing you'd be running the 700r4? If so, then they probably setup the ECM like a manual, which is what I think Clyde was getting at. In that circumstance, you need the computer reflashed for the automatic trans you'll be using (4l60/65/70 or 4l80e). This is how it knows which config to use for things like ISS/VSS input, NSS, range selector input. etc.

4l65e hooks up just like the 60e, just has 5 planetaries in the case.

This was exactly the case! Trans was turned off in the PCM! Thanks brother!