Quote:
Originally Posted by Dmax21
the computer was for the 5.3 dbc and it did originally have a 4l60 but was no good so i swapped it too a 4l80e, I had a stand alone harness built for the engine with the 4l80 transmission as far as tuning goes it was done by a local guy that did a base tune and he said he set it up for the 4l80, i know nothing about tuning so i'm just going by what he said.
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If you've tried flipping the round trans connector 180 degrees and its still not working right the wiring and tune need to be checked out. The 4l80e defaults to 2nd gear in limp mode.