Stupid 4l80e question
(i know that the 1500 trucks have 4l60s)
IIRC, TCMs came out somewhere around 2004/2006.
However, to swap from a 4L60E setup to a 4L80E requires changes to the harness and PCM. These detailed threads explain all:
https://ls1tech.com/forums/automatic...-required.html
https://ls1tech.com/forums/automatic...l80e-swap.html





