5.3 and 4l80e wiring question


Sep 13, 2014
Quick question this is probably a stupid question I bought and I’m building a lm7 2001 5.3 and adding a tbss intake drive by wire conversion , I am buying a 4l80e but what year should I get the transmission in order for everything to work . Ps. I haven’t bought a engine harness or transmission harness what will I need for all this . I’m sorry if it sounds stupid
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Comic Book Super Hero
Jun 15, 2012
Florida Beach
The easy way would be to get a factory 6.0l LQ4 Computer and Harness from one that is late 2003-early 2007. Blue & Green connectors on the PCM connectors. Then have it tuned for the 5.3l setup.

That is the easy way, I've done it and as a tuner, I've also tuned it.

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