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Re: What to do for 5.3L harness and ecu
My harness was from fuelinjectionconnection
I think that SHOULD be enough info, since your running a cable throttle body (or the car-tb if you switch to the ls6 intake) you don't need to bother with the DBW problems.
Put up pictures of the engine...is the fuel rail plastic or metal, does it have 2 inlets?
Most likely if you can find a 00-03 computer from a v8/automatic truck, it should work....BUT DO NOT buy one until we can see some pics and try to verify the year range on the engine. I hate wasting money.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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