![]() you can google more info on that specifically on what part numbers work together. first you need an ecu, tcm, pedal that all correlate together. Theres like ten variables in your post that can all create issues. ![]() It is definitely a tune problem, is it the 08 e67 ecm will not work with a 09 5.3L tune? and if the 08 ecm doesnt work do i just need to get a 09 ecm? and or tcm? my goal is to get everything to work like it is factory. my question is what is my tuner doing incorrectly to my 08 e67 ecm? he did a segment swap to ecm from a 09 colorado 5.3L, i don't think he tuned tcm, but to me i think the ecm still thinks its a 4 cylinder. so the next day i took out my stock to truck 08 e67 pcm and tcm and installed a 07 tbss e67 ecm and tcm with stock tune i had laying around, performed a theft learn and now the vehicle runs on all 8 cylinders, oxygen sensors read correctly in the correct location, but tbss does not send out power to s terminal wire to starter so i hooked up a starter button to start engine and tbss also uses a different gas pedal so that will not work. well i spent 4 hours checking everything on my harness and found out my harness is fine. also it keeps setting secondary air injection codes, my 2.9L had air injection. and lastly it thinks that the bank 2 ho2 sensor 1(pre cat) sensor is actually the bank 1 sensor 2(post cat) position on hp tuners and also on my scan tool. Also it never verifies that it is miss firing on bank 2 as well. With the tunes he put in, it doesn't run on the passenger side cylinders, has good spark to passenger side cylinders, has good injector pulse to passenger side cylinders(bank 2) for roughly 1 second with a noid light being bright then barely gets the noid light to even turn dim after the first second. Well after 2 days of frustration and 2 different tunes he put in, it still doesn't operate correctly. i paid a tuner to tune it from the stock 2.9L to a 5.3L. I deleted the afm, changed the 4l60e trans to work, installed a 09 v8 colorado engine harness, and rewired harness to work with the vehicle and trans. i swapped in a 08 LC9 5.3 into my 08 colorado. I need some help with my 08 colorado ls swap.
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