Ls swap

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So I rest the control module for the transmission after I hooked up the new wiring from the stand alone harness and now it shifts perfect so I eliminated the old harness thanks for the help.
 
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Quick question on the fuel pump it is still hooked up to the factory harness will this make a deference on running I’m not sure where to hook it up to the new computer it runs but I noticed it runs none stop once I turn the key on even if it’s not started not sure if it’s suppose to thanks for any info.
 

0xDEADBEEF

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There's a pin from the fuse box that goes to the original PCM, you need to swap that to the new PCM. You can get the locations off LT1swap.com
 
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Quick question on the sifting it is shifting early when you step on it not going but to 3500 to 4000 rpm’s is this something I need to have tuned in the computer or is there something else that would be causing this problem
 
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