Hi my name is Tee I have a 2004 Chevy suburban I just bought. There was no computer in the truck so…

Hi my name is Tee I have a 2004 Chevy suburban I just bought. There was no computer in the truck so I put a use one in out the same model vehicle. I tried two different computers to start the truck but neither one work it's getting fuel up the line an the fuel pump is working I haven't check the injectors yet it crunk wit a little bit of starter fluid then killed do u have any idea what it could be

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