Originally Posted by
04colyZQ8
Yeah, I have told Karlen I can prob get his gauges to work, I even sent him a hacked file to try and flash to the LS1B PCM. That might get the gauges to work. But he didn't try it?
You most likely cannot have two pcms, on the serial data bus, its not Can bus, its GM serial data. You will have all sorts of errors doing that! You can disconnect the LS1B PCM, and use the P12 for gauges only, you will need to wire the abs to the P12, as well. And you will need the old I5 crank reluctor welded to the balancer, with a crank sensor, for the tach to work.
Or you could just reflash the LS1B PCM with the hacked file and see if that works. You'd need to move the sending unit ground and wire over to it as well.
also any ABS code will need to be cleared with a tech 2, or Actran abs scanner, MT2500, etc.. they are latching codes, ounce, set they will not clear, even after disconnecting the battery