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  1. J

    LS Swapped No Communication With ECM

    HP Tuner won't connect to the ecm. I have 12 volt and grounds connected. Pin 2 on DLC connected to Pin 58 in blue ecm connector. Any suggestions?
  2. J

    LS Swap. Need to figure out power for pumps.

    Thanks man, wired up and both pumps running. She runs and sounds angry lol. I can't get any communication with the ECM. I have 12+ and grounds connected. Pin 2 (ppl wire) connected to Pin 58 Blue ECM connector. Any suggestions?
  3. J

    LS Swap. Need to figure out power for pumps.

    So I have one tan/white that comes from the harness that goes to the pumps that goes in the driver side of the bulkhead. I have another that originally came from the pump relay in the passenger side of the bulkhead. And there is also one that y's off from the two wires that go through the fire...
  4. J

    LS Swap. Need to figure out power for pumps.

    I am having trouble seeing which wire/s I need to supply power to run the pumps. Four wires coming from the pumps. Two into the fuse block and two into the fire wall. Anyone know for sure before I start pulling wires and testing? 1987 Chevrolet V30

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