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many questions for a impco bifuel set up

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  • many questions for a impco bifuel set up

    HI I recently bought a new to me 2013 silverado with a cng kit in it. It was originally a state vehicle so I'm reasonably certain it was done properly. when running on Gasoline i get no check engine codes when I switch to cng i get several codes that look related to the fuel computer. Problem is I can't seem to locate said computer. Any ideas? Is not near the other 2 computers for the truck nor is it under the spare tire where the original fuel pump control module is? would it be inside the bolted together box where the tank is? any help would be appreciated!

  • #2
    Is it right next to the extra battery tray on drivers side, closest to the fender

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    • #3
      Maybe you assume there is a separate computer for the CNG fuel system? Based on your symptoms, I would say not.

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      • #4
        Thanks you csu ram. I saw that and yes based on a conversation with a cng conversion shop i was looking for a seperate computer.

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