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96 GM 2500 will not run on CNG

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  • 96 GM 2500 will not run on CNG

    I have a 96 Chevy 2500 hybrid and it won't switch over to CNG mode. any ideas how to fix this, Thanks.

  • #2
    Moving post to a new thread .

    More info needed. Is this an aftermarket conversion ? Factory GM Bi Fuel systems default to cng as long as tank pressure is above approx 600 psig and temp is above freezing. What is the ambient temp when you are starting ?