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Thread: V8 Astro TBI

  1. #46
    Fuel Injected!
    Join Date
    Dec 2015
    Age
    54
    Posts
    46
    I had a question regarding the vss input to the pcm; is the optical pickup on the back of the speedometer the same type signal as the NV3500 VSS? The trans is from a 1992 truck. I'm wondering if I can use the VSS in the trans as the input to the factory Astro speedo buffer in place of the optical sensor or do I need to swap the buffer out for a later model DRAC? I want to make sure the PCM is getting the correct vss signal.
    Last edited by falconvan; 05-11-2017 at 09:41 PM.

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