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ducktape11

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  1. ducktape11's post in 1689 with HVAC was marked as the answer   
    Welp the truck is fixed.....

    I reinstalled the noise filter and it fixed the TCC lockup and the HVAC CCD issue. I also soldered the trans wire the DTT voltage regulator wire was tapped into... Both these wires were just wrapped together instead of properly soldered. Do I think the filter fixed it? No. It was that the wires were not properly put together.

    My guess is that the readings were getting skewed to the PCM and that was somehow messing with the CCD bus.