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Thread: 04 Silverado e-fan swap, fan will not come on for a/c.

  1. #1
    Potential Tuner
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    Mar 2013
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    04 Silverado e-fan swap, fan will not come on for a/c.

    Hey all. just did the e-fan swap on my 04 silverado. grabbed a harness kit from www.ls1fans.com that uses two trigger wires, blue 42 and green 33 for high and low speed fans. the fans work both high and low for the engine, however if the truck is cold and i turn the a/c on, the single fan will not come on. i'm sure it is something on my end for the tuning, if anyone can see anything i'm missing i'd be grateful. thanks in advance.

    -Shaun

  2. #2
    Advanced Tuner Ranger6202's Avatar
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    Oct 2013
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    Wyoming
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    try changing that value to like 30. Let me know if it works.
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  3. #3
    Potential Tuner
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    Mar 2013
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    Thanks Ranger6202. I actually got it working just before you replied. Don't know why I didn't thing about it before, but I just copied a stock 2006 file from the repository.