2003 denali electric fan's

[ericguy320]

I have a 2003 seirra denali that I have installed 05+ c-k truck electric fans and harness. I used my diablo sport to turn on high and low with the coolant temp but I am still not able to get them to come on with ac pressure. Is there anything this software can do for me to turn this function on?

[EC_Tune]

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