first,i have hot wired the fan and it does work.i have also changed the coolant resister to the newer version.fuses and relays in the box under the hood are fine.i have put the stock tune back in and two other tunes by differant venders just to make sure the tunes didnt mess anything up.still want run.according to what i read the only thing left is thr engine temp swicth in the head under the intake.if i change that and it still doesn work what else is there to tyr or look for?and running max air doesnt work either.

 

Temp sensor or relay.

 

By pass the module on the fan shroud... there known for going out. Check for voltage on the ninout onto the module. Then verify voltage coming out. No voltage then u need anew module.. there only 40 bucks I believe