I am running an Efan / Harness from you guys. The truck was tuned by Blackbear. I recently had to change the Blower motor resistor and harness. I also changed the Relays in the fan harness. I am not getting power to either fan without the AC being on??? There is no general cooling fan coming on (when the Tstat opens). Anyone have any ideas? I am stumped.

 

ls1truck.com is there site contact them there.

 

thtanks

 

Has pin 42 been turned on in the PCM to ground at a certain temp? If so, make sure that the pin on the blue wire is pushed all of the way in to the connector, it can be tough to get it in there.

 

I found the problem...it was a so-called "new" relay. Didn't work right out of the box. Put another one in...works fine. thanks for the help.