Hi everyone,
I have a ‘99 S10 with an LS1 out of a C5 Vette. Recently, my electric radiator fans stopped working. First I tried just redoing the crimp connection between the fan and the Current Performance wiring harness, and that made it work again for about a week.
A few days ago, it stopped again. I redid the connection again, this time with solder, and it still won’t work. I bench tested the fan with a battery and it worked fine.
Any ideas what could be causing the issue? Any help would be greatly appreciated.

 

Check all other connections including grounds. I'm betting it's something simple.
How are the fans controlled? ECM? Or standalone? Check all that over too.

 

Did you look at the relay for it? My guess is the loose connection may have burnt up the relay.

 

I second this. Good call RP....