I have had a cam installed and now my low side fans dont work.
New relays
New temp sender
No blown fuses
Fans tested and work
Hi side works fine

Was told when it was tuned that that nothing was changed on the fans so that couldnt be the issue.

IDK what else to do now.

Sorry if this has been posted already, searched and didnt see it. TIA

 

I know this sounds silly, but make sure both fan plugs are plugged in. The fans have to come out to change a cam.

 

Checked the connection. I put a computer on it and tell the hi side to come one and it does. The low side clicks and nothing happens. If I hook them up direct to power they both come on.

 

check the wire from the relay to the fan on the low side. sounds like there's no connection if the relay is pulling in and the fan isn't kicking in

 

Had a mechanic look at it. Said he wasn't getting power to the relay. Just heard a click. Idk electrical that we'll so I don't know where else to look for the issue. I had a blown fuse on the BCM (body control module) that I found yesterday. Don't know if that's related or not.

 

Check to make sure that no wires are frayed and shorting out in the harness behind the glove box.

 

I checked that as well. Previous owner had already taped the harness ans metal areas. I did not pull the tape off to recheck.

 

May not be helpful but when I bought my gto I had same issue. Problem i found with my hp tuners was someone had messed with the thresholds for on and off temps and with the ac settings as well. Adjusted those and now ice cold ac in 90* weather never going over 190*

 

if you command the low fan to turn on and it doesn't, but direct power
DOES make it come on, then it's some sort of relay / wiring issue.

if it was a bad fan motor, then it wouldn't come on at all.