Im hearing a noise from the radiator fan when the AC is on. However if the fan comes on the cool the engine Im not hearing the noise. Any ideas?

 

one of the fan comes on when you use the a/c

 

Both fans are on when the a/c is running. Thats when Im hearing the scrubbing/rattling sound. Im starting to think its the fan motor. The sounds usually goes away if I accelerate and comes back when Im stopping or idle.

 

I'm bringing this back up...I'm experiencing the same on my LS4 ('98)...I hear the noise coming from the vent..goes away when I accelerate/ noise comes back when stop. Weird part...i parked the car noise goes away..put it on drive (not yet moving) noise comes back...any ideas where I should look?

 

anyone? trying to see if it is the fan clutch or the fan bearing bracket....hoping that it is just the fan clutch as it is easy to change